KR20070047442A - System and method for weak person crossing the road using ubiquitous - Google Patents

Abstract

The present invention relates to a ubiquitous traffic weak crosswalk system and method.

When a person with a disability including a disabled person, an elderly person, a child, and the like walks on a pedestrian crossing, RFID and a sensor recognize the start of the pedestrian crossing by using a RFID and a sensor, and detect a time when the pedestrian crossing ends. At this time, the crosswalk signal is extended until the crosswalk of the traffic weaker is completed to enable safe crosswalking.

Therefore, the traffic weaker extends the pedestrian crossing signal to the completion of the pedestrian crossing when crossing, and makes the pedestrians pedestrians safe. In addition, there is an effect to reduce excessive power consumption of the RFID reader and to prevent traffic disruption that may occur due to the absence of the timing of the operation of the RFID reader.

Traffic weak, crosswalk, RFID, crosswalk sensor

Description

System and method for weak person crossing the road using ubiquitous}

1 is a conceptual diagram of a ubiquitous traffic weak crosswalk according to an embodiment of the present invention.

2 is a structural diagram of a ubiquitous traffic weak crosswalk system according to an embodiment of the present invention.

3 is a structural diagram of a traffic light control unit according to an embodiment of the present invention.

4 is a flowchart of a traffic signal controller of a ubiquitous traffic weak crosswalk system according to an embodiment of the present invention.

The present invention relates to a traffic weak crosswalking system, and more particularly, to a system and method for a traffic weakly crosswalking in real time using a radio frequency identification (RFID) method. will be.

The conventional methods for supporting the pedestrian crossing for pedestrian crossing are related to the pedestrian crossing signal time, and when the vulnerable person presses the crossing request button installed on the pedestrian crossing traffic signal, the pedestrian signal time for displaying the green signal after a certain time passes. The cross-walking device, the remaining time display device for displaying the remaining time of the pedestrian signal time, and the voice guidance device for the visually impaired support for walking.

Prior art as described above, such as extending the cross-walking signal time, provided only the opportunity to cross the road to the traffic weaker than the normal normal walking speed, or whether the traffic weak itself such as voice guidance, remaining time guidance There was only indirect safety support for judging and crossing, and there is a problem in that it is difficult to judge whether or not to cross the road, or if there is a danger of a physically handicapped person who has a physical disability, he cannot directly guarantee the safety of the person who has a traffic disability.

Another way to support pedestrians is to extend the green signal using RFID technology. However, in this case, there is a problem that the extension of the green signal is terminated in the situation that excessive power consumption and traffic weakness due to the absence of the operation timing determination of the RFID reader has not completed the crosswalk.

Another conventional technology using RFID is Republic of Korea Patent Laid-Open Publication No. 2005-0080187, "A traffic weakness pedestrian crossing safety support system and method using radio wave identification method." This technology relates to the real-time traffic shortage pedestrian safety support system including the method of inducing the recognition of the weak in traffic area, the way to recognize the traffic shortcoming, the extension of the pedestrian crossing time, the RFID method and the installation method. When the RFID reader recognizes a tag by providing a necklace-type tag of a pedestrian, the pedestrian is recognized as a traffic weaker, and the pedestrians with a slower speed of walking support the safe walking on the crosswalk.

However, the above-mentioned conventional technology provides a crosswalk assistance service by recognizing a tag possessed by a traffic weaker when a traffic weakness is located in a waiting space which is a traffic weakness recognition area in which an RFID recognition device can recognize a tag. Even if the abbreviation does not stay in the waiting space but passes the waiting space, there is a problem that the RFID tag is recognized by the RFID recognition device. Therefore, there is a problem in that even if the crosswalk of the traffic weak is not made, the crosswalk signal time is automatically extended to impede the traffic flow.

Accordingly, the present invention is to solve the problems of the prior art as described above, and then detect the case where the traffic weak person actually enters the crosswalk after being displayed as a crosswalk signal (green signal) to support the crosswalk of the underprivileged. It provides a system and method.

In addition, the present invention provides a system and method for enabling the safe crosswalk of the weak by detecting the point of entry of the crosswalk and the completion of the crosswalk of the traffic weak by extending the crosswalk signal based on this.

