KR102648144B1 - Smart traffic light guidance system for crosswalks - Google Patents

Abstract

A smart traffic light guidance system for crosswalks is launched. According to an embodiment of the present disclosure, a smart traffic light guidance system for a crosswalk includes a column-shaped post, at least one of a floor provided at the bottom of the post in a direction parallel to the pedestrian stop line of the crosswalk and a direction perpendicular to the pedestrian stop line. An LED module that emits an LED (light emitting diode) beam in the direction of, an LED display device provided on the rear or front of the post, and a plurality of types provided on one side of the outer surface of the post to detect information related to the surrounding environment of the post A sensor, a voice output module provided on the other side of the post and outputting a message to be provided to at least one of a pedestrian or a driver; and at least one processor that controls the LED module, the LED display device, the plurality of types of sensors, and the audio output module.

Description

Smart traffic light guidance system for crosswalks {SMART TRAFFIC LIGHT GUIDANCE SYSTEM FOR CROSSWALKS}

This disclosure relates to a traffic light guidance system for crosswalks, and more specifically, a smart traffic light guidance system for crosswalks that uses LED lights and sign panels to inform pedestrians and drivers whether they can stop or move in response to traffic light signals. It's about.

In general, a crosswalk refers to a place designated for pedestrian crossing by road signs or road markings in accordance with the Road Traffic Act.

However, accidents often occur when drivers fail to quickly spot a crosswalk when driving at night, and recently, the number of accidents caused by pedestrians walking with their heads down due to smartphone use has been increasing.

Accordingly, in the past, technology has been proposed for a floor traffic light that is controlled in conjunction with a crosswalk traffic light on a sidewalk near a crosswalk or on the floor within a crosswalk, and Korean Patent Publication No. 10-2009-0085239 describes a floor-embedded traffic light. In this regard, Korean Patent Publication No. 10-0679852 interpolates a lighting device that has the same standard as a sidewalk block and emits light upward by forming a space inside, and is connected to a pedestrian traffic light on a crosswalk to create a lighting device. Discloses a lighting system that is controlled to operate like a traffic light.

However, the conventionally disclosed floor traffic lights and block-type lighting systems have a problem in that they are difficult to apply to crosswalks without traffic lights because they are controlled in conjunction with traffic lights installed at the crosswalk.

Therefore, it can be applied even to crosswalks where traffic lights are not installed, and the output signals of the LED module and audio output module can be controlled depending on the surrounding environment illumination and the degree of pedestrian density, preventing light and noise pollution in advance. Research on smart traffic light guidance systems for crosswalks is needed.

The purpose of the present disclosure is to provide a smart traffic light guidance system for crosswalks that uses LED lights and sign panels to inform pedestrians and drivers whether they can stop or move in response to traffic light signals.

In addition, the purpose of the present disclosure is to control the brightness of the LED module in response to the surrounding environment, calculate the density of pedestrians waiting at the crosswalk, and adjust the volume of the voice output module to prevent pollution and noise pollution in advance. The goal is to provide a smart traffic light guidance system for crosswalks.

The problems to be solved by the present disclosure are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

According to an embodiment of the present disclosure, a smart traffic light guidance system for crosswalks includes a pillar-shaped post; An LED module provided at the bottom of the post and emitting a light emitting diode (LED) beam toward at least one of a direction parallel to the pedestrian stop line of the crosswalk and the floor perpendicular to the pedestrian stop line; An LED display device provided on the rear or front side of the post; A plurality of types of sensors provided on one side of the outer surface of the post to detect information related to the surrounding environment of the post; a voice output module provided on the other side of the post to output a message to be provided to at least one of pedestrians and drivers; and at least one processor that controls the LED module, the LED display device, the plurality of types of sensors, and the audio output module, wherein the at least one processor includes a human body detection sensor among the plurality of types of sensors. And based on data collected from at least one of the infrared sensors, whether a pedestrian exists in the first area is identified based on the walking direction of the crosswalk, and based on the identification of the first pedestrian in the first area as being present. Thus, signal information is received from a signal device installed at the crosswalk, a control message generated based on the received signal information is output through the LED display device and the voice output module, and among the plurality of types of sensors When the speed of a vehicle approaching the crosswalk detected through a speed sensor exceeds a first threshold, and the time required for the signal information to change from a pedestrian stop signal to a pedestrian walking signal is less than or equal to a second threshold Based on this, a yellow LED beam indicating a deceleration message requesting to slow down can be output through the LED module in a direction perpendicular to the pedestrian stop line.

