Guidance system for visually impaired using audible pedestrian signal

Abstract

The present invention relates to a guidance system for the visually impaired using an audible pedestrian signal and, more particularly, to a guidance system for the visually impaired using an audible pedestrian signal, which provides accurate route guidance to the visually impaired and enables the visually impaired to safely cross a crosswalk by using the location of an audible pedestrian signal installed at a crosswalk to provide route guidance and information for crossing the crosswalk, and enables quick and effective evacuation in the event of a disaster by providing guidance according to disaster through the audible pedestrian signal.

Description

Guidance system for the visually impaired using acoustic signals

[0001] The present invention relates to a guidance system for the visually impaired using an audible signal, and more particularly, to a guidance system for the visually impaired using an audible signal, which provides accurate guidance to the visually impaired and enables them to safely cross the crosswalk by providing guidance according to disasters through the audible signal and enabling rapid and effective evacuation in the event of a disaster.

[0002] Typically, crosswalks are equipped with acoustic signals to provide pedestrian guidance to visually impaired people, as described in the patent document below.

[0003] These audible signals notify that the green light is on or the remaining time, allowing visually impaired people and others to cross the crosswalk safely.

[0004] However, in the case of visually impaired people, it is difficult to accurately determine the location, direction, and distance from the sound signal and crosswalk based on sound alone, so it can be said that they are always exposed to danger when crossing a crosswalk.

[0005] Meanwhile, with the recent advancement of navigation technology, visually impaired people can now find their way around using mobile phones and other devices, and can also receive audio guidance.

[0006] However, due to limitations in technologies such as GPS that identify the user's location, it is difficult to accurately determine the user's location while walking. In particular, if the user's location cannot be accurately determined at crosswalks, the visually impaired are exposed to the risk of accidents.

[0007] (Patent Document) Patent Publication No. 10-1420240 (registered on July 10, 2014) "Audio Signal Device for the Visually Impaired Using Urban Traffic Information System"

[0008] The present invention has been devised to solve the above problems.

[0009] The purpose of the present invention is to provide a guidance system for the visually impaired using an audible signal device, which provides accurate route guidance to the visually impaired and enables them to safely cross the crosswalk by providing route guidance and information for crossing the crosswalk to the visually impaired using the location of an audible signal device installed at a crosswalk.

[0010] The purpose of the present invention is to provide a guidance system for the visually impaired using an acoustic signal device, which transmits disaster broadcasts through an acoustic signal device and, in particular, provides guidance to the visually impaired through a user terminal to an evacuation site according to the type of disaster, thereby enabling rapid and effective evacuation in the event of a disaster.

[0011] The purpose of the present invention is to provide a guidance system for the visually impaired using an acoustic signal, which detects a visually impaired person on a crosswalk using an acoustic signal, guides the person to cross the street, and prepares for dangerous situations, thereby ensuring the safety of the visually impaired person.

[0012] The purpose of the present invention is to provide a guidance system for the visually impaired using an audible signal, which detects the location of a user terminal carried by a visually impaired person by utilizing the location of an audible signal installed at each crosswalk, and thereby provides route guidance to the visually impaired person, thereby improving the accuracy of route guidance.

[0013] In order to achieve the above-mentioned purpose, the present invention is implemented by an embodiment having the following configuration.

[0014] According to one embodiment of the present invention, a guidance system for the visually impaired using an acoustic signal according to the present invention includes an acoustic signal installed at a crosswalk to provide guidance on a crosswalk signal, a user terminal carried by a visually impaired person and providing route guidance to a set destination, and a management server managing route guidance through the acoustic signal and the user terminal, wherein the user terminal is characterized in that it provides route guidance by confirming the location and walking signal of the acoustic signal according to a signal transmitted from the acoustic signal.