One of the features of the present invention for achieving the technical problem of the present invention is installed on a pedestrian crossing road to control traffic lights that display a traffic signal including a stop signal and a pedestrian crossing signal, In a crosswalk system that provides a safe crosswalk,

An RFID tag that is separately possessed for each pedestrian including the traffic weakness and includes a traffic weakness ID for recognizing the traffic weakness; An RFID reader for reading information stored in the RFID tag; Receiving the information of the RFID tag and the entry or exit of the pedestrian from the pedestrian sensor and the RFID reader and the pedestrian sensor to recognize when the pedestrian enters or exits the pedestrian crossing and outputs the corresponding information. And a traffic light control unit for operating the RFID reader and extending the crosswalk signal display of the traffic light.

Another feature of the present invention for achieving the technical problem of the present invention is to use a reader to carry the information stored in the RFID tag possessed by a pedestrian, installed on a pedestrian crossing including a stop signal and a pedestrian crossing signal In the crosswalk control method of a system for controlling a traffic light that displays a traffic signal,

(a) detecting a signal currently displayed on the traffic light after detecting the crossing of the pedestrian crossing; (b) determining that the RFID tag holder is a traffic weaker by receiving tag information from the RFID reader when the crosswalk signal is displayed on the traffic light as a result of the determination; and (c) the RFID tag holder is a traffic weakness. In this case, the step of extending the display of the crosswalk signal of the traffic light.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention. Like parts are designated by like reference numerals throughout the specification.

In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

1 is a conceptual diagram of a ubiquitous traffic weak crosswalk according to an embodiment of the present invention.

In the embodiment of the present invention, a pedestrian having a weakness compared to a general person when walking, such as a disabled person, an elderly person, a child, is called a traffic weakness. In order to protect the pedestrian crossing of the traffic weak, RFID readers 110 and 120 are installed at both side traffic lights 500 of the pedestrian crossing, and pedestrian sensors 130 and 140 are installed at both ends of the pedestrian crossing. Recognizing the RFID tag (100) possessed by the traffic weak with the RFID reader (110, 120) provides a service for protecting the crosswalk of the traffic weak enters the crosswalk. In the embodiment of the present invention, a system and a method for protecting the pedestrian crossing of the traffic weak are presented, but are not limited thereto.

According to this concept, a system for protecting a pedestrian crossing of a traffic weaker will be described in detail with reference to FIGS. 2 and 3.

2 is a structural diagram of a ubiquitous traffic weak crosswalk system according to an embodiment of the present invention, Figure 3 is a structural diagram of a traffic light control unit according to an embodiment of the present invention.

Traffic weak crosswalk system according to an embodiment of the present invention is the first RFID reader 110, the second RFID reader 120, the first pedestrian sensor 130, the second pedestrian sensor 140, the traffic light control unit ( 400, traffic light 500, and traffic weak database 450.

The first RFID reader 110 and the second RFID reader 120 perform a function of reading the traffic weak ID data stored in the RFID tag 100 possessed by the traffic weak. Specifically, the antenna includes a directional antenna facing the crosswalk and receives the data from the RFID tag 100 carried by the pedestrian crossing the crosswalk. In addition, in order to easily recognize the pedestrians entering the crosswalk, the first RFID reader 110 and the second RFID reader 120 can recognize the data stored in the RFID tag 100 (Coverage) The diameter of may be set to be equal to the width of the crosswalk, but is not limited thereto.

In addition, the first RFID reader 110 and the second RFID reader 120 also perform a function of delivering the collected information of the RFID tag 100 of the user to the traffic weak determination unit 420. Here, the RFID tag 100 may be configured in a shape that can be easily carried, such as a necklace, bracelet, nameplate.

The first cross pedestrian sensor 130 and the second cross pedestrian sensor 140 detect the time when the cross pedestrian enters or exits the pedestrian crossing at the time of the pedestrian crossing signal, so that the first RFID reader 110 and the second RFID reader ( 120 to operate. That is, the pedestrian pedestrian sensors 130 and 140 may be connected to the first and second RFID readers 110 and 120 when the pedestrian crosses the pedestrian crossing, regardless of whether the pedestrian has the RFID tag 100. ) Function. At this time, if the pedestrian moves from the sidewalk to the crosswalk, it is determined to enter. If the pedestrian moves from the crosswalk to the sidewalk, the entry is made.

