JP2003173493A - Signal controller for maintenance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of inconvenience for a maintenance operator such that possibilities in erroneous settings or dangerous settings are not detectable when lighting order and time of a signal controller for maintenance are set at each intersection. <P>SOLUTION: The signal controller comprises a signal control part for generating a display command signal of green, yellow and red lamps, a light opening/closing part for turning on/off power supplies of the green, yellow and red lamps and for outputting a lighting state signal of a turned-on light, a relay part for inputting/ outputting signals to/from the outside, a relay part for maintenance for inputting/ outputting the delay command signal and the lighting state signal from the relay part, a lighting order lighting time storage part for storing lighting order and lighting time obtained from a lighting signal, detection part for abnormal lighting combination which detects a combination of green lamps rejected for lighting at the same time when the lighting state signal is received, signal opening/closing part for maintenance which outputs a display command signal for failure when the abnormal lighting is generated instead of outputting the display command signal according to the stored lighting order and lighting time, and a control switching switch for outputting a signal for stopping the operation of the signal control part with respect to the signal controller. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic signal controller for controlling traffic of an automobile or the like, which enables maintenance of signal control without interrupting traffic control during maintenance. It concerns a controller.

[0002]

2. Description of the Related Art As a conventional maintenance signal controller, as shown in "Traffic Signal Controller (Actual Kohei Hei 4-9680)", a method for maintaining and replacing a signal controller without turning off the signal lamp. Is proposed.

FIG. 4 is a block diagram showing a conventional maintenance signal controller and a maintenance-side signal controller. In the figure,
Reference numeral 81 is a signal control unit for generating display times of blue, yellow, and red lamps, 82 is a display command signal output for each display time determined by the signal control unit 81, and 83 is a display command signal 82 input from the outside. For inputting the display command signal via the relay unit 83, and 85 for inputting the display command signal 84,
A lamp opening / closing section for turning on / off the power supply of the blue, yellow, and red lamps, 86 is a lamp lighting signal turned on / off by the lamp opening / closing section 85, 8 is supplied with the lamp lighting signal 86, and is supplied with blue, yellow, It is a signal lamp that turns off the red lamp.

Reference numeral 87 is a signal controller to be maintained, 91 is a maintenance signal relay section for outputting a display command signal to the relay section 83, and 92 is a maintenance signal relay section.
Is a connection cable between the relay unit 83 and the maintenance signal relay unit 91, 9
Reference numeral 3 is a maintenance signal opening / closing section that generates blue, yellow, and red display times, and 94 is a display command signal output from the maintenance signal opening / closing section 93.

[0005]

In the conventional maintenance signal switching circuit, it is necessary to set the lighting order and lighting time for each intersection, and it is necessary to set manually before use. There is a possibility that you will make settings,
It was inconvenient for maintenance workers, such as being unable to detect dangerous settings.

The present invention has been made to solve the above problems, and a maintenance signal controller is provided with a lighting sequence lighting time storage section and an abnormal lighting combination detecting section so that anyone can use the maintenance signal controller. It is intended to be used easily.

[0007]

A maintenance signal controller according to a first aspect of the present invention includes a signal controller for generating display times of blue, yellow, and red lamps and outputting them as a display command signal, and a signal input from the outside. With a relay section that outputs, and input the display command signal blue,
A lamp opening / closing section for turning on / off the power supply of the yellow and red lamps and outputting a lighting state signal of the lamp which is on to the relay section is provided.

Further, the maintenance signal relay unit connected to the relay unit and the display command signal are input from the maintenance signal relay unit, the lighting order and lighting time of the lamps are stored, and the stored contents are lit in the lighting order. The lighting order lighting time storage unit that outputs as a time signal and the lighting state signal that has passed through the maintenance signal relay unit are input, and a combination of blue lamps that cannot be turned on at the same time, which is determined for each intersection, is detected and detected. After that, an abnormal lighting combination detection section that outputs a display command signal at the time of failure to blink the yellow lamp and the red lamp, and the lighting time lighting time signal is input, and if there is no failure display command signal, the stored lamp The display command signal for maintenance is output according to the lighting order of the units and the stored lighting time, and the yellow display lamp and the red lamp are blinked when there is the above-mentioned display signal for failure display. A maintenance signal switching unit that outputs, is provided with a control selector switch for instructing the signal controller to control the lighting unit switching unit using the maintenance time display command signal.