[0015] According to another embodiment of the present invention, in a guidance system for the visually impaired using an acoustic signal according to the present invention, the user terminal includes a signal guidance unit that guides the visually impaired according to a signal transmitted from the acoustic signal, and the signal guidance unit includes a signal information storage module that stores location information of the acoustic signal and a crosswalk, a proximity signal transmission module that transmits a signal to the acoustic signal to notify proximity when approaching the acoustic signal on a stored route, a confirmation signal reception module that receives a signal transmitted from the acoustic signal that has received the proximity signal transmission module, a location detection module that detects the location of the acoustic signal using a signal received from the acoustic signal, and a signal location guidance module that guides the location of the acoustic signal and the crosswalk using the detected location of the acoustic signal.

[0016] According to another embodiment of the present invention, in a guidance system for the visually impaired using an acoustic signal according to the present invention, the signal guidance unit is characterized by including a signal information receiving module that receives information about a crosswalk signal from a nearby acoustic signal, and a remaining time guidance module that provides guidance on the remaining time of the pedestrian signal and the remaining time until the crosswalk according to the received signal information.

[0017] According to another embodiment of the present invention, in a guidance system for the visually impaired using an acoustic signal device according to the present invention, the signal guidance unit is characterized by including a speed information detection module that detects the user's current walking speed, a limit speed setting module that sets the user's limit walking speed, and a walking speed guidance module that guides the walking speed required to cross a crosswalk within the set limit speed range.

[0018] According to another embodiment of the present invention, in a guidance system for the visually impaired using an acoustic signal device according to the present invention, the acoustic signal device includes a disaster guidance unit that provides disaster information to the visually impaired in the vicinity, and the disaster guidance unit includes a disaster information receiving module that receives disaster information, a disaster type setting module that sets the type of disaster, a response information setting module that sets response information for each set disaster type, a disaster type classification module that classifies the type of received disaster, and a disaster response broadcasting module that transmits a guidance broadcast according to the response information according to the classified type of disaster.

[0019] According to another embodiment of the present invention, in the guidance system for the visually impaired using an acoustic signal device according to the present invention, the disaster guidance unit is characterized by including an evacuation site loading module that retrieves evacuation site information according to the type of disaster, an arrival time calculation module that calculates the arrival time to each evacuation site, and a route information transmission module that transmits route guidance information for the fastest evacuation site to the user terminal.

[0020] According to another embodiment of the present invention, in a guidance system for the visually impaired using an acoustic signal according to the present invention, the acoustic signal includes a hazard guidance unit that provides guidance on a dangerous situation for a visually impaired person present on a crosswalk, and the hazard guidance unit includes a user monitoring module that monitors signal information transmitted from a user terminal to detect a visually impaired person present on the crosswalk, a remaining time calculation module that calculates a remaining time for a walk signal of a crosswalk, a speed information reception module that receives speed information of a detected visually impaired person, a speed guidance transmission module that provides speed information required for a user to cross within the remaining time to the user terminal, an end information detection module that detects information that a walk signal has ended before the user crosses the crosswalk, a hazard information transmission module that transmits hazard information to the user terminal when the end information is detected, and a lighting delay instruction module that delays the lighting of a green signal for a vehicle passing the crosswalk until the user crosses the crosswalk.

[0021] According to another embodiment of the present invention, in a guidance system for the visually impaired using an acoustic signal according to the present invention, the user terminal includes a route guidance unit that searches for and provides an alternative route depending on whether a pedestrian signal has passed, and the route guidance unit is characterized by including a non-passage detection module that detects information that the user has failed to cross a crosswalk, an alternative route search module that searches for an alternative route to a destination other than a stored route, a signal information collection module that collects crosswalk signal information of the searched alternative route, a travel time calculation module that calculates a travel time by reflecting the collected crosswalk pedestrian signal time information, a travel time comparison module that compares the travel times of an existing route and an alternative route, and a route information guidance module that guides the user to a route with a short travel time.

[0022] According to another embodiment of the present invention, in a guidance system for the visually impaired using an acoustic signal according to the present invention, the user terminal includes a location optimization unit that optimizes the user's location information by using the location of the acoustic signal detected by the location detection module, and the location optimization unit includes a location information receiving module that receives the location information of the acoustic signal detected by the location detection module, a user location identification module that identifies the user's location based on the received location information, a location comparison module that compares the user's location identified based on the location of the acoustic signal with the user's location recognized through an existing sensor of the user terminal, a storage path modification module that modifies a stored path based on the user's location identified by the user location identification module when there is a difference in the compared locations, and a location information correction module that corrects the location information detected by the existing sensor of the user terminal based on the degree of difference based on the location comparison.

