KR102604315B1 - Wireless transmission/reception device of pedestrian-operated traffic signal controller - Google Patents

Abstract

The present invention relates to a wireless transmitting and receiving device for a pedestrian-operated traffic signal controller.
The present invention includes a traffic signal controller (20) that is networked with a remote traffic control center (10) and includes a signal manipulation unit (230) that controls the lighting of traffic lights by arbitrarily manipulating the pedestrian green signal on time or the additional pedestrian green signal off time. )and; It includes a pedestrian operation switch box 30 that is installed at an intersection and has a wireless pressure button switch 310 that generates a walking signal from a pedestrian and transmits the generated walking signal request to the main control unit 100, wherein the pedestrian operation is performed. The switch box 30 is equipped with a wireless signal transmitter 320 that transmits the requested walking signal as a wireless signal, and the traffic signal controller 20 receives the wireless signal transmitted by the pedestrian operation switch box 30. The pedestrian request signal transmitted from the pedestrian operation switch box 30 to the traffic signal controller 20 is transmitted wirelessly.

Description

Wireless transmission/reception device of pedestrian-operated traffic signal controller}

The present invention controls the traffic signal controller by manipulating the pedestrian button of the pedestrian operation switch box installed on the pontoon of the traffic light so that a pedestrian walking signal can be output to the traffic light at the traffic light installed on the crosswalk at the intersection, thereby controlling the traffic of the traffic light. This relates to a pedestrian-operated traffic signal control device that can arbitrarily flash the signal cycle for a set period of time. Installation and maintenance of a pedestrian-operated traffic signal controller by wirelessly transmitting the pedestrian-activated signal output from the pedestrian-operated switch box to the traffic signal controller. It relates to a wireless transmitting and receiving device for a pedestrian-operated traffic signal controller that facilitates maintenance.

In traffic signal controllers, which are generally installed and operated at intersections or crosswalks, red, yellow, and green traffic lights for vehicles and pedestrians turn on at regular intervals to deliver signals to drivers and pedestrians. This traffic signal operation method requires pedestrians to wait a certain amount of time until the pedestrian green signal comes on in the case of a pedestrian signal, and gives pedestrian green signals at regular intervals even when there are no pedestrians, thereby unnecessarily interfering with vehicular traffic and causing excessive waiting. Time causes signal violations, providing a factor for drivers to ignore traffic signals, and can lead to jaywalking by pedestrians.

Therefore, as part of a traffic signal manual control device to improve the traffic signal operation system, it is equipped with a manual control program that flashes the traffic lights at regular intervals by a controller, and the pontoon where pedestrian traffic lights are installed at intersections is operated by a switch operated by pedestrians to control traffic. By installing a switch box that can be operated arbitrarily during a set period of time, when a pedestrian wants to cross the crosswalk, the pedestrian operating switch attached to the pedestrian traffic light pole is directly activated to stop the vehicle and turn on the pedestrian crossing (green). The signal needs to be turned on so that pedestrians can safely cross the crosswalk, and if there are no pedestrians, it is necessary to keep the vehicle green signal on to facilitate vehicle traffic. In this signal operation method, a pedestrian operating switch that can arbitrarily change the traffic signal cycle of the traffic signal controller must be installed.

In this way, in the pedestrian-operated traffic signal controller that provides a pedestrian crossing signal according to the user's request, the conventional pedestrian-operated switch has a push button switch such as a push switch (200) on the front of the switch box, as shown in FIG. 1. It has a simple structure, and when a pedestrian presses the operating switch, an interrupt signal is generated in the control circuit, outputting a vehicle stop signal, and changing the signal so that the pedestrian crossing signal lights up, allowing the pedestrian to cross the crosswalk.

The signal output from this pedestrian-operated traffic signal switch box and transmitted to the traffic signal controller is transmitted through a wired communication system such as RS-485.

This wired communication system cannot operate normally if the wiring condition of the communication line is poor, so traffic signals cannot be transmitted or received normally even if a pedestrian requests a pedestrian signal.