In addition, the plurality of types of sensors include an illuminance sensor, a rain detection sensor, and a fog detection sensor, and the one or more processors acquire illuminance data in the second area based on the post through the illuminance sensor, Obtain precipitation data in the second area through the rain detection sensor, obtain the amount of fog in the second area through the fog detection sensor, and apply a first weight to the illuminance data to obtain a first intermediate value. A second intermediate value is obtained by applying a second weight to the precipitation data, a third intermediate value is obtained by applying a third weight to the fog amount, and the first intermediate value and the second intermediate value are obtained. Obtaining an LED brightness control value corresponding to a final value obtained by adding the intermediate value and the third intermediate value, and based on the LED brightness adjustment value, the intensity of the LED beam emitted by the LED module and the LED of the LED display device Brightness can be adjusted.

And, the one or more processors calculate the pedestrian density in the first area based on data collected from at least one of the human body detection sensor and the infrared sensor, and collect data from at least one of the speed detection sensor and the infrared sensor. Calculate the vehicle density in the first area based on the data, and based on the pedestrian density and the vehicle density, i) LED brightness of the LED module and the LED display device, ii) emitted through the LED module The intensity and thickness of the LED beam, and iii) the volume of the voice message output through the voice output module can be determined.

And, the post further includes a recognition module including at least one of a near field communication (NFC) module, a radio-frequency identification (RFID) module, and an IC module, wherein the first terminal device used by the first pedestrian recognizes the post. Based on tagging the module, the illuminance data, the precipitation data, the fog amount, and the signal information will be transmitted to the first terminal device through at least one of the NFC module, the RFID module, and the IC module. You can.

And, the one or more processors obtain the moving speed of each of the plurality of pedestrians crossing the crosswalk based on data acquired through the human body detection sensor, the infrared sensor, and the image sensor among the plurality of types of sensors. And, determine whether a second pedestrian with the slowest moving speed among the plurality of pedestrians can cross the crosswalk within a specific time period corresponding to the pedestrian walking signal, and determine whether the second pedestrian can cross the crosswalk within the specific time period. Based on the determination that the second pedestrian cannot cross the crosswalk, a message containing information about the second pedestrian is output through the LED display device and the voice output module, and an LED is displayed in an area corresponding to the current location of the second pedestrian. The LED module can be controlled to emit a beam.

In addition to this, a computer program stored in a computer-readable recording medium for execution to implement the present disclosure may be further provided.

In addition, a computer-readable recording medium recording a computer program for executing a method for implementing the present disclosure may be further provided.

According to various embodiments of the present disclosure, a smart traffic light guidance system for a crosswalk can be provided by using LED lighting and a sign panel to inform pedestrians and drivers whether they can stop or move in response to traffic light signals.

In addition, according to various embodiments of the present disclosure, it is possible to control the brightness of the LED module in response to the surrounding environment, calculate the density of pedestrians waiting at the crosswalk, and adjust the volume of the voice output module to prevent pollution and noise pollution in advance. A smart traffic light guidance system can be provided for crosswalks that can prevent crosswalks.

In addition, according to various embodiments of the present disclosure, it is possible to control the brightness of the LED module in response to the surrounding environment, calculate the density of pedestrians waiting at the crosswalk, and adjust the volume of the voice output module to prevent pollution and noise pollution in advance. Preventable effects may result.

In addition, according to various embodiments of the present disclosure, by detecting whether an accident has occurred near a crosswalk, including a photography means for collecting road images, and storing the accident image on a designated server when an accident occurs, the accident victim and the police Upon request, the effect of providing reference material for traffic accident disputes such as hit-and-run can be derived.