[0023] According to another embodiment of the present invention, in the guidance system for the visually impaired using an acoustic signal according to the present invention, the management server includes a signal monitoring unit that monitors the status of a signal transmitted from the acoustic signal, and the signal monitoring unit includes a fault diagnosis unit that diagnoses a fault condition for signal transmission of the acoustic signal, and an abnormality diagnosis unit that diagnoses an abnormality condition prior to occurrence of a fault, and the fault diagnosis unit includes an arrival information receiving module that receives information about proximity to the acoustic signal from a user terminal, a confirmation information receiving module that receives information about reception of a confirmation signal from the acoustic signal when the arrival of a user is received, a non-reception detection module that detects that the user terminal has reached a vicinity of a traffic signal controller but the confirmation signal has not been received, a non-reception ratio calculation module that calculates a ratio of the number of times the confirmation signal has not been received to the number of users who arrive near the acoustic signal at a certain time interval, a reference value comparison module that compares the calculated non-reception ratio with a set reference value, and when the non-reception ratio exceeds the reference value, determines that the acoustic signal is in a fault state and notifies the user of this. It is characterized in that it includes a failure notification module, and the abnormal diagnosis unit includes a failure rate storage module that accumulates and stores the failure rate calculated by the failure rate calculation module, an abnormal range setting module that sets a certain range below a reference value set by the reference value comparison module that can determine that the acoustic signal device is not a failure but is a stage just before a failure occurs, an abnormal frequency calculation module that calculates the frequency at which the failure rate of the transmission signal reaches the abnormal range for a set unit time, and an inspection instruction module that orders inspection of the acoustic signal device when the calculated abnormal frequency exceeds the set frequency.

[0024] The present invention can obtain the following effects through the combination and use of the configuration described above and the following examples.

[0025] The present invention provides accurate route guidance to the visually impaired and enables them to safely cross the crosswalk by providing route guidance and information for crossing the crosswalk using the location of an audible signal installed at a crosswalk.

[0026] The present invention has the effect of enabling rapid and effective evacuation in the event of a disaster by transmitting disaster broadcasts through an audio signal device and, in particular, providing guidance to the visually impaired through a user terminal to an evacuation site according to the type of disaster.

[0027] The present invention has the effect of ensuring the safety of visually impaired persons by detecting visually impaired persons on a crosswalk using an audible signal device, guiding them to cross the street, and preparing for dangerous situations.

[0028] The present invention has the effect of increasing the accuracy of route guidance by detecting the location of a user terminal carried by a visually impaired person by utilizing the location of an audible signal installed at each crosswalk and thereby providing route guidance to the visually impaired person.

[0029] Figure 1 is a configuration diagram of a guidance system for the visually impaired using an acoustic signal device according to one embodiment of the present invention.

[0030] Figure 2 is a block diagram showing the configuration of the sound signal device of Figure 1.

[0031] Figure 3 is a block diagram showing the configuration of the disaster guidance unit of Figure 2.

[0032] Figure 4 is a block diagram showing the configuration of the risk guidance unit of Figure 2.

[0033] Figure 5 is a block diagram showing the configuration of the user terminal of Figure 1.

[0034] Figure 6 is a block diagram showing the configuration of the signal guidance unit of Figure 5.

[0035] Figure 7 is a block diagram showing the configuration of the position optimization unit of Figure 5.

[0036] Figure 8 is a block diagram showing the configuration of the path guidance unit of Figure 5.

[0037] Figure 9 is a block diagram showing the configuration of the management server of Figure 1.

[0038] Figure 10 is a block diagram showing the configuration of the fault diagnosis unit of Figure 9.

[0039] Figure 11 is a block diagram showing the configuration of the abnormal diagnosis unit of Figure 9.