Accordingly, in order to restore the communication line, the road must be excavated, the problematic portion of the existing communication line must be detected, the detected problematic portion must be removed, and a new communication line must be laid, which requires a lot of time, labor, and cost. In addition, it requires a significant recovery period, and as road excavation and pedestrian-operated traffic signal controllers cannot be used for a long period of time, it causes inconvenience to both general pedestrians and pedestrians who need pedestrian-operated traffic signals.

KR KR KR

The purpose of the present invention is to solve problems arising in the installation and operation of a conventional wired communication type pedestrian-operated traffic signal controller, in which the pedestrian-operated signal output from the pedestrian-operated switch box and transmitted to the main control unit of the traffic controller is transmitted wirelessly. As a result, work such as road excavation for wiring communication lines is eliminated, allowing rapid installation work with less labor, thereby reducing initial facility costs, and also eliminating road excavation work for abnormalities and maintenance. The goal is to provide a wireless transmitting and receiving device for a pedestrian-operated traffic signal controller that can facilitate.

Another object of the present invention is to configure two or more communication channels to transmit signals using a channel with good communication quality among a plurality of communication channels, thereby preventing degradation of signal communication quality that may be caused by noise, etc. in short-distance wireless communication. The object is to provide a wireless transmitting and receiving device for a pedestrian-operated traffic signal controller that can facilitate the control of pedestrian-operated traffic signals.

The technical feature for achieving the intended purpose of the present invention is to provide a manual control program in a traffic signal device that flashes traffic lights at regular intervals, so that the traffic signal cycle can be adjusted by a switch operated by the pedestrian to output a pedestrian crossing signal. Pedestrian-operated traffic can be operated arbitrarily for a set period of time, and a luminous body is provided on the front of the pedestrian-operated switch box to identify the blinking state of the pedestrian signal, visually informing pedestrians whether the pedestrian-operated switch has been operated normally. In the signal control device, a main controller that controls the operation of the traffic signal system, a signal driver that receives the signal from the main controller and controls the lighting of the traffic light, and a time when the pedestrian green signal is turned on or the time when the additional pedestrian green signal becomes larger. A traffic signal controller networked with a remote traffic control center, including a signal operation unit that arbitrarily controls the flashing of traffic lights; It includes a pedestrian operation switch box installed at an intersection and equipped with a wireless pressure button switch that generates a walking signal from a pedestrian, and transmitting the generated walking signal request to the main controller, wherein the pedestrian operating switch box transmits the requested walking signal request to the wireless It has a wireless signal transmitter that transmits a signal, and the traffic signal controller has a wireless signal receiver that receives a wireless signal transmitted by the pedestrian operation switch box, and a pedestrian request signal is transmitted from the pedestrian operation switch box to the traffic signal controller. It is characterized in that it is transmitted wirelessly.

According to the technical features of the present invention, the wireless receiver has a power supply unit that receives AC 220V as operating power for control from a traffic signal controller according to the VME bus standard, converts it into DC power required for information processing and driving, and supplies it. , a wireless signal receiver that receives a wireless pedestrian signal transmitted from a pedestrian operation switch box, a control unit that outputs a pedestrian signal according to the pedestrian input signal received through the wireless signal receiver, and a pedestrian signal output from the control unit It is characterized by including a signal processing unit that transmits to the main control unit of the signal controller.

According to the technical features of the present invention, the pedestrian-operated switch box includes a power supply unit, a wireless push button switch that outputs a pedestrian-operated traffic signal from a pedestrian, and a wireless signal that transmits the pedestrian-operated traffic signal generated by the wireless push button switch. Includes a wireless signal transmitter.

According to the technical features of the present invention, the wireless signal receiver is installed in the form of an option board inserted into an expansion slot provided on the main board inside the traffic signal controller and interfaces with the traffic signal controller and the main controller through the VME bus (Versa Module Eurocard Bus). It includes becoming.

According to the technical features of the present invention, the wireless signal receiver includes a status display unit that provides visual information about the operating status of the operation switch box to an operator in the field.

