JPS63265400A - Control method for traffic control signal - Google Patents

Abstract

PURPOSE:To prevent an accident from expanding by providing a fire sensor in the tunnel of an automobile road and an earthquake sensor nearby the tunnel, and providing a signal, indicators, a display device, etc., in the arrival direction of vehicles from the entrance of the tunnel. CONSTITUTION:The signal 5 illuminates normally in blue unless there is abnormality and the indicators 7 and 8 indicate the maximum speed (e.g. 100km/h) of the road. Then if a fire takes place in the tunnel or of an earthquake occurs and its intensity is larger than a specific value, the fire sensor 3 or earthquake sensor ES sends a sense signal to a controller 4. Consequently, the sensor 4 outputs a control signal 10 to make a specific display on the display device 20, turns the signal 5 from blue to red, and controls the indicators 7 and 8 with a signal from a speed detector S, thereby indicating a speed lower than the normal speed indication. Therefore, if a fire takes place in the tunnel or if an earthquake occurs and its intensity is larger than the specific value, vehicles are made to slow down stepwise and stop in front of the tunnel, thereby preventing an accident from expanding.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a control method for traffic signals, that is, road signals. Fire detectors are installed in the tunnel or near the tunnel, and seismic motion sensors are installed in or near the tunnel, as well as traffic lights at predetermined intervals from the entrance of the tunnel in the same direction as the car is coming, multiple variable signs, and speed detectors that detect the speed of the car. If a fire occurs in a tunnel due to a vehicle accident such as a collision, a fire detector is activated, or an earthquake occurs. However, if the seismic motion detected by the seismic motion sensor exceeds a predetermined seismic intensity, the display will display a fire occurrence, etc., and the traffic light and variable signs will be controlled to allow entry into the tunnel. The feature is that the entry of cars is prohibited.

[Conventional technology]

Conventionally, a fire alarm is installed in the tunnel, and an alarm is issued at 4h-8- when the fire detector is activated.

[Problem that the invention seeks to solve]

If a fire is detected, it is necessary to stop the car while it is running, but if it is not stopped smoothly, a collision can occur, which is extremely dangerous.

This invention attempts to control vehicles traveling towards the tunnel entrance not only when a fire is detected but also when an earthquake is detected.

[Means for solving problems]

A fire detector will be installed inside the tunnel of the motorway, and an earthquake sensor will be installed near the tunnel, as well as one traffic light, multiple variable signs, and a vehicle speed detector from the entrance of the tunnel in the direction of vehicle arrival. , an indicator to indicate the occurrence of a fire, etc. was installed, and these traffic lights and signs were used to restrict vehicles traveling toward the tunnel entrance.

[Effect]

If a fire detector or earthquake sensor is activated, a message will be displayed on the above display to notify the driver of the occurrence of a fire, the traffic light will be switched from "Yoi" to "Red", and the speed of the vehicle will be checked using the speed detector. Then change the variable 1@weave sign to a speed sign to reduce the speed of the car in stages,
Reduce the speed of the car in stages and stop it at the traffic light.

〔Example〕

In Figure 1, (1) is a motorway, (2) is a tunnel, and (3) is a fire detector installed inside the tunnel. However, it goes without saying that two or more are provided at predetermined intervals depending on the length of the tunnel.

Reference numeral 18 indicates an earthquake sensor installed in or near the tunnel, and reference numeral 4 indicates a controller for controlling the above-mentioned fire detector and earthquake sensor, as well as traffic lights, signs, and indicators to be described later. It is mainly composed of functional elements equipped with computer-like calculation and control functions. (5) is a traffic light located a distance m11 away from the entrance (6) of the tunnel (2) in the direction of arrival of the car, and (7) is a traffic light installed at a distance of 12 distances from traffic light (5) in the direction of arrival of the car. The speed limit is displayed variably on the @1 variable sign installed at .

(8) is a second variable sign installed at a position 15 away from sign (7) in the direction of arrival of the vehicle.

Note that the relationship /1-i2=t5 is limited to /1</2<1
5. Alternatively, it is determined by various road conditions 2 surrounding environment, such as a straight road, a curve, or a crosswind warning area, such as the relationship 11-12<Is. (to) in the event of a tunnel fire or earthquake, Figure 5 (a) or (b)
This is a display that informs the driver by displaying something like this, and a dot-type electric display is recommended so that it can be seen regardless of day or night. (9) is a table that moves in the direction of the arrow.

F8 is a blinking signal (flicker signal) generation part in the controller (4), which controls blinking of both the identification and the display (1i).Furthermore, the quick check mark S is located at the farthest position from the tunnel. The sign is further installed in the direction of arrival of the vehicle, detects the speed of the vehicle (9) traveling toward the tunnel, and provides a detection signal to the controller (4).

The controller (4) receives this detection signal and sets the target! +71 +
81 f, control.

In such a configuration, if there is no abnormality, that is,
If there is no fire or earthquake, traffic lights (5)
is always marked as "evening", and signs (7) and (8) are marked as the maximum speed of the road (for example, 1001 yn/h). In such a situation, if a fire breaks out in the tunnel or an earthquake occurs, and the A degree is greater than the predetermined shaking.

A sensing signal is given from the fire detector (3) or the earthquake sensor aS to the controller (4).

Thereby, the controller (4) outputs the control signal 81 to display the display acItJlc as shown in FIG. 5 0 or (b), and switches the traffic light (5) from "evening" to "red", Based on the signal from speed detector S $
1. Control the second markers (7) and (8).