The effects of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned may be clearly understood by those skilled in the art from the description below.

1 is a diagram for explaining a smart traffic light guidance system for a crosswalk, according to an embodiment of the present disclosure.
Figure 2 is a diagram for explaining the configuration of a post in a smart traffic light guidance system for a crosswalk, according to an embodiment of the present disclosure.
Figure 3 is a diagram for explaining the configuration of a post according to an embodiment of the present disclosure.

The advantages and features of the present disclosure and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure is complete and to provide a general understanding of the technical field to which the present disclosure pertains. It is provided to fully inform those skilled in the art of the scope of the present disclosure, and the present disclosure is defined only by the scope of the claims.

The terminology used herein is for the purpose of describing embodiments and is not intended to limit the disclosure. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other elements in addition to the mentioned elements.

Like reference numerals refer to like elements throughout the specification, and “and/or” includes each and every combination of one or more of the referenced elements. Although “first”, “second”, etc. are used to describe various components, these components are of course not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical spirit of the present disclosure.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings commonly understood by those skilled in the art to which this disclosure pertains. Additionally, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless clearly specifically defined.

Spatially relative terms such as “below”, “beneath”, “lower”, “above”, “upper”, etc. are used as a single term as shown in the drawing. It can be used to easily describe the correlation between a component and other components. Spatially relative terms should be understood as terms that include different directions of components during use or operation in addition to the directions shown in the drawings.

For example, if a component shown in a drawing is flipped over, a component described as “below” or “beneath” another component will be placed “above” the other component. You can. Accordingly, the illustrative term “down” may include both downward and upward directions. Components can also be oriented in other directions, so spatially relative terms can be interpreted according to orientation.

In describing the present disclosure, “pedestrian” may refer to a person attempting to cross a crosswalk. Additionally, “signal device” may refer to (smart) traffic lights that guide signals to vehicles traveling across a crosswalk.

Below, we will explain the smart traffic light guidance system for crosswalks.

1 is a diagram for explaining a smart traffic light guidance system for a crosswalk, according to an embodiment of the present disclosure.

As shown in FIG. 1, the smart traffic light guidance system 1000 for a crosswalk includes a post 100, terminal devices 200-1, 200-2, ..., 200-N (N) used by a plurality of pedestrians. may include a natural number of 1 or more) and a signaling device (e.g., smart traffic light, etc.) 300.

In Figure 1, the terminal devices 200-1, 200-2, ..., 200-N used by a plurality of pedestrians are shown in the form of a smartphone, but are not limited thereto. Terminal devices 200-1, 200-2, ..., 200-N used by a plurality of pedestrians may be implemented as various types of electronic devices (eg, wearable devices, tablet PCs, etc.).

Post 100 included in the system 1000, terminal devices (200-1, 200-2, ..., 200-N) used by a plurality of pedestrians (N is a natural number of 1 or more), and a signaling device (e.g., smart traffic light, etc.) 300 can perform communication through the network (W).

Here, the network W may include a wired network and a wireless network. For example, the network may include various networks such as a local area network (LAN), a metropolitan area network (MAN), and a wide area network (WAN).

Additionally, the network W may include the known World Wide Web (WWW). However, the network (W) according to an embodiment of the present disclosure is not limited to the networks listed above, and may include at least some of a known wireless data network, a known telephone network, and a known wired and wireless television network.

The post 100 may be provided in a (square) pillar shape with a mounting space provided therein. The post 100 can provide various functions related to the smart traffic light guidance system 1000 for a crosswalk.

The post 100 can recognize the situation around the crosswalk through data acquired through various sensors and provide a guidance function according to the recognized situation. The post 100 can provide signal-related guidance messages through various LED modules, displays, or speakers (i.e., voice output modules).

Terminal devices 200-1, 200-2, ... 200-N used by a plurality of pedestrians can exchange various data with the post 100. As an example, terminal devices 200-1, 200-2, ... 200-N used by a plurality of pedestrians may receive and output various sensing data from the post 100. Through this, the terminal devices 200-1, 200-2, ... 200-N used by a plurality of pedestrians can efficiently provide various data stored by the post 100 to the pedestrians.