According to the technical features of the present invention, the wireless signal transmitting unit of the pedestrian operation switch box consists of at least two transmitting modules, and the wireless signal receiver of the traffic signal controller consists of at least two receiving modules corresponding to the transmitting modules, , the Jeju control unit of the traffic signal controller compares and determines the stability of at least two channel signals input from the transmission module, sets and stores the most stable priority communication signal as the first priority communication channel, and sets and stores the first priority communication signal. Next to the channel, the stable communication signal is set and stored as the second priority communication channel, and the pedestrian signal is driven through the most stable communication signal channel according to the calculation results of the first priority communication signal and the second priority communication signal.

According to the technical features of the present invention, the transmitting module and the receiving module include at least one selected from Bluetooth, WiFi, Zigbee, and Radio Frequency (RF) module.

The purpose of the present invention and its technical problems are not limited to the technical problems described above. Therefore, other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

According to the present invention, the pedestrian operation signal output from the pedestrian operation switch box and transmitted to the main control unit of the traffic controller is transmitted wirelessly, thereby eliminating work such as excavating roads for wiring communication lines and enabling rapid installation work with less labor. Not only does this reduce initial facility costs, but road excavation work for abnormalities and maintenance is also eliminated, making maintenance easier. By using channels with good communication quality among the first and second communication channels, By transmitting signals, there is an effect of preventing deterioration of signal communication quality that may be caused by noise, etc. in short-distance wireless communication, thereby facilitating control of pedestrian-operated traffic signals.

1 is a schematic three-dimensional diagram of an intersection to which the present invention is applied.
Figure 2 is an overall system block diagram of the present invention
Figure 3 is a system block diagram of the pedestrian operated switch box of the present invention

The features and advantages of the present invention can be more easily and clearly understood from the detailed description of the embodiments described together with the accompanying drawings.

The application of the present invention is not limited by the configuration and arrangement of components described in the embodiments of the present invention or shown in the drawings. The invention may be implemented in different embodiments and carried out in various ways. Additionally, the expressions and predicates used in the embodiments regarding terms such as order, direction, etc. of devices or elements are merely used to simplify the description of the invention and indicate that the related devices or elements should simply have a particular order and orientation. It doesn't mean that.

In addition, terms or words used in this specification and claims should not be construed as limited to their common or dictionary meanings, and the inventor must comply with the technical idea of the present invention in order to explain the terms and concepts of the invention in the best possible way. It should be interpreted as written based on the meaning and concept.

Therefore, the present invention is not limited to the presented embodiments, and is within the equivalent scope of the technical idea of the present invention and the technical idea described in the patent claims below, as can be understood by those skilled in the art to which the present invention pertains. It can be modified and changed in various ways.

In the following, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a schematic three-dimensional diagram of an intersection to which the present invention is applied, Figure 2 is a block diagram of the overall system of the present invention, and Figure 3 shows a system block diagram of a pedestrian-operated switch box of the present invention.

Referring to Figures 1 to 3, the entire system of the present invention consists of a traffic control center (10), a traffic signal controller (20), a pedestrian operation switch box (30), and a wireless signal receiver (40).

The traffic control center (10) is networked with the traffic signal controller (20) through the traffic signal control system communication server at a remote location, transmits and receives information with the traffic signal controller (20) and the option module, and controls the traffic signal controller (10).

The traffic signal controller 20 consists of a power supply unit 200, a main control unit 210 (CPU), a signal driving unit 220, and a signal manipulation unit 230.

The power supply unit 200 receives AC power from the outside and supplies DC power required for the traffic signal system.

As is well known, the main control unit 210 includes the signal cycle, presentation sequence, pedestrian green signal lighting time, additional pedestrian green signal flashing time, crosswalk length, crosswalk speed, and presentation rate required for the operation of the traffic signal system. A memory storing signal operating variables is provided, and is connected to the controller of the signal driving unit 220 through serial communication to generate a signal to control the signal driving unit 220 according to the signal operating variables stored in the memory and signals input from the outside. Traffic lights are controlled for each signal step according to the designated software control function and data processing method specified in the communication protocol.