The maintenance signal controller of the second invention is provided with a push button for manual operation for the operator to determine the lighting time of the display command signal during maintenance.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 is a configuration diagram showing a first embodiment of the present invention. In the figure, 1 is a signal control unit that generates display times of blue, yellow, and red lamps,
Reference numeral 2 is a display command signal output at each display time determined by the signal control unit 1, 3 is a relay unit for inputting and outputting signals to and from the outside,
Reference numeral 4 is a display command signal that has passed through the relay section 3, and 5 is the display command signal 4 that is input to turn on / off the power supplies of the blue, yellow, and red lamps, and output the signal of the lamp that is on to the relay section 3. The lighting device opening / closing part, 6 is a lighting device lighting state signal output from the lighting device opening / closing part 5, 7 is a lighting device lighting signal which is turned on / off in the lighting device opening / closing part 5, and 8 is supplied with the lighting device lighting signal 7. Signal lamps for turning off the blue, yellow, and red lamps, 9 is a command to stop the operation of the signal controller 1 output from the relay unit 3 by a signal from the outside, 1
Reference numeral 0 is a signal controller to be maintained which requires replacement of the signal controller 1 due to a failure or the like.

Reference numeral 21 denotes operating state information including the display command signal 4 of the signal controller 1 output from the relay section 3 and the lamp lighting state signal of the lamp opening / closing section 5, and 22 transmits / receives signals to / from the relay section 3. Maintenance signal relay unit, 23 is a display command signal output via the maintenance signal relay unit 22, and 24 is a display command signal 2
3 is input and the lighting order lighting time storage unit that stores the lighting order and lighting time of the lamps, and 25 is the lighting order lighting time storage unit 2
Lighting signal of lighting order of signal lamps output from 4
0 is a lamp lighting state signal via the maintenance signal relay unit 22,
31 inputs the lighting device lighting state signal, detects a combination of blue lighting devices that are determined at each intersection and must not be lit at the same time,
After the detection, the abnormal lighting combination detecting unit 31 outputs a command to blink the yellow lamp and the red lamp, and 32 is a failure time display command signal output from the abnormal lighting combination detecting unit 31.

37 receives the lighting order lighting time signal 25, and when there is no failure display command signal 32, the display time is generated according to the stored lighting order of the lamps and the stored lighting time. When there is a signal 32, a maintenance signal opening / closing section for blinking the yellow lamp and the red lamp, 38 is a maintenance time display command signal output from the maintenance signal opening / closing section 37, 40 is a maintenance time display command signal 38 A control changeover switch for instructing to control the lamp opening / closing portion, 41 is a control changeover signal output from the control changeover switch 40, 45
Is a maintenance control signal including the maintenance display command signal 38 and the control switching signal 41, and 47 is a maintenance signal controller that controls the signal lamp 8 instead of the signal controller 10.

FIG. 2 is a diagram showing a situation of an example of the invention of the first embodiment. Reference numeral 50 is an intersection controlled by a signal controller to be maintained, 10 is a signal controller to be maintained, 1 is a signal controller of the signal controller 10, 8 is a signal lamp controlled by the signal controller 10, and 51 is a signal lamp. Is a vehicle passing through the intersection 50, 52 is a maintenance worker who is working by opening the door of the signal controller 10, 47 is a signal controller for maintenance that has been transported for maintenance work, and 53 is a signal for maintenance. It is a connection cable that connects 47 and the signal controller 10.

In FIG. 2, the signal controller 10 to be maintained.
It is assumed that a failure occurs and the signal control unit 1, which is an internal component, needs to be replaced. In the conventional maintenance signal controller, the maintenance worker 52 confirms the setting of the signal controller 10 to be maintained, and in the conventional maintenance signal controller, turns on the signal lamps 8.
It was necessary to set the lighting time.

In the maintenance signal controller 47 according to the present invention,
The connection cable 53 is connected, and the lighting sequence and lighting time are stored in the maintenance signal controller 47 for one cycle from blue to the next blue. After the storage is completed, the maintenance worker 52 switches to control of the maintenance signal controller by the control changeover switch 40.
The maintenance signal controller 47 outputs the maintenance control signal 45 via the connection cable 53 to control the signal lamp 8. At this time, the operation stop command 9 is input to the signal control unit 1 to stop the operation. During this period, the work of replacing the signal control unit 1 in which a failure has occurred is carried out. During this work, the vehicle 51 can pass through the intersection 50 as in the normal operation of the signal controller 10.

After the replacement, the signal controller 1 of the signal controller 10 is stopped, for example, in a state where the red lamp is lit in all directions. The maintenance worker 52 switches the control changeover switch 40 to the control of the signal controller when the maintenance signal controller 47 is in a state where the red lamp is lit in all directions. The signal controller 1 of the signal controller 10 starts the operation from the lighting state that is stopped because the operation stop command 9 is released.
As a result, the lighting state of the signal light device 8 is not disturbed,
Control can be switched safely.

Conventionally, the maintenance worker 52 had to set the lighting sequence and lighting time of the signal lamps 8 in the maintenance signal controller. If this setting is incorrect, the signal lamp 8 may not operate normally, and there is a risk that an accident will occur. According to the embodiment of FIG. 2, the maintenance worker 52 operates the control changeover switch 40 of the maintenance signal controller 47 to connect the connection cable 53 to the signal controller 10 and the maintenance signal controller 4.
The signal lamp 8 can be controlled without any artificial setting error by simply connecting between the signal lamps 7.

