KR20090008964A

KR20090008964A - Apparatus for controlling of traffic signal lamp by cars number

Info

Publication number: KR20090008964A
Application number: KR1020070072347A
Authority: KR
Inventors: 문명일
Original assignee: 주식회사 디스엔지니어링
Priority date: 2007-07-19
Filing date: 2007-07-19
Publication date: 2009-01-22

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic light control device according to the number of vehicles. Particularly, when the number of vehicles passing periodically is counted, when the number of passing vehicles increases, the lighting time of the blue light increases, and the number of passing vehicles decreases. The present invention relates to a traffic light control device according to the number of vehicles that can smooth traffic flow by reducing the lighting time of a blue light.

The constituent means of the traffic light control device according to the number of vehicles according to the present invention includes a sensor unit for detecting a vehicle in motion and outputting a detection signal in the traffic light control device according to the number of vehicles, and a detection signal output from the sensor unit. A counter unit for counting, characterized in that it comprises a control unit for periodically receiving the value counted by the counter to control the lighting time of the traffic light.

Description

Apparatus for controlling of traffic signal lamp by cars number}

Traffic lights are installed at intersections or pedestrian crossings to instruct vehicles and pedestrians to move smoothly. The driver requires various information such as traffic jam information, regulatory information, guidance information, intersection signal information, etc. while driving, and the driver relies on the cognitive means for over 90% of driving behaviors on the road. The most important part of the driver's attention is the traffic light information.

The traffic light includes a red light, a blue light, and a yellow light, and each of the lights is lit by the corresponding time. The lights are sequentially turned on for a preset time. Of course, the police officers may manually adjust the lighting time of the lights in order to facilitate the traffic flow in the morning or after work.

However, mobilizing the police officers as described above and manually adjusting the lighting time of the traffic light during the morning rush hour or after-hours is a waste of unnecessary manpower and makes it difficult for the police officers to invest time for more important work. .

In addition, when traffic congestion occurs unexpectedly in addition to the morning commute time or leaving time, it is difficult to cope quickly because the police officers go out emergency and manually adjust the lighting time of the traffic lights.

The present invention was devised to solve the above problems of the prior art, and counting the number of vehicles passing periodically, when the number of passing vehicles is increased, increases the lighting time of the blue light, and decreases the number of passing vehicles In this case, it is an object of the present invention to provide a traffic light control device according to the number of vehicles that can smoothly flow traffic by reducing the lighting time of a blue light.

In order to solve the above technical problem, the constituent means of the traffic light control device according to the number of vehicles, which is the present invention proposed, is to detect a vehicle in motion and output a detection signal in the traffic light control device according to the number of vehicles. A sensor unit, a counter unit for counting the detection signal output from the sensor unit, characterized in that it comprises a control unit for controlling the lighting time of the traffic signal by periodically receiving the value counted from the counter unit.

In addition, the sensor unit is characterized by consisting of the same number of sensors as the number of lanes on the road.

The counter may be initialized at the same time that the controller receives the counting value.

The control unit may compare the value counted by the counter unit with a preset reference value, and when the counting value is greater than or equal to the reference value, increase the blue light on time of the traffic light, and when the counting value is less than the reference value. It characterized in that for reducing the blue light lighting time of the traffic light.

The control unit may compare the value counted by the counter unit with a table in which the number of passing vehicles and the blue light lighting time match, and turn on the blue light during the corresponding time.

According to the traffic light control apparatus according to the number of vehicles of the present invention having the configuration and the preferred embodiment as described above, by counting the number of vehicles passing periodically, when the number of vehicles passing through increases the lighting time of the blue light, When the number of passing vehicles is reduced, since the lighting time of the blue light is reduced, there is an advantage that the traffic flow can be smooth.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of a traffic light control device according to the number of vehicles of the present invention made of the above configuration means.

1 is a schematic diagram of installation of a traffic light control device according to the number of vehicles of the present invention.

As shown in Figure 1, the traffic light control device 100 according to the number of vehicles of the present invention is mounted on the top of the traffic light mounting (300). The traffic light control device 100 installed on the upper end of the traffic light installation stand 300 adjusts the lighting time of the traffic light 200 is attached to the lower end of the traffic light installation (300).

As described above, the configuration of the traffic light control device 100 installed at the upper end of the traffic light installation stand 300 is as shown in FIG. 2.

As shown in FIG. 2, the traffic light control apparatus 100 of the present invention includes a sensor unit 10, a counter unit 20, and a control unit 30.

The sensor unit 10 detects a vehicle driving on the road after passing the traffic light 200 shown in FIG. 1, and outputs a detection signal. That is, the sensor unit 10 continuously senses whether there is a vehicle passing through the road and outputs the result value. For example, the sensor unit 10 is configured as an ultrasonic sensor to continuously detect an object (vehicle).

At this time, the ultrasonic sensor constituting the sensor unit 10 sends a signal in a direct direction, and detects a vehicle passing through the direct direction of the ultrasonic sensor. The sensor unit 10 may use not only an ultrasonic sensor but also other sensors capable of detecting an object.

The sensor unit 10 is configured to output a high ("1") signal only when a vehicle is detected as a detection signal. The number of ultrasonic sensors constituting the sensor unit 10 may be variously selected. The number of sensors constituting the sensor unit 10 according to the present invention is the number of lanes of a road (one way) in a moving direction of the vehicle. It is preferable to configure the same as. That is, as shown in FIG. 1, in the case of a three-way one-way lane, three sensors use each sensor to detect whether there is a vehicle moving along each lane.