When a pedestrian input signal is generated from the pedestrian operating switch box 30, the main control unit 210 receives it through the wireless signal receiver 40, and controls the signal driving unit 220 to extend the pedestrian green signal flashing time, The vehicle signal is reduced in the corresponding cycle by the extended pedestrian green signal flashing time, so that the overall cycle remains constant.

The signal driving unit 220 is composed of a signal lighting unit (221, SCU) and a lighting operating unit (LSU: Load Switch Unit, 222).

As is well known, the signal driver 220 is a series of devices that receive signal progress commands from the main control unit 210 based on the VME bus main board of a general I/O bus, perform electrical output of traffic lights, and monitor the output results. , receives information on signal display operation plans, controls AC power through LSU to drive externally installed traffic lights, and includes a series of input means to accommodate manual operation by police officers and pedestrian input means, and a connection with the main controller. It includes an internal communication means for communication, a power control unit, and a feedback signal circuit to physically evaluate the traffic light output results, and a controller that instructs registered output by time progress and controls the output to drive the traffic light. The monitoring LSU 223 and the flasher that performs flashing control in case of emergency are connected to one system bus.

As is well known, the lighting drive device 223 includes a power control unit that controls the power supplied to the traffic lights, a detection circuit that detects the lighting voltage of the traffic lights, a red fail detection circuit, and a conflict signal detection unit (G-G Conflict Monitoring). , It consists of a data latch unit and a signal light driving circuit, receives control signals from the controller, directly controls the output power of the signal light, and transmits inspection values of the control results to the controller. That is, the LSU (223) directly controls the lighting/flashing/off control signals supplied to the external traffic light, and receives feedback data for the control result from the external traffic light to the main control unit through the SCU (222). Provided at (210).

The signal operation unit 220 configures signal operation variables including signal cycle, presentation sequence, pedestrian green signal lighting time, additional pedestrian green signal flashing time, crosswalk length, crosswalk speed, and presentation rate required for the operation of the traffic signal system. It can be input to the main control unit 210.

The pedestrian-operated switch box 30 is installed on the pontoon 60 of the traffic light 50 at an intersection and includes a power unit 300, a wireless push button switch 310, a signal processing unit 320, and a wireless signal transmission unit 330. It is composed by:

The power supply unit 300 receives AC 220V as operating power for signal output control of the pedestrian operating switch box 30 from the traffic signal controller 10 according to the VME bus standard, converts it into DC power required for signal output control, and provides wireless pressure. It is supplied to the button switch 310, the signal processing unit 320, and the wireless signal transmission unit 330.

The wireless pressure button switch 310 is installed to be exposed to the outside of the pedestrian-operated switch box 30 in the form of a bush button and outputs a pedestrian-operated traffic signal from the pedestrian. An LED is usually provided inside the button and lights up when a pedestrian-operated traffic signal is generated. It is possible to visually confirm that there is a pedestrian operation and that the Gyodong traffic light is in operation.

The signal processing unit 320 converts the pedestrian-operated traffic signal generated by the pedestrian from the wireless push button switch 310 into a signal that can be transmitted from the wireless signal transmitting unit 330.

The wireless signal transmitter 330 transmits the pedestrian-operated traffic signal generated by the wireless push button switch 310 as a wireless signal to the wireless signal receiver 40 provided in the traffic signal controller 20.

The transmitting module constituting the wireless signal transmitting unit 330 may be any wireless network configured to operably couple to the devices and systems of the wireless transmitting and receiving device of the pedestrian-operated traffic signal controller.

For example, the network may be interfaced with any one selected from Bluetooth, WiFi, Zigbee, and Radio Frequency (RF).

