JPS62172500A - Signal unit controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] This is a lighting control for pedestrian traffic lights, which
When "Red" is displayed, it will immediately change to "Blue" by operating the pusher.
On the other hand, if "red" has not been displayed for a certain period of time, the display switches to "blue" after waiting for a certain period of time to elapse. This allows traffic lights to be controlled without making pedestrians wait longer than necessary and without causing traffic jams.

[Industrial application field]

The present invention relates to a traffic light control device for controlling the lighting switching of pedestrian traffic lights installed at crosswalks, intersections, etc.

As for the traffic lights at -a, as shown in FIG. 4, a pedestrian traffic light 1 and a vehicle traffic light 2 are placed near the crosswalk. Then, by pressing down on the pushbutton of the pedestrian traffic light,
The display is switched from "red" to "blue". In controlling such traffic lights, it is desired to prevent vehicle congestion from occurring.

[Conventional technology]

In conventional pedestrian traffic lights 1, it takes a certain amount of time for the pedestrian traffic light 1 to actually change to "green" after a pedestrian presses the "green" switching button in order to cross the street. This is to prevent the "green" state of the vehicle traffic light 2 from becoming shorter than the above-mentioned fixed time interval, and to prevent vehicle congestion from occurring.

[Problem that the invention seeks to solve]

In the conventional control system for pedestrian traffic lights 1, pedestrians are always forced to wait for a certain period of time after pressing a push button. This is the same even when the vehicle traffic light 2 continues to be in the "green" state for a certain period of time t1 or more, as shown in FIG. 5, and is irritating to pedestrians.

[Means for solving problems]

FIG. 1 is a block diagram of the principle of the present invention. In order to solve the above-mentioned problems, the traffic light control device of the present invention includes a switch means 11 configured such that the transmission of the on-signal Saω is maintained when it is turned on, and the on-signal is cut off by the human input of the cutoff signal. lighting control means 13 which switches the lighting of the pedestrian traffic light 1 upon input of the on signal and sends a disconnection signal 5QI) to the switch means 11;
Further, a timer means 12 is provided which is activated by the ON signal of the switch means 11 and prohibits input of the ON signal to the lighting control means 13 for a predetermined period of time.

[For production]

When the switch means 11 is operated and the ON signal 500) is sent out, the lighting control means 13 is activated and the traffic light 1 is switched to "green", and at the same time the switch means 1'l is turned on.
disconnect the on signal. When the time period consisting of the lighting change from "blue" to "red" has elapsed, the traffic light 1 switches to "red" again, but by operating the switch means 11 within a predetermined time from the lighting change from "blue" to "red", the on signal is turned on again. Even if the signal is sent out, the timer 12 prohibits the input of the ON signal to the lighting control means 13, so the traffic light 1 will not turn "green". On the other hand, after a predetermined time has elapsed since the lighting is switched on, the traffic light 14 is immediately switched to "green" by operating the switch means 11. Therefore, pedestrians are not made to wait any longer than necessary.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram showing a traffic light control device as an embodiment of the present invention. In FIG. 2, 3 is a push button circuit including a push button switch, and by pressing the push button S(1), an ON signal S(1) is continuously sent out.
By receiving the disconnection signal 5 (4), the on signal S (
11 is turned off.

The ON signal S(1) of the pusher circuit 3 is inputted to the timer circuit 5 and the lighting control circuit 6 via the contacts of the relay 4. The timer circuit 5 is a circuit that sends an output signal 5 (3) to the excitation circuit of the relay 4 for a certain set time (1++t2) when it receives the ON signal 5 (2) output from the relay 4. (3) activates the relay 4 and opens its contacts.

The lighting control circuit 6 is activated by receiving the ON signal 5(2) and sends the pedestrian signal 1 to the traffic signal display signal 5(2).
5) to switch the lighting of the traffic light 1 from "red" to "blue", and simultaneously sends the contact disconnection signal 5 (4) to the push button circuit 3 upon receiving the on signal 5 (2). .

The operation of the apparatus of this embodiment will be explained below with reference to FIG. FIG. 3 is a waveform diagram of each signal of the device shown in FIG.

Let us now assume that the "green" time of the pedestrian traffic light I is tl, and the "yellow" and "red" times t2. When the push button switch of the push button circuit 3 is pressed at time T(1), an on signal S(1) is sent to the timer circuit 5 and the lighting control circuit 6 via the relay 4 as an on signal 5(2). The lighting control circuit 6 uses this ON signal 5(2) to switch the lighting of the traffic signal 1 to "blue" for a certain time interval, and also switches the lighting of the traffic signal 1 to "blue" for a certain time interval.
) is sent to the push button circuit 3 to turn on signal S (11) off.

When the timer circuit 5 receives the ON signal 5(2), it is activated and outputs the output signal 5(2) for a certain set time (tl+t2).
3) to the relay 4 to open the contact of the relay 4.

As a result, the lighting control circuit 6
On-signal 5(1) is no longer input to.

Time T (2) when the set time (L+”jz) has sufficiently elapsed
When the on signal 5(1) is output from the pushbutton circuit 3 again, the on signal S (11 is input to the lighting control circuit 6 via the relay 4, so the traffic light 1 is immediately switched to "green". , Set time from button press (t+ +t2)
For example, even if the pusher i is pressed again at time T(3), which has not elapsed, the ON signal S(1) is cut off by the relay 4 and is not input to the lighting control circuit 6. Therefore, the time interval from "green" to "green" of the traffic light l is guaranteed at least for a certain period of time t1 (that is, the "green" lighting time of the vehicle traffic light).

[Jiro effect]

According to the present invention, when a certain amount of time has elapsed since the last press of the push button, the pedestrian traffic light is immediately switched to "green" when the push button is pressed, while the vehicle traffic light is switched to "green" immediately after the push button is pressed.
Is it on the traffic light side that will always guarantee the lighting time of "Blue", which will prevent traffic jams at intersections and prevent pedestrians from waiting for a long time? 'III becomes possible.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the principle of the present invention, Fig. 2 is a block diagram of a traffic light control device as an embodiment of the present invention, Fig. 3 is a waveform diagram of each signal of the device shown in Fig. 2, and Fig. 4 is a walking diagram. 6 is a time chart of signal control by the conventional traffic light control device of FIG. 5; FIG.

Claims (1)

[Scope of Claims] Switching means configured such that the sending of an on signal is maintained when it is turned on, and the on signal is cut off when a cut signal is input, and when the on signal is input, the lighting of a traffic signal is switched. A traffic light control device comprising: lighting control means for sending a disconnection signal to the switch means; and timer means that is activated by an on signal from the switch means and prohibits input of the on signal to the lighting control means for a predetermined period of time. .