The signal device 300 may transmit predefined signal information to the post 100. In other words, the signal device 300 can share signal information guiding vehicles traveling across the crosswalk with the post 100, and the post 100 can generate various guidance messages based on the shared signal information. You can.

Figure 2 is a diagram for explaining the configuration of a post in a smart traffic light guidance system for a crosswalk, according to an embodiment of the present disclosure.

As shown in FIG. 2, the post 100 may include a memory 110, a communication module 120, an LED display device 130, an LED module 140, a sensor 150, and a processor 160. there is. However, it is not limited to this, and the software and hardware configuration of the post 100 may be modified/added/omitted depending on the required operation within a range that is obvious to those skilled in the art.

The memory 110 can store data supporting various functions of the post 100 and a program for the operation of the processor 160, and can store input/output data, and can store data that is input/output and operated by the post 100. Multiple application programs (application programs or applications), data for operation of the post 100, and commands can be stored. At least some of these applications may be downloaded from an external server via wireless communication.

The memory 110 is of a flash memory type, hard disk type, solid state disk type, SDD type (Silicon Disk Drive type), and multimedia card micro type. micro type), card type memory (e.g. SD or XD memory, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), EEPROM (electrically erasable) It may include at least one type of storage medium among programmable read-only memory (PROM), programmable read-only memory (PROM), magnetic memory, magnetic disk, and optical disk. In addition, the memory 110 is separate from the main post 100, but may be a database connected by wire or wirelessly.

The communication module 120 may include one or more components that enable communication with external devices (e.g., terminal devices and signal devices used by multiple pedestrians, etc.), for example, a wireless communication module or a location information module. It may include at least one of:

Here, the wireless communication module includes, in addition to the Wi-Fi module and WiBro (Wireless broadband) module, GSM (global System for Mobile Communication), CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), and UMTS (universal mobile). It may include a wireless communication module that supports various wireless communication methods such as telecommunications system, TDMA (Time Division Multiple Access), LTE (Long Term Evolution), 4G, 5G, and 6G.

The wireless communication module may include a wireless communication interface including an antenna and a transmitter that transmits various signals. Additionally, the wireless communication module may further include a signal conversion module that modulates a digital control signal output from the control unit through a wireless communication interface into an analog wireless signal under the control of the control unit.

The wireless communication module may include a wireless communication interface including an antenna and a receiver that receives various signals. Additionally, the wireless communication module may further include a signal conversion module for demodulating an analog wireless signal received through a wireless communication interface into a digital control signal.

The LED display device 130 may be provided on the rear or front of the post 100 and displays (outputs) information processed within the post 100. For example, the LED display device 130 displays execution screen information of an application program (eg, an application) running in this post 100, or a UI (User Interface) or GUI (Graphic User Interface) according to this execution screen information. ) information can be displayed.

Additionally, the LED display device 130 may include a plurality of LED elements, and may control the plurality of LED elements to display a specific message/phrase (eg, “walking”, etc.).

The LED display device 130 may have a built-in voice output module, and the voice output module can output a message to be provided to at least one of pedestrians and drivers. However, this is only one embodiment, and the audio output module may be separately provided on the other side of the outer surface of the post 100.

The LED module 140 is provided at the bottom/top of the post 110 and can emit an LED beam toward at least one of the directions parallel to the pedestrian stop line of the crosswalk and the floor perpendicular to the pedestrian stop line.

The sensor 150 may collectively refer to a plurality of sensors capable of detecting information related to the surrounding environment of the post (eg, pedestrians and vehicles located around the post/crosswalk, weather around the post/crosswalk, etc.).

As an example, the sensor 150 may include a human body detection sensor, an infrared sensor, an illumination sensor, a speed detection sensor, a rain detection sensor, an image sensor, and a fog detection sensor. The sensors described above may be provided on one side of the outer surface of the post 100, but are not limited thereto. The sensors described above may be provided at various locations on the post 100.