The wireless signal receiver 40 receives AC 220V as operating power for control from the traffic signal controller 20 according to the VME bus standard, and converts it into DC power required for information processing and driving. A wireless signal receiver 410 that receives a wireless pedestrian signal transmitted from the pedestrian operation switch box 30, a control unit 420 that outputs a pedestrian signal according to the pedestrian input signal received through the wireless signal receiver 410, and , provided on the main board of the traffic signal controller 20, including a signal processing unit 430 that transmits the pedestrian signal output from the control unit 420 to the main control unit 210 (CPU) of the traffic signal controller 20. It is composed of an option board that is removably inserted into an expansion slot and is based on a microcomputer or microprocessor, and is interfaced to the main control unit 210 through the VME bus (Versa Module Eurocard Bus), which has excellent interoperability.

This wireless signal receiver 40 performs the function of receiving a pedestrian input signal generated from the wireless signal transmitter 330 of the pedestrian operation switch box 30 and transmitting it to the main controller 210 through VMEBUS. The operation status information of (40) is transmitted to the main control unit (210) of the traffic signal controller (10) and output to the status display unit (340).

The receiving module constituting the wireless signal receiver 40 is any wireless network configured to operably couple to the device and system of the pedestrian-operated traffic signal controller, and corresponds to the wireless signal transmitting unit 330 through Bluetooth, Wi-Fi, and ZigBee. , any one of the radio frequency modules may be selected and interfaced.

The status display unit 340 is composed of LEDs and can visually provide the operating status of the wireless signal receiver 40 to the operator in the field.

Preferably, the wireless signal transmitting unit 330 consists of at least two transmission modules, and the wireless signal receiver 40 consists of at least two receiving modules corresponding to the transmitting modules of the wireless signal transmitting unit 330.

That is, the wireless signal transmitter 330 is equipped with at least two transmission modules among Bluetooth, WiFi, Zigbee, and radio frequency modules (RF),

The wireless signal receiver 40 includes at least two receiving modules interfaced to the transmitting module of the wireless signal transmitting unit 330 among Bluetooth, WiFi, zigbee, and radio frequency modules (RF). This is provided.

Accordingly, when a switching signal is input from the wireless push button switch 310, the wireless signal transmitter 330 outputs a pedestrian input signal from at least two different transmission modules, and the wireless signal receiver 40 outputs a pedestrian input signal from at least two different transmission modules. The receiving module receives the pedestrian input signal transmitted from the wireless signal transmitting unit 330 and outputs it to the main control unit 210 of the traffic signal 20.

In addition, the main control unit 210 of the traffic signal controller 20 compares and determines the stability of at least two channel signals input from the transmission module, sets and stores the most stable communication signal as the first priority communication channel, Next to the first priority communication channel, a stable communication signal is set and stored as a second priority communication channel, and a pedestrian signal is sent to the most stable communication signal channel according to the calculation results of the first priority communication signal and the second priority communication signal. This enables accurate signal transmission against noise that may interfere with the wireless network.

So far, we have looked at the manufacturing method and device of the present invention, focusing on preferred embodiments.

The manufacturing method and device of the present invention have been described with a focus on preferred embodiments with reference to the accompanying drawings, but the described embodiments and the configuration shown in the drawings are related to one of the most preferred embodiments of the present invention and represent the entire technical idea. Therefore, those skilled in the art should understand that there may be various equivalents and modified examples that can replace them without departing from the scope of the present invention.

Therefore, the scope of the present invention is not limited to the presented embodiments, but should be interpreted by the described claims to include many modifications, and the scope of the present invention should be interpreted by those skilled in the art to which the present invention pertains. Since there may be various modifications and changes possible within the equivalent scope of the technical idea and the technical idea described in the patent claims described below, the scope of the present invention should be interpreted as including many such modifications.

