JPH09153192A - Traffic signal controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply prepare plural traffic control patterns from one reference traffic control pattern. SOLUTION: When a walker sense signal is outputted from a walker pushbutton 3 and a vehicle sense signal is outputted from a vehicle sensor 4, a CPU 5 stores both the sense signals in a buffer memory 7, and when one or both of the sense signals have been stored or are stored in the memory 7, outputs a stepping command signal for stepping forward from a prescribed step to a succeeding step in the steps of a previously set reference traffic control pattern or a skip command signal for skipping operation to a specified step in accordance with the passage time of a main road side, a walker side, or an intersect road side which is stored in a program memory 6. Thereby a lamp control circuit 8 reads out a lamp display pattern corresponding to the step number specified by the stepping command signal or the skip command signal from a lamp display pattern storing part 1 and displays signal lamps 21 to 2e by lamp colors, flashing or the like corresponding to the lamp display pattern.

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 at intersections such as roads.

[0002]

2. Description of the Related Art Conventionally, a traffic signal controller has a plurality of roads and crossings based on a traffic control pattern in which lighting device display patterns such as lighting color and blinking of each signal lighting device preset for each level are switched according to time. There is a traffic control method at intersections by giving time-divided traffic rights to sidewalks, but one traffic control pattern cannot always cope with changes in traffic on multiple roads and pedestrian crossings.

Therefore, a vehicle, a pedestrian, etc. detected by a vehicle sensor, a pedestrian push button, etc. from among a plurality of traffic control patterns preset to cope with changes in traffic of the vehicle, pedestrian, etc. A multi-lamp display recall that controls traffic at intersections by selecting a traffic control pattern that suits the presence or absence of traffic lights and then sequentially switching the display of each signal light according to the lamp display pattern for each level of the selected traffic control pattern Some have functions.

[0004]

By the way, in order to create a traffic control pattern, it is necessary to set the lamp display patterns such as the color and blinking of each signal lamp for each tier in order of the tier. In the case of a traffic signal controller having a traffic sign display recall function, this traffic control pattern must be created for all of a plurality of traffic control patterns, so there is a problem that it takes time to create the traffic control pattern. It was

[0005]

In order to solve such a problem, the present invention detects a preset ladder of one basic traffic control pattern by a vehicle sensor, a pedestrian push button, or the like. A plurality of traffic control patterns can be easily created from one basic traffic control pattern by instructing whether to advance one step or skip a plurality of steps depending on the presence or absence of vehicles, pedestrians, etc. As a result, it will be easy to create traffic control patterns.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a basic configuration of a traffic signal controller according to the present invention, in which 1 is a basic lamp display for switching a lamp display pattern such as a color and blinking of each signal lamp preset for each level according to time. A lamp display pattern storage unit that stores a pattern. In the lamp display pattern storage unit 1, for example, a main road, an intersection road that intersects the main road, a main road, or a main road and an intersection road are crossed. at the intersection comprising a sidewalk, the main road side signal lamp device 2 ₁ is displayed on to 2 _a of to give right of way to the main road side revised ~, revised ~
In pedestrian is displayed in the signal lamp device 2 _b to 2 _c of the pedestrian to give right of way, the signal lamp device 2 _d to 2 _e of the cross road side to give right of way at the crossroad side revised ~ Basic lamp display patterns such as the ladder diagram of FIG. 2 to be displayed are set in order of the ladder number. It should be noted that one embodiment of the present invention will be described based on the ladder diagram of FIG.

A pedestrian push button 3 is installed near the sidewalk, and when the pedestrian pushes the pedestrian push button 3, a pedestrian sensing signal is output. Reference numeral 4 denotes a vehicle detector installed on the intersection road. When the vehicle detector 4 detects a vehicle traveling on the intersection road, it outputs a vehicle detection signal.