As described above, the detection signal output from the sensor unit 10 is input to the counter unit 20, and the counter unit 20 counts the number of the input detection signals. That is, the number of High (“1”) signals among the detection signals output from the sensor unit 10 is continuously counted. As a result, the value counted by the counter unit 20 means the number of vehicles passing the one way.

When the number of sensors constituting the sensor unit 10 is plural, the counter unit 20 may be configured in plural so as to count the detection signals output from the plurality of sensors.

As will be described later, the value counted by the counter 20 is periodically taken by the controller 30. When the controller 30 takes the counted value, the counter 20 is immediately initialized and counts the number of newly moving vehicles.

The value counted by the counter 20 is periodically input to the controller 30 according to the control signal of the controller 30. The controller 30 periodically receives a value counted by the counter 20 to control the lighting time of the traffic light 200.

At this time, the counter unit 20 is initialized at the same time as the control unit 30 receives the counting value as described above, and counts the number of vehicles passing a new one way. When the number of the counter units 20 is plural, the controller 30 receives a counted value from each counter unit 20, and then controls the lighting time of the traffic lights by using the added values. do.

After the control unit 30 receives the counted value from the counter unit 20, a method of controlling the lighting time of the traffic light is as follows.

As a first method, the control unit 30 compares the value counted by the counter unit 20 with a preset reference value. As a result of the comparison, when the counting value is equal to or greater than the reference value, the traffic light is controlled to increase the blue light on time of the traffic light. On the contrary, when the counting value is less than the reference value, the traffic light is controlled to reduce the blue light on time of the traffic light.

The reference value refers to the range of the number of vehicles passing the one way during the period in which the control unit 30 gets the counted value from the counter unit 20 in addition to the commute and leave time. That is, at a time when the traffic is smoothly communicated, the control unit 30 sets the range of the number of vehicles passing through the one-way as the reference value during one period of obtaining a value counted from the counter unit 20.

For example, assuming that one cycle is 1 minute, the reference value may be set to 100 to 150 units. At this time, when the control unit 30 has more than 150 counting values obtained from the counter unit 20, the lighting time of the blue light of the traffic light is increased. That is, although the blue light of the traffic light is initially set to light for 30 seconds, when the counting value input from the counter unit 20 is 150 or more, the lighting time of the blue light may be increased (eg For example, 40 seconds) the controller 30 controls the traffic light.

If the counting value input from the counter unit 20 is less than the lower limit of the reference value (number of vehicles), the control unit may reduce the lighting time of the blue light (for example, 25 seconds). 30 controls the traffic light.

After the control unit 30 receives the counted value from the counter unit 20, a second method of controlling the lighting time of the traffic light is as follows.

The control unit 30 compares the value counted by the counter unit 20 with a table in which the number of passing vehicles and the blue light lighting time are matched, and controls to turn on the blue light during the corresponding time.

The table is configured as follows and will be stored in the storage means.

Passing vehicles 1 to 30 31-50 51-100 101-200 201 to 300 More than 300 Blue light lighting time 10 sec 20 seconds 30 seconds 40 seconds 50 seconds 60 seconds

That is, when the number of passing vehicles (counted value) is in the range of 1 to 30 vehicles during one cycle (a period in which the controller 30 gets a value counted from the counter unit 20), the controller 30 is blue. The traffic light is controlled to be turned on for 10 seconds, 20 seconds for 31 to 50 cars, 30 seconds for 51 to 100 cars, 40 seconds for 101 to 200 cars, 201 to 300 cars. In the case of 50 seconds, in the case of 300 or more, the control unit 30 controls the traffic light so that the blue light is turned on for 60 seconds.

As such, if the lighting time of the blue light is adjusted according to the number of vehicles passed during a certain period, the traffic may be smoothly communicated, thereby preventing traffic congestion.

In the above, the traffic light control apparatus described above is installed in each traffic light, each control device is preferably configured to be linked to each other, to share data with each other. In addition, it is preferable that the data (the number of vehicles moving during the cycle, the blue light turn-on time, etc.) generated in each control device is transmitted to the central server so that it can be monitored in real time. As data is transmitted to the central server as described above, and each of the control devices is connected to each other, the central server can be constructed as a system capable of monitoring and controlling the traffic network in real time.

1 is a schematic diagram of an apparatus for controlling traffic light according to the number of vehicles according to an exemplary embodiment of the present invention.

2 is a block diagram of a traffic light control apparatus according to the number of vehicles according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: sensor unit 20: counter unit

30: control unit

Claims

In the traffic light control device according to the number of vehicles,

A sensor unit which detects a driving vehicle and outputs a detection signal;

A counter unit for counting a detection signal output from the sensor unit;

And a control unit configured to periodically receive a value counted by the counter to control a lighting time of the traffic light.

The method according to claim 1,

The sensor unit traffic light control device according to the number of vehicles, characterized in that composed of the same number of sensors as the number of lanes of the road.

The method according to claim 1,

And the counter unit is initialized at the same time that the control unit receives the counting value.

The method according to claim 1,

The controller compares a value counted by the counter unit with a preset reference value, and when the counting value is greater than or equal to the reference value, increases the blue light on time of the traffic light, and when the counting value is less than the reference value, Traffic light control device according to the number of vehicles, characterized in that to reduce the blue light lighting time of the traffic light.

The method according to claim 1,

And the control unit compares a value counted by the counter unit with a table in which the number of passing vehicles and the blue light lighting time are matched, and lights the blue light during the corresponding time.