The processor 160 includes a memory that stores data for an algorithm for controlling the operation of components within the post 100 or a program that reproduces the algorithm, and at least one device that performs the above-described operation using the data stored in the memory. It can be implemented with a processor (not shown). At this time, the memory and processor may each be implemented as separate chips. Alternatively, the memory and processor may be implemented as a single chip.

As an example of the present disclosure, the processor 160 determines whether a pedestrian exists in the first area based on the walking direction of the crosswalk based on data collected from at least one of a human body detection sensor and an infrared sensor among a plurality of types of sensors. can be identified.

The human body detection sensor and/or the infrared sensor may obtain sensing data that can identify the presence or absence of at least one object existing in the first area and movement information of at least one object based on the post 100. Here, the first area may include an area where a crosswalk exists.

The processor 160 may identify whether a pedestrian exists in the first area through sensing data obtained from a human body detection sensor and/or an infrared sensor.

Based on the identification of the presence of the first pedestrian in the first area, the processor 160 receives signal information from a signal device installed on the crosswalk, and sends a control message generated based on the received signal information to the LED display device and the It can be output through the audio output module.

Specifically, the processor 160 may receive signal information from a signal device through the communication module 120. Here, the signal information may include information about pedestrian stop signals and/or vehicle stop/driving signals provided by the signaling device based on the current time.

Additionally, the signal information may include the time required to change from a pedestrian stop signal to a pedestrian walking signal and/or the time required to change from a pedestrian protection signal to a pedestrian stop signal.

For example, when receiving signal information indicating that a pedestrian stop signal is currently being output from the signal device, the processor 160 irradiates a red LED beam through the LED module 140 in a direction parallel to the pedestrian stop line of the crosswalk. can do. At the same time, the processor 160 may periodically output a message requesting the pedestrian to stop through the voice output module.

As another example, upon receiving signal information indicating that a vehicle stop signal is currently being output from the signal device, the processor 160 sends a green LED beam through the LED module 140 in a direction parallel to the pedestrian stop line of the crosswalk. can be investigated. At the same time, the processor 160 can irradiate a red LED beam on the floor in a direction perpendicular to the pedestrian stop line of the crosswalk through the LED module 140, and periodically through the voice output module to enable pedestrians to cross the crosswalk. You can output a message requesting something.

As an example of the present disclosure, the speed of a vehicle approaching a crosswalk detected through a speed sensor exceeds a first threshold, and the time required for signal information to be converted from a pedestrian stop signal to a pedestrian walking signal is a second threshold. Based on the value or less, the processor 160 may output a yellow LED beam indicating a deceleration message requesting to decelerate through the LED module 140 in a direction perpendicular to the pedestrian stop line.

As an example of the present disclosure, the processor 160 may obtain illuminance data in the second area based on the post 100 through an illuminance sensor. The processor 160 may acquire precipitation data in the second area through a rain detection sensor. The processor 160 may obtain the amount of fog in the second area through a fog detection sensor. Here, the second area may be the same as the first area, but is not limited thereto. The second area may refer to an area larger than the first area based on the post 100.

The processor 160 obtains a first intermediate value by applying a first weight (e.g., the first weight is a negative/positive number) to the illuminance data, and obtains a second intermediate value by applying a second weight to the precipitation data. And, a third intermediate value can be obtained by applying a third weight to the amount of fog.

The processor 160 may obtain an LED brightness adjustment value corresponding to a final value obtained by adding the first intermediate value, the second intermediate value, and the third intermediate value. A higher final value may mean that pedestrians cannot clearly see the LED beam output from the LED module 140 or/and the LED display device 130 due to surrounding environmental factors. Therefore, the size of the final value can be predefined to be proportional to the brightness of the LED beam.

The processor 160 may adjust the intensity of the LED beam emitted by the LED module 140 and the brightness of the LED of the LED display device 130 based on the LED brightness control value. For example, when the LED brightness control value is obtained as a large value, the processor 160 may set the intensity of the LED beam emitted by the LED module 140 and the LED brightness of the LED display device 130 to a high value. .