Reference numeral 5 denotes a microprocessor (hereinafter referred to as "CPU") to which a pedestrian push button 3, a vehicle detector 4, a program memory 6 and a buffer memory 7 are connected. When a person detection signal is output or a vehicle detection signal is output from the vehicle detector 4, the pedestrian detection signal or the vehicle detection signal is stored in the buffer memory 7, and one of the pedestrian detection signal or the vehicle detection signal or When both are stored in the buffer memory 7 or stored, whether a step command signal for advancing one step to the next level or a skip command signal for skipping to a specified level is also determined. A step instruction signal for advancing one step to the next step on a step other than the step is stored in the program memory 6 as the main road side traffic time and the pedestrian traffic. To output time or in accordance with the cross road side traffic time.

When the step command signal or the skip command signal is output from the CPU 5, the lamp display pattern storage unit 1 displays the lamp display pattern of the tier number designated by the step command signal or the skip command signal. Read
Signal lamp device 2 ₁ to 2 _e lamp corresponding to the lamp device display pattern color, a lighting control circuitry for displaying in blinking.

The operation of the traffic signal controller of the present invention thus constructed will be described with reference to the flow chart of FIG. 3 based on the step diagram of FIG.

At the start of the multi-lamp display recall control (step 1, hereinafter, the number of steps is represented as "S1"), the lamp control circuit 8 changes the lamp display pattern of the floor number to the lamp display pattern. The data is read from the storage unit 1 and displayed on the signal lamps 2 ₁ to 2 _e in a lamp color, blinking, etc. corresponding to the lamp display pattern of the tier number.

Then, even if the compensation time stored in the program memory 6 has elapsed, the pedestrian detection signal or the vehicle detection signal is not stored in the buffer memory 7 (S2).
No), the CPU 5 does not output the step command signal and the skip command signal. Therefore, the lamp control circuit 8
It reads repeated lighting device display pattern revised number from lighting unit display pattern storage unit 1 (S3), the signal lamp device 2 ₁ to 2 _e
Continue to display in the lighting color, blinking, etc. corresponding to the lamp display pattern of the ladder number.

However, when the pedestrian detection signal and the vehicle detection signal are stored in the buffer memory 7 or are stored (YES in S2), the CPU 5 causes the main road side traveling time stored in the program memory 6 to pass. In response to this, two step command signals are output. Therefore, the lamp control circuit 8
The lamp number and the lamp display pattern of are sequentially read from the lamp display pattern storage unit 1 (S4), and the signal lamps 2 ₁ to
Light color corresponding to the revised number and the lamp unit display pattern 2 _e, are sequentially displayed in blinking.

After the passage time on the main road side stored in the program memory 6 has elapsed, the CPU 5 confirms that the pedestrian detection signal or the vehicle detection signal is stored in the buffer memory 7 (YES in S5). ), The pedestrian sensing signal is erased from the buffer memory 7, and three stepping command signals are output in accordance with the pedestrian passing time stored in the program memory 6. For this reason, the lamp control circuit 8 sequentially reads the lamp number and the lamp display pattern of the lamp number from the lamp display pattern storage unit 1 (S6), and the signal lamp 2 ₁
It is sequentially displayed in ~ _2e by the pedestal number or the lamp color corresponding to the lamp display pattern, blinking, etc.

When the pedestrian traffic time stored in the program memory 6 has elapsed, the CPU 5 confirms that the vehicle detection signal is stored in the buffer memory 7 (S
(YES of 7), the vehicle detection signal is deleted from the buffer memory 7, and one step command signal is first output according to the crossing road side traveling time stored in the program memory 6, and then two step output signals are output. . Therefore, lighting control circuitry 8, revised number, and the lamp unit display pattern sequentially read from the lighting device display pattern storage unit 1 (S8 and 9), the signal lamp device 2 ₁ to 2 _e to revised number, or No It is displayed sequentially in the color of the lamp corresponding to the lamp display pattern and blinking.

Further, after the passage time on the side of the intersection stored in the program memory 6 has elapsed, the CPU 5 checks again whether a pedestrian detection signal or a vehicle detection signal is stored in the buffer memory 7 (S2). ) Above, the above operation is repeated.