[0040] *Explanation of symbols used in drawings

[0041] 1: User terminal 11: Signal guidance unit

[0042] 12: Route guidance section 13: Location optimization section

[0043] 3: Sound signal 31: Disaster information department

[0044] 32: Risk Information Department 5: Management Server

[0045] 51: Signal monitoring section 511: Fault diagnosis section

[0046] 512: Abnormal Diagnosis Department

[0047] Hereinafter, preferred embodiments of a guidance system for the visually impaired using an acoustic signal device according to the present invention will be described in detail with reference to the attached drawings. In the following description of the present invention, if a detailed description of a known function or configuration is determined to unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Throughout the specification, when a part is said to "include" a certain component, this does not mean that other components are excluded, but rather that other components can be further included, unless specifically stated otherwise. In addition, terms such as "... part", "... module", etc. described in the specification mean a unit that processes at least one function or operation, and this can be implemented by hardware, software, or a combination of hardware and software.

[0048]

[0049] Referring to FIGS. 1 to 11, a guidance system for the visually impaired using an acoustic signal according to one embodiment of the present invention includes an acoustic signal (3) installed at a crosswalk to provide guidance on the signal of the crosswalk, a user terminal (1) carried by a visually impaired person and providing route guidance to a set destination, and a management server (5) that manages route guidance through the acoustic signal (3) and the user terminal (1).

[0050] The guidance system for the visually impaired using the above-mentioned sound signal device is to provide guidance to the visually impaired using the sound signal device (3) installed at each crosswalk and providing voice guidance for pedestrian signals, thereby providing individual guidance to the visually impaired regarding pedestrian signals at crosswalks, thereby enabling them to walk safely on crosswalks.

[0051] In particular, since the sound signal device (3) is installed at a fixed location at each crosswalk, the exact location of the user terminal (1) can be detected using the location of the sound signal device (3), and thus crosswalk and road guidance for the visually impaired can be provided, thereby ensuring the accuracy of the guidance and promoting the safety of the visually impaired.

[0052] The above user terminal (1) is a terminal carried by a visually impaired person, and various devices capable of wireless communication, such as smartphones and tablets, can be applied. An application for receiving guidance through this system can be installed on the user terminal (1), and the application can communicate with the sound signal device (3) and the management server (5) and transmit and receive various information. In particular, the user terminal (1) can receive guidance on the pedestrian signal of a crosswalk through the sound signal device (3), and can provide quick route guidance to the destination by utilizing the pedestrian signal, and can optimize the location of the user terminal (1) according to the location of the sound signal device (3). To this end, the user terminal (1) can include a signal guidance unit (11), a route guidance unit (12), and a location optimization unit (13).

[0053] The signal guidance unit (11) above is configured to guide a visually impaired person according to a signal transmitted from an acoustic signal device (3), and provides guidance to a user terminal (1) to safely and quickly cross a crosswalk by identifying the location of the acoustic signal device (3) and receiving time information of a pedestrian signal. To this end, the signal guidance unit (11) may include a signal information storage module (110), a proximity signal transmission module (111), a confirmation signal reception module (112), a location detection module (113), a signal position guidance module (114), a signal information reception module (115), a remaining time guidance module (116), a speed information detection module (117), a speed limit setting module (118), and a walking speed guidance module (119).

[0054] The above signal information storage module (110) is configured to store information about the sound signal (3), and can store information about the location of the sound signal (3) and each identification information.

[0055] The above proximity signal transmission module (111) is configured to transmit a proximity signal to the sound signal device (3) when the user terminal (1) approaches the sound signal device (3), and can transmit a proximity signal when the user terminal (1) approaches within a certain range based on the location information of the user terminal (1) itself. In addition, the proximity signal transmission module (111) can monitor the user's location through the sound signal device (3) by transmitting a signal to the sound signal device (3) at certain time intervals until the user passes the crosswalk.

[0056] The above confirmation signal receiving module (112) is configured to receive a confirmation signal transmitted from an acoustic signal device (3) that has received a proximity signal, and can transmit a wireless signal together with identification information of the acoustic signal device (3).

[0057] The above location detection module (113) is configured to detect the location