The traffic light control unit 400 receives information of a pedestrian crossing into a pedestrian crossing from the first RFID reader 110, the second RFID reader 120, the first pedestrian sensor 130, and the second pedestrian sensor 140. Collect and perform the function of controlling the traffic light 500. The traffic light control unit 400 includes an RFID reader operating unit 410, a traffic weakness determining unit 420, and a traffic signal control unit 430, as shown in FIG. 3.

The RFID reader operation unit 410 operates the RFID readers 110 and 120 by receiving information on whether the pedestrian has entered or entered the pedestrian crossing road and the current traffic light from the pedestrian sensors 130 and 140 and the traffic light 500. Performs a function to determine whether or not to That is, after receiving information indicating whether the pedestrian has entered or exited the pedestrian crossing from the pedestrian sensors 130 and 140, the signal information of the current traffic light is transmitted from the traffic light 500. The pedestrian-related traffic signal emitted from the traffic light 500 basically includes a pedestrian crossing signal (green signal) and a stop signal (red signal), and further includes a standby signal (yellow signal).

The RFID reader operating unit 410 operates the RFID readers 110 and 120 when the pedestrian enters or crosses the pedestrian crossing. At this time, when the crosswalk enters the crosswalk, traffic light signal information indicating whether the current signal light signal is a crosswalk signal is also received from the traffic light 500. For example, even if a pedestrian crosses a crosswalk, if the current traffic light is a wait signal or a stop signal, that is, if the crosswalk enters and waits in the crosswalk instead of waiting in sidewalk to enter the crosswalk, the RFID reader Do not operate (110, 120).

The traffic weakness determination unit 420 determines whether a traffic weak ID indicating that a pedestrian is a traffic weakness is included in the RFID tag 100 information of the pedestrian collected from the RFID tag 100, and the determined result is that the pedestrian is a traffic weakness. In this case, information about this is transmitted to the traffic signal controller 430. The RFID tag 100 includes not only an RFID tag ID for distinguishing a tag but a traffic weak ID for indicating whether the tag holder is a traffic weaker, but is not limited thereto.

The traffic signal controller 430 transmits the crosswalk signal extension request information to the traffic light 500 to extend the crosswalk signal until the traffic weaker advances from the crosswalk, that is, until the crosswalk is completed. In general, the traffic signal emitted from the traffic light 500 controls the traffic light display according to the traffic light reference signal provided from the traffic authority.

When the traffic light is emitted from the traffic light 500 in accordance with the traffic light reference signal, when the crossing of the traffic weakness is detected through the RFID readers 110 and 120, the crosswalk is independently supported to safely cross the weak traffic. Extend the signal. Notify the KTO about the extension of the pedestrian crossing signal, allowing the KTO to adjust the standard signal, and control the traffic lights of other pedestrian crossings associated with the traffic light 500 of the pedestrian crossing. Provide for it.

In addition, when the pedestrian crossing of the traffic weak is completed, it performs the function of converting the traffic light reference signal provided by the traffic authority for the first time. Here, the traffic light reference signal is a signal in which a signal of a traffic light blinks according to a predetermined time, and converts a pedestrian crossing signal extended by a pedestrian crossing of a traffic weak person into a traffic signal according to a predetermined time.

The traffic light 500 provides the traffic light signal information currently being emitted to the traffic light to the traffic light information determination unit 410, or extends the pedestrian crossing signal when the pedestrian is crossing the traffic, and when the pedestrian crossing is completed, the traffic light is completed. It emits a signal as a reference signal.

The traffic weak database 450 exists in a company that provides a traffic weak crosswalk system or a traffic jurisdiction. When the traffic weak begins to crosswalk, the RFID readers 110 and 120 recognize the information and store the information including the traffic weak ID of the RFID tag 100 possessed by the traffic weak, and when the crosswalk ends, The information including the traffic ID which is recognized and stored in the database is deleted. That is, it is a means for determining whether the traffic weak has completed the crosswalk on the crosswalk.

A flowchart of the traffic signal controller according to the pedestrian crossing of the traffic weak in the traffic weak crosswalk system having such a structure will be described in detail with reference to FIG. 4.