Further, according to this embodiment, during maintenance work using the maintenance signal controller, due to an operator's mistake or the like, the blue signal lights simultaneously turn on in the intersecting direction at the same time. By detecting and blinking yellow and red, the effect of preventing the occurrence of a serious accident can be obtained.

Embodiment 2. FIG. 3 is a configuration diagram showing a second embodiment of the invention. In the figure, the same or corresponding parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. Reference numeral 60 is a manual operation push button for the operator to determine the lighting time, 61 is a display change command signal for shifting to the next lighting pattern output from the manual operation push button 60, and 62 is a lighting order lighting time. This is a maintenance signal opening / closing unit that generates a display time according to the lighting order of the lamps stored by inputting the signal 25 and the display change command signal 56 input by the operator.

In the second embodiment, when the worker pushes down the manual operation push button 60 once, the display change command signal 61 is input to the maintenance signal opening / closing section 62, for example, from a blue lamp to a yellow lamp. A display command signal 38 for shifting is output.

According to this embodiment, when traffic conditions such as traffic congestion change during maintenance work, it is possible to safely change the lighting time of the signal lamp by manually judging the traffic conditions. Obtainable.

[0022]

According to the maintenance signal controller of the first aspect of the present invention, it is possible to obtain the effect of controlling the signal lamp and maintaining the signal controller without making an artificial setting error. Furthermore, it is possible to obtain the effect of preventing the occurrence of an abnormal state in which the blue lights of the signal lamps are simultaneously turned on in the intersecting direction.

According to the maintenance signal controller of the second aspect of the present invention, it is possible to obtain the effect of safely switching the signal lamp depending on the judgment of the traffic condition of the person.

[0024]

[Brief description of drawings]

FIG. 1 is a configuration diagram of a maintenance signal controller according to a first embodiment of the present invention.

FIG. 2 is an example of a maintenance signal controller according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a maintenance signal controller according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional maintenance signal controller.

[Explanation of symbols]

1 signal control unit, 2 display command signal, 3 relay unit,
4 lamp lighting signal, 5 lamp opening / closing part, 6 lamp lighting status signal, 7 lamp lighting signal, 8 signal lamp, 9
Operation stop command, 10 Signal controller to be maintained, 21
Operation status information, 22 Maintenance signal relay section, 23 Display command signal, 24 Lighting order lighting time storage section, 25 Lighting order lighting time signal, 30 Lamp lighting status signal, 31
Abnormal lighting combination detection 32 Failure display command signal, 37 Maintenance signal switch,
38 Display command signal for maintenance, 40 Control changeover switch,
41 control switching signal 45 maintenance control signal, 47 maintenance signal controller 50 intersection, 51 vehicle, 52 maintenance worker,
53 connection cable 60 push button for manual operation, 61 display change command signal, 62 maintenance signal opening / closing section for manual operation, 81 signal control section, 82 display command signal, 83 relay connector, 84 display command signal, 85 lamp opening / closing Element group,
86 Lamp lighting signal 91 Maintenance connector, 92 Connection cable, 93
Signal opening / closing section for maintenance, 94 display command signal

Claims (2)

[Claims] 1. A signal control unit for generating display times of blue, yellow, and red lamps and outputting them as display command signals, a relay unit for inputting and outputting signals to and from the outside, and a blue circuit for inputting the display command signals. , A lamp opening / closing section that turns on / off the power supply of the yellow / red lamps and outputs a lighting state signal of the lamps that are on to the relay section, and turns on the blue / yellow / red lamps. The signal controller for controlling the signal lamp, the maintenance signal relay unit connected to the relay unit, the display command signal is input from the relay unit, the lighting order and lighting time of the lamp unit are stored, and the stored contents Is output as a lighting order lighting time signal, and the lighting status signal that has passed through the maintenance signal relay section and the lighting order lighting time storage section are input, and a combination of blue lamps that must be turned on at the same time determined for each intersection is detected. After detection, the yellow lamp and red lamp An abnormal lighting combination detection unit that outputs a display command signal at the time of failure to blink the lamp, and the lighting order lighting time signal is input. If there is no failure display command signal, the lighting order and the stored lighting order of the stored lamps are stored. A maintenance signal opening / closing unit that outputs a maintenance display command signal according to the lighting time, and outputs a maintenance display command signal that causes the yellow lamp and the red lamp to blink when there is the failure display command signal, and A signal controller for maintenance, comprising: a control changeover switch for instructing the signal controller to control the lamp opening / closing section using a maintenance display command signal. 2. The maintenance signal controller according to claim 1, further comprising a push button for manual operation for a worker to determine a lighting time of the maintenance display command signal.