Additionally, the processor 160 may calculate the pedestrian density in the first area based on data collected from at least one of a human body detection sensor and an infrared sensor. Additionally, the processor 160 may calculate the vehicle density in the first area based on data collected from at least one of the speed sensor and the infrared sensor.

And, based on the pedestrian density and vehicle density, the processor 160 determines i) the LED brightness of the LED module 140 and the LED display device 130, ii) the intensity of the LED beam emitted through the LED module 140, and thickness, and iii) the volume of the voice message output through the voice output module.

For example, the higher the pedestrian density and vehicle density, the processor 160 may set the LED brightness of the LED module 140 and the LED display device 130 to a higher value.

As an example, the processor 160 may obtain a fourth intermediate value by applying a fourth weight to the pedestrian density and vehicle density. The processor 160 may obtain an LED brightness adjustment value corresponding to a final value obtained by adding the first intermediate value, the second intermediate value, the third intermediate value, and the fourth intermediate value. That is, the processor 160 may adjust the LED brightness adjustment value by referring to the pedestrian density and vehicle density in the first area in addition to the illuminance data, precipitation data, and fog amount in the second area.

In addition, the higher the pedestrian density and vehicle density, the processor 160 can set the intensity and thickness of the LED beam emitted through the LED module 140 to a high value, and the volume of the voice message output through the voice output module can be decided.

Additionally, the post 100 may include a recognition module including at least one of a near field communication (NFC) module, a radio-frequency identification (RFID) module, and an IC module. The recognition module may be implemented as a component of the communication module 120.

As an example, based on the tagging of the recognition module by the first terminal device used by the first pedestrian, the processor 160 stores illuminance data, precipitation data, fog data, and signal information among the NFC module, RFID module, and IC module. It can be transmitted to the first terminal device through at least one.

That is, the processor 160 may transmit data received from various sensors 150 and signal devices to the first terminal device through at least one of an NFC module, an RFID module, and an IC module.

The first terminal device may provide a user interface (UI) including illuminance data, precipitation data, fog data, and signal information received from the post 100. Accordingly, the first pedestrian can receive various information by tagging the first terminal device in the area where the recognition module of the post 100 is located.

As an example, identification information (eg, a sticker, etc.) indicating the location where the recognition module is embedded may be provided on one side of the outer surface of the post 100 (i.e., an area corresponding to the location where the recognition module is embedded).

As an example of the present disclosure, the processor 160 may obtain the movement speed of each of a plurality of pedestrians crossing a crosswalk based on data acquired through a human body detection sensor, an infrared sensor, and an image sensor.

In addition, the processor 160 allows the second pedestrian with the slowest moving speed among the plurality of pedestrians to cross the crosswalk within a specific time period corresponding to the pedestrian walking signal (i.e., the time period indicated by the pedestrian walking signal on the signaling device). You can determine whether it exists or not. That is, the processor 160 may determine whether all crosswalks can be crossed within a specific time period based on the movement speed of the second pedestrian and the remaining distance to cross the crosswalk.

Based on the determination that the second pedestrian will not be able to cross the crosswalk within a certain time period, the processor 160 may output a message containing information about the second pedestrian through the LED display device 130 and the voice output module. there is. Additionally, the processor 160 may control the LED module 140 to emit an LED beam in an area corresponding to the current location of the second pedestrian.

Specifically, the processor 160 may generate text indicating that the second pedestrian is crossing the crosswalk, and generate a message by applying a text to speech (TTS) algorithm to the generated text. The processor 160 may output the generated message through a voice output module. Additionally, the processor 160 may display a message indicating that there is a pedestrian crossing the crosswalk through the LED display device 130.

Additionally, the processor 160 may acquire images of a plurality of objects on the crosswalk through an image sensor. The processor 160 inputs images of a plurality of objects into the artificial intelligence model to provide information about each type of a plurality of objects on the crosswalk and movement information of each type of the plurality of objects (for example, whether the movement is a normal movement). information representing ) can be obtained.