4 is a flow chart of a communication call controller of the ubiquitous traffic weak crosswalk system according to an embodiment of the present invention.

When the first pedestrian sensor 130 detects the entry of the pedestrian crossing to the crosswalk (S100), the RFID reader operating unit 410 transmits the traffic light signal information that the current traffic light is emitted from the traffic light 500 (S110). Receive. The traffic signal controller 430 determines a signal that is being emitted from the current traffic light (S120). If the current traffic light emits a pedestrian crossing signal, the traffic signal controller 430 uses the first pedestrian sensor 130 to cross the pedestrian crossing. Simultaneously with the entry detection, the first RFID reader 110 is operated. However, if the current traffic light does not emit a pedestrian signal, even if the entry of the pedestrian is detected at the first pedestrian sensor 130 (S100), the traffic light 500 continuously receives the traffic light reference signal at the traffic light at the pedestrian crossing. Based on the traffic signal (S160).

If it is determined in step S120 that the current traffic light is emitting a crosswalk signal, the first RFID reader 110 detects the RFID tag 100 (S130) to recognize the RFID tag for the crosswalk (S140). At this time, the RFID readers (110, 120) has a directional antenna to go inside the crosswalk.

In the embodiment of the present invention, because the RFID tag is used to provide a safe crosswalk of the traffic weaker, and the RFID tag is a technology used in various fields other than the present invention, the traffic weakness discriminator 420 may use the RFID reader 110. 120 determines whether the traffic weakness ID is included in the tag information read from the RFID tag 100 (S170). If the read RFID tag information does not include the traffic weak ID, the traffic light continues to emit light (S160) based on the traffic light reference signal.

If the information about the traffic weakness ID is included in the information of the RFID tag 100 read from the first RFID reader 110, whether the information about the traffic weakness corresponding to the read RFID tag 100 is stored in the information on the traffic weakness database 450. It is determined whether or not (S180). If the traffic weak ID is not stored in the traffic weak database 450, the holder of the RFID tag 100 determines that the vehicle enters the crosswalk for the first time, and then reads the traffic weak ID and the RFID reader ID that read the RFID tag 100. Pair (Pair) is stored in the traffic weak database 450 (S200).

In this case, the reason why the traffic weak ID and the RFID reader ID are stored in pairs in the traffic weak database 450 is that when a plurality of traffic weak enters the pedestrian crossing, the RFID readers 110 and 120 of each of the traffic weak have a weakness. This is for use as a means for determining whether the RFID tag is recognized or not. After the traffic weak ID and the RFID reader ID are stored in the traffic weak database 450, the mode for extending the display of the pedestrian crossing signal being emitted to the traffic light is continued (S210).

Here, when the display of the pedestrian crossing signal is extended (S210), the traffic light signal of the other pedestrian crossing road associated with the traffic light signal of the pedestrian crossing road may be simultaneously controlled by the traffic authority. This is because, in general, the traffic light signal of the crosswalk is correlated with the traffic light signals of a plurality of crosswalks, so that the change of the traffic light signal display due to the extension of the crosswalk signal has to be recognized in other crosswalks. Because.

If the traffic weak ID is already stored in the traffic weak database 450 in step S180, the ID of the RFID reader which reads the RFID tag 100 including the traffic weak ID is stored in the traffic weak database 450. It is determined whether or not the ID of the RFID reader is the same (S190). If the ID of the RFID reader recognizing the traffic weakness ID is the same as the ID of the already stored RFID reader, the mode of extending the display of the crosswalk signal is continued (S210).

However, if the ID of the RFID reader recognizing the traffic weakness ID is not the same as the ID of the RFID reader stored in the traffic weakness database 450, the holder of the RFID tag 100 including the traffic weakness ID already stored is included. Determining that the crosswalk has been completed, deletes the previously stored traffic weak ID and RFID reader ID pair (S220).

That is, when the traffic weakness ID in the RFID tag 100 recognized by the first RFID reader 110 is recognized by the second RFID reader 120 after a predetermined time, the reader ID and the first ID of the first RFID reader 110 are determined. 2 Since the reader ID of the RFID reader 120 is different from each other, it is determined that the crosswalk of the holder of the RFID tag 100 is completed, and the pair of traffic weak ID and the RFID reader ID stored in the traffic weak database 450 are deleted (S220). .