That is, when the pedestrian detection signal and the vehicle detection signal are stored in the buffer memory 7 or when they are stored, the signal lamps 2 ₁ to 2 _e are stored in the lamp display pattern storage unit 1. It is displayed sequentially in the order of the ladder number of the basic lamp display pattern, in the color of the lamp corresponding to the lamp display pattern of each ladder, and blinking.

If only the vehicle detection signal is stored in the buffer memory 7 or is stored (S2), the CPU 5 stores the pedestrian detection signal in the buffer memory 7 after performing the operation of S4. Make sure not
(NO in S5), the vehicle detection signal is erased from the buffer memory 7, and one skip command signal to the ladder number is output according to the passage time on the main road side stored in the program memory 6, followed by walking. Two advance command signals are output. Therefore, lighting control circuitry 8, revised number, and the lamp unit display pattern sequentially read from the lighting device display pattern storage unit 1 (S10 and 9), the signal lamp device 2 ₁ to 2 _e to revised number,
Alternatively, the lamp color corresponding to the lamp display pattern, and blinking are sequentially displayed.

That is, when only the vehicle detection signal is stored in the buffer memory 7 or is stored, the signal lamps 2 ₁ to 2 _e are the basic lamp indicators stored in the lamp indicator pattern storage unit 1. It is displayed in order of the lamp color and blinking, etc. corresponding to the lamp display pattern of each floor in order of the floor number excluding the floor number from the pattern.

If only the pedestrian detection signal is stored in the buffer memory 7 or is stored (S2), the CPU 5 executes the operations of S4 to S6 and then the CPU 5 transmits the vehicle detection signal to the buffer memory 7. After confirming that it is not stored (NO in S7), a skip command signal to the ladder number is output in accordance with the pedestrian passage time stored in the program memory 6 (S11). Therefore, the lamp control circuit 8
Reads the lighting device display pattern revised number from lighting unit display pattern storage unit 1 (S2), light color corresponding to the lighting device display pattern signal lamp device 2 ₁ to 2 _e to revised numbers are sequentially displayed in blinking.

That is, when only the pedestrian detection signal is stored in the buffer memory 7, or when it is stored, the signal lamps 2 ₁ to 2 _e are the basic lamps stored in the lamp display pattern storage unit 1. It is displayed in order of the lamp color and blinking corresponding to the lamp display pattern of each level in order of the level number excluding the level number and the level number from the display pattern.

FIG. 4 shows the relationship between the presence or absence of a pedestrian detection signal or a vehicle detection signal and the order of reading the steps of the lamp control circuit 8 based on the above-described operation of the traffic signal controller according to the embodiment of the present invention. Is a table.

[0024]

As described above, according to the present invention,
Depending on the presence / absence of a vehicle, a pedestrian, etc. detected by a sensor for vehicles, push buttons for pedestrians, etc., one step of a preset basic traffic control pattern may be advanced one step from a predetermined step or By instructing whether or not to skip a plurality of traffic control patterns, a plurality of traffic control patterns can be easily created from one basic traffic control pattern, and the traffic control pattern can be created easily.

[Brief description of the drawings]

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

FIG. 2 is a ladder diagram of a basic traffic control pattern according to the embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of the traffic signal controller in the embodiment of the present invention.

FIG. 4 is a table showing a relationship between presence / absence of a pedestrian detection signal or a vehicle detection signal and a tier reading order of the lamp control circuit in the traffic signal controller according to the embodiment of the present invention.

[Explanation of symbols]

1 ... lighting device display pattern storage section, 2 ₁ to 2 _e ... signal lamp device,
3 ... Pedestrian push button, 4 ... Vehicle detector, 5 ... Microprocessor (CPU), 6 ... Program memory, 7 ... Buffer memory, 8 ... Lamp control circuit.

Claims (1)

[Claims] 1. One step from a predetermined ladder corresponding to the presence or absence of a vehicle, a pedestrian, etc. detected by a preset sensor for one basic traffic control pattern, a push button for a pedestrian, etc. A traffic signal controller, wherein a plurality of traffic control patterns can be created from the one basic traffic control pattern by instructing whether to proceed or skip a plurality of times.