Here, the artificial intelligence model may include at least one of a convolution neural network (CNN), a recurrent neural network (RNN), and a long short term memory (LSTM). Artificial intelligence models can be learned through training data that includes images of various objects and images representing the movement of objects. Images of various objects in the learning data may be labeled with information about the type of object, and images representing the movement of the object may be labeled with information for determining whether the movement is a normal movement.

The processor 160 can identify whether the type of a specific object crossing the crosswalk is one of a vehicle or a person through information about the specific object output through the artificial intelligence model. If a specific object is identified as not being one of a vehicle or a person, the processor 160 may output a message indicating that the specific object exists within the crosswalk through the LED display device 130 and the voice module. Additionally, the processor 160 may control the LED module 140 to emit an LED beam in an area where a specific object exists.

Additionally, while a pedestrian stop signal is output by the signaling device, if a specific person is identified as being present in the crosswalk through data acquired from a human body detection sensor or/and an infrared sensor, the processor 160 determines whether the specific person is present in the crosswalk. A message indicating the presence within the device can be output through the LED display device 130 and the voice module. Additionally, the processor 160 may control the LED module 140 to emit an LED beam in an area where a specific person exists.

Additionally, the processor 160 may acquire road image data in the third area from the crosswalk through an image sensor. The processor 160 may determine whether a traffic accident has occurred through road image data in the third area.

For example, if it is determined that a first traffic accident occurred in the third area, the processor 160 provides information about vehicles present in the area where the first traffic accident occurred (e.g., vehicle number, vehicle type, etc.) through road image data. ), information about a person (eg, person's image data), and first traffic accident image data can be identified and extracted.

The processor 160 may form a database of information about the vehicle, information about the person, and first traffic accident image data. As an example, the processor 160 may obtain a hash value by applying a hash function to the time when the first traffic accident occurred, information about the vehicle, information about the person, and first traffic accident image data. The processor 160 may generate a first block based on the hash value. The first block is a block corresponding to the first traffic accident.

Here, a block refers to a bundle of valid information and may include a block hash value that serves as a block identifier, previous block hash value, Merkle root, and transaction information.

If a second traffic accident occurs after the first traffic accident, the processor 160 may generate a second block corresponding to the second traffic accident.

Specifically, if it is determined that a second traffic accident occurred in the third area, the processor 160 provides information about vehicles present in the area where the second traffic accident occurred (e.g., vehicle number, vehicle type, etc.) through road image data. ), information about a person (e.g., image data of a person), and second traffic accident image data can be identified and extracted.

The processor 160 may obtain a hash value by applying a hash function to the time when the second traffic accident occurred, information about the vehicle, information about the person, and second traffic accident image data. The processor 160 may generate the second block based on the hash value. The second block is a block corresponding to the second traffic accident.

The processor 160 can build a database related to traffic accidents in blockchain form by connecting the second block to the first block. The terminal device used by the administrator can access the blockchain-based database to check traffic accident-related information in the order in which the traffic accident occurred.

As an example of the present disclosure, the processor 160 determines whether an object of a preset size or less exists in the captured road image data, and determines whether the object of a preset size or less is similar to at least one of a plurality of pre-stored fragment images. You can judge whether or not.

If there are a plurality of objects of a preset size or smaller, the processor 160 calculates the average distance between the plurality of objects, and the object of the preset size or smaller exceeds a preset similarity with at least one of the plurality of pre-stored fragment images. It is determined that a traffic accident has occurred, and if the average distance between multiple objects falls within a preset range, it can be determined that a traffic accident has occurred.

As an example of the present disclosure, Figures 3 (a), (b), and (c) show the front, rear, and side views of a post 100 in the form of a square pillar. As shown in (a) of FIG. 3, the post 100 can output various messages through the LED display device 130.

Computer-readable recording media include all types of recording media storing instructions that can be decoded by a computer. For example, there may be Read Only Memory (ROM), Random Access Memory (RAM), magnetic tape, magnetic disk, flash memory, optical data storage device, etc.

As described above, the disclosed embodiments have been described with reference to the attached drawings. A person skilled in the art to which this disclosure pertains will understand that the present disclosure may be practiced in forms different from the disclosed embodiments without changing the technical idea or essential features of the present disclosure. The disclosed embodiments are illustrative and should not be construed as limiting.