10: Control Center
20: Traffic signal controller
30: Pedestrian operated switch box
40: wireless signal receiver
50: Traffic lights
60: pontoon
200: power unit
210: Main fisherman
220: Signal driving unit
221:SCU
222: LSU
230: Signal operation unit
300: Power unit
310: wireless pressure button switch
320:: Signal processing unit
330: Wireless signal transmitter
400: Power unit
410: Wireless signal receiver
420: signal processing unit
430: Status display unit

Claims (7)

A traffic signal device that flashes traffic lights at regular intervals by a controller is equipped with a manual control program so that a pedestrian crossing signal can be output. The traffic signal cycle can be arbitrarily operated for a set period of time by a switch operated by the pedestrian, and the pedestrian crossing signal can be output. In the pedestrian-operated traffic signal control device, which visually informs pedestrians whether the pedestrian-operated switch has been operated normally by providing a luminous body on the front of the pedestrian-operated switch box to identify the flashing state of the signal,
a main control unit 210 that controls the operation of the traffic signal system;
a signal driver 220 that receives a signal from the main controller 210 and controls the lighting of the traffic light;
A traffic signal controller (20) networked with a remote traffic control center (10), including a signal control unit (230) that controls the lighting of traffic lights by arbitrarily manipulating the pedestrian green signal on time or the additional pedestrian green signal off time;
It includes a pedestrian operation switch box 30 that is installed at an intersection and has a wireless pressure button switch 310 that generates a walking signal from a pedestrian and transmits the generated walking signal request to the main control unit 210,
The pedestrian operated switch box 30:
A power supply unit 300,
A wireless pressure button switch 310 that outputs a pedestrian-activated traffic signal from a pedestrian,
It is provided with a wireless signal transmitter 330 that transmits a pedestrian-activated traffic signal generated by the wireless pressure button switch 310 as a wireless signal,
The traffic signal controller 20 is provided with a wireless signal receiver 40 that receives a wireless signal transmitted by the pedestrian operation switch box 30,
It includes wireless transmission of a pedestrian request signal transmitted from the pedestrian operation switch box 30 to the traffic signal controller 20,
The wireless signal transmitting unit 330 is:
It consists of at least two transmitting modules, and the wireless signal receiver 40 of the traffic signal controller 20 consists of at least two receiving modules corresponding to the transmitting modules of the wireless signal transmitting unit 330,
The main control unit 210 of the traffic signal controller 20 compares and determines the stability of at least two channel signals input from the transmission module, sets and stores the most stable priority communication signal as the first priority communication channel,
Setting and storing a stable communication signal as a second priority communication channel next to the first priority communication channel,
A wireless transmitting and receiving device for a pedestrian-operated traffic signal controller, comprising driving a pedestrian signal through the most stable communication signal channel according to the calculation result of the first priority communication signal and the second priority communication signal.
delete In claim 1,
The wireless signal receiver 40:
A power unit 400 that receives AC 220V as operating power for control according to the VME bus standard from the traffic signal controller 20, converts it into DC power required for information processing and driving, and supplies it;
A wireless signal receiver 410 that receives a wireless pedestrian signal transmitted from the pedestrian operation switch box 30,
A control unit 420 that outputs a pedestrian signal according to the pedestrian input signal received through the wireless signal receiver 410,
A wireless transmitting and receiving device for a pedestrian-operated traffic signal controller, comprising a signal processing unit (430) that transmits the pedestrian signal output from the control unit (420) to the main control unit (210, CPU) of the traffic signal controller (20).
In claim 3,
The wireless signal receiver 40 is:
A pedestrian-operated traffic signal controller that is installed as an option board in an expansion slot provided inside the traffic signal controller 20 and is interfaced to the main controller 210 through the traffic signal controller 20 and the VME bus (Versa Module Eurocard Bus). of wireless transmitting and receiving devices.
In claim 3,
The wireless signal receiver 40 is:
A wireless transmitting and receiving device for a pedestrian-operated traffic signal controller including a status display unit (440) that provides visual information about the operating state of the pedestrian-operated switch box (30) to an operator on site.
delete In claim 1,
The transmitting module of the wireless signal transmitter 330 and the receiving module of the wireless signal receiver 40 are:
A wireless transmitting and receiving device for a pedestrian-operated traffic signal controller, characterized in that at least one is selected from Bluetooth, WiFi, Zigbee, and Radio Frequency (RF).