When all the traffic IDs stored in the traffic weak database 450 are deleted by the above procedure, that is, when it is determined that all traffic shorts have completed the crosswalk, the traffic light reference signal is received from the traffic jurisdiction to extend the crosswalk signal. Release it.

Here, a program for realizing a function corresponding to the configuration of the above-described embodiment of the present invention or a recording medium on which the program is recorded is also included in the scope of the present invention.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

According to the above-described embodiment, the traffic weaker extends the crosswalk signal until the completion of the crosswalk at the time of the crosswalk.

In addition, by detecting the start and completion of the crosswalk walking of the traffic weaker by sensors, it not only makes the crosswalk walking safe for the weak, but also reduces the excessive power consumption of the RFID reader and prevents the flow of traffic that may occur due to the lack of judgment on the operation time of the RFID reader. It is effective in preventing hitches.

Claims (9)

In the pedestrian crossing system, which is installed on the pedestrian crossing and controls the traffic light indicating the traffic signal including the stop signal and the pedestrian crossing signal, to provide a safe pedestrian crossing of the pedestrian including the traffic weak. An RFID tag that is separately possessed for each pedestrian including the traffic weakness and includes a traffic weakness ID for recognizing the traffic weakness; An RFID reader for reading information stored in the RFID tag; A pedestrian sensor for recognizing this when the pedestrian enters or exits a pedestrian crossing and outputs corresponding information; And A signal lamp control unit which receives the information of the RFID tag and the entry or exit information of the pedestrian from the RFID reader and the pedestrian sensor and operates the RFID reader and extends the display of the pedestrian signal of the traffic light. Traffic weak crosswalk system comprising a. The method of claim 1, The traffic light control unit, An RFID reader operating unit that determines whether to operate the RFID reader based on a signal currently displayed by the traffic light when the pedestrian sensor recognizes the pedestrian; A traffic weakness discrimination unit for determining whether a holder of an RFID tag recognized by the RFID reader is a traffic weakness; And A traffic signal controller for displaying a crosswalk signal of the traffic light when the holder of the RFID tag is determined to be a traffic weaker; Traffic weak crosswalk system comprising a. The method of claim 1, The traffic weak ID included in the RFID tag and the ID of the RFID reader are stored in pairs, and the traffic weak ID and the ID of the RFID reader are deleted when the crosswalk of the traffic weak is completed. Traffic weak crosswalk system further comprising. The method of claim 1, The traffic weak crosswalk system, characterized in that the diameter of the recognition receiving area of the RFID reader is equal to the width of the crosswalk. In the pedestrian crossing control method of a system for controlling a traffic light, which is installed on the pedestrian crossing and displaying a traffic signal including a stop signal and a pedestrian crossing signal, using a reader that carries the information stored in the RFID tag possessed by the pedestrian. , (a) detecting a signal currently displayed on the traffic light after detecting the crossing of the pedestrian crossing; (b) determining whether the RFID tag holder is a traffic weaker by receiving tag information from the RFID reader when the crosswalk signal is displayed on the traffic light as a result of the determination; And (c) if the RFID tag holder is a traffic weaker, extending the crosswalk signal display of the traffic light; Traffic weak crosswalking method comprising a. The method of claim 5, In the step (c), i) determining whether the traffic weak ID included in the RFID tag is a traffic weak ID already stored; ii) if it is determined that the traffic weak ID is not stored, storing the traffic weak ID and the RFID reader ID recognizing the RFID tag. Traffic weak crosswalking method comprising a. The method of claim 6, If it is determined in step i) that the already stored traffic weak ID, Determining whether the RFID reader ID which has read the RFID tag is identical to an already stored RFID reader ID; And If it is determined that the RFID reader ID is different from the already stored RFID reader ID, deleting the stored traffic weakness ID and the RFID reader ID. Traffic weak crosswalking method comprising a. The method of claim 5, In the step (b), if the traffic weak is a traffic light pedestrian crossing, characterized in that for controlling the display of the pedestrian crossing signal, the waiting signal and the stop signal of the traffic light according to the reference signal. The method of claim 5, The pedestrian crossing signal is pedestrian crossing characterized in that the display is extended until all the pair of stored traffic ID and RIFD reader ID is deleted.

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