110: memory
120: communication module
130: LED display device
140: LED module
150: sensor
160: processor

Claims (5)

Column-shaped post;
An LED module provided at the bottom of the post and emitting a light emitting diode (LED) beam toward at least one of a direction parallel to the pedestrian stop line of the crosswalk and the floor perpendicular to the pedestrian stop line;
An LED display device provided on the rear or front side of the post;
A plurality of types of sensors provided on one side of the outer surface of the post to detect information related to the surrounding environment of the post;
a voice output module provided on the other side of the post to output a message to be provided to at least one of pedestrians and drivers; and
At least one processor that controls the LED module, the LED display device, the plurality of types of sensors, and the audio output module,
The at least one processor,
Identifying whether a pedestrian exists in the first area based on the walking direction of the crosswalk based on data collected from at least one of a human body detection sensor and an infrared sensor among the plurality of types of sensors,
Based on the identification of the presence of a first pedestrian in the first area, signal information is received from a signal device installed on the crosswalk, and a control message generated based on the received signal information is sent to the LED display device and the Output through the audio output module,
The speed of a vehicle approaching the crosswalk detected through a speed sensor among the plurality of types of sensors exceeds a first threshold, and the time required for the signal information to be converted from a pedestrian stop signal to a pedestrian walking signal is Based on being below the second threshold, outputting a yellow LED beam indicating a deceleration message requesting deceleration through the LED module in a direction perpendicular to the pedestrian stop line,
The plurality of types of sensors include an illuminance sensor, a rain detection sensor, and a fog detection sensor,
The one or more processors:
Obtaining illuminance data in a second area based on the post through the illuminance sensor,
Obtaining precipitation data in the second area through the rain detection sensor,
Obtaining the amount of fog in the second area through the fog detection sensor,
Obtaining a first intermediate value by applying a first weight to the illuminance data,
Applying a second weight to the precipitation data to obtain a second intermediate value,
Obtaining a third intermediate value by applying a third weight to the fog amount,
Obtaining an LED brightness control value corresponding to a final value obtained by adding the first intermediate value, the second intermediate value, and the third intermediate value,
A smart traffic light guidance system for a crosswalk that adjusts the intensity of the LED beam emitted by the LED module and the brightness of the LED of the LED display device based on the LED brightness control value.
According to paragraph 1,
The one or more processors:
Calculate pedestrian density in the first area based on data collected from at least one of the human body detection sensor and the infrared sensor,
Calculate vehicle density in the first area based on data collected from at least one of the speed sensor and the infrared sensor,
Based on the pedestrian density and the vehicle density, i) the LED brightness of the LED module and the LED display device, ii) the intensity and thickness of the LED beam emitted through the LED module, and iii) through the audio output module. A smart traffic light guidance system for crosswalks that determines the volume of the voice message output.
According to paragraph 2,
It further includes a recognition module including at least one of a near field communication (NFC) module, a radio-frequency identification (RFID) module, and an IC module,
Based on the tagging of the recognition module by the first terminal device used by the first pedestrian, the illuminance data, the precipitation amount data, the fog amount, and the signal information are stored in the NFC module, the RFID module, and the IC module. A smart traffic light guidance system for a crosswalk, which is transmitted to the first terminal device through at least one.
According to paragraph 3,
The one or more processors:
Based on data acquired through the human body detection sensor, the infrared sensor, and the image sensor among the plurality of types of sensors, obtain the moving speed of each of the plurality of pedestrians crossing the crosswalk,
Determine whether a second pedestrian with the slowest moving speed among the plurality of pedestrians can cross the crosswalk within a specific time period corresponding to the pedestrian walking signal,
Based on the determination that the second pedestrian will not be able to cross the crosswalk within the specific time period, a message containing information about the second pedestrian is output through the LED display device and the voice output module, and the second pedestrian is output. 2 A smart traffic light guidance system for a crosswalk that controls the LED module to emit an LED beam in an area corresponding to the current location of the pedestrian.
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