Next, the configuration examples of the sign (7), 田) are shown in Figure 2, Figure 3, and
This will be explained using figures.

Figure 2 shows an example of the structure of a sign. Reference numeral 13 denotes a round rod-shaped light guide that forms one dot with one or more pieces, is made of transparent plastic, has a flexibility of 7, and is made of transparent B.
This corresponds to A or each semi-transparent dot α2. Note that dot a3 is a character symbol or figure (picture) that will be described later.
It is the smallest unit of One end of the light guide is fixed to the dot az portion of the front plate (11), and the other end is located at the light generating device α4.

That is, the light generating device 1ta4 is composed of a light source (for example, a halogen lamp) u5 and a reflector (agFLic'roa) 4 that reflects the light emitted from this light source, and the other end of the light guide 0 is It is located at the focal point of the reflector ue.

Therefore, when the light source μ9 is turned on by the power from the power source αη, the light enters from the other end of the light guide α,
Reach -4.

FIG. 3 is an example of a case where required markings are made based on the configuration shown in FIG.

wf, Figure 4 is a sign configured as in Figures 2 and 5g3 with a means for changing the sign added, α
υ is the front plate, and (15-1) to (15-n) are the light guides.

I is a light generator, a9 is a light source, αl is a reflector, αD is a power supply, (18-1) to (1B-n) are optical switches, and the respective light guides (13-1) to (13- n) are provided in the middle, and each of the nine is selectively controlled by a selection circuit 01.

(4) is a controller, and the selection circuit 0 selectively controls the optical switch according to a signal generated from the controller (4) when detecting a fire or an earthquake.

In addition, the signal 7 generated from the flashing signal generator F8 of the controller (4)
The power signal is given to the power supply αη and the display ■.

Controls ON/OFF of both the power supply αη and the display (to).

Therefore, if the controller (4) outputs a control signal to change the speed indicator when a fire or earthquake is detected, the 9 selection circuit 0 selects an additional light switch in advance to make the speed indicator 2 lower than the normal speed indicator. Display speed signs. Therefore, the sign (
7) (81) The changed speed limit can be displayed.

〔Effect of the invention〕

This invention has two or more features, so if a fire occurs in the tunnel, an earthquake occurs, and if the fire is greater than a predetermined degree, a predetermined display is displayed on the display, The speed of vehicles traveling toward the tunnel entrance can then be gradually reduced according to the instructions of the signs, and the vehicle can be stopped in front of the tunnel, thereby preventing the spread of accidents.

In the above embodiments, a round rod-shaped light guide made of transparent plastic was used as an example.

It goes without saying that this may be replaced with an optical fiber.

By the way, as in the embodiment, the light guide and the light source.

The a@sense that combines a reflector with a commonly used light source and a public display mask (representing the shape of displayed characters, etc.)
It consumes less power compared to signs that use light, and it also tends to create illusory images when it is not coupled to a light source (with conventional signs, under bright sunlight, the light source is not lit, but the display mask surface This eliminates the phenomenon in which the lights appear to be on due to sunlight reflection, making the 41fi system extremely easy to see for drivers and the like.

[Brief explanation of drawings]

Figure 1 is a diagram for explaining the signal control method according to the present invention, Figures 2 to 4 are diagrams showing examples of signs used in this invention, and Figure @5 is a diagram showing an example of the display on the display. ,
(1) road, (2) tunnel, (3) fire detector,
(4) is the controller, (5) is the traffic light, (6) is the tunnel entrance, +71, (81 is the sign, (9) is the car, α1
is the control signal, αυ is the front plate, α is the dot, α3 is the light guide, α4 is the light generator, α9 is the light source, aQ is the reflector, α
η is the power supply. 0 seconds is a light switch, a is a selection circuit, (to) is a display,
BS is an earthquake sensor, S is a speed detector, and F8 is a blinking signal generator. Note that in FIG. 1, the same or corresponding parts are designated by the same reference numerals.

Claims (1)

[Claims] In addition to installing fire detectors in the tunnels of motorways and earthquake sensors near the tunnels, fire detectors are installed at a predetermined distance from the tunnel entrance in the direction of vehicle arrival.
A traffic light that can switch between "green" and "red" is placed, and multiple speed limit signs that can be switched are placed at a predetermined distance from the traffic light in the direction in which cars are coming from. A vehicle speed detector installed at a predetermined distance in the direction of the vehicle's arrival from the sign installed at the farthest point from the road, and a display to notify the driver in the event of a fire or earthquake. If the fire detector is activated in response to smoke or heat, or if the seismic motion sensor is activated and the seismic intensity is greater than a predetermined seismic intensity, the above display will display the information to notify the driver. At the same time, the traffic light is switched from "green" to "red," and the sign located furthest from the tunnel entrance is displayed based on the speed of the vehicle traveling toward the bridge detected by the speed detector. is changed to a speed limit lower than the maximum speed of the road in question, and the other signs located between this sign and the traffic light are changed to a lower speed limit than the sign located furthest from the tunnel entrance. At the same time, all of the above-mentioned signs and indicators are blinked by the action of the controller, and the speed of the car traveling toward the tunnel entrance is gradually reduced until it stops in front of the above-mentioned traffic light. A traffic signal control method characterized by preventing cars from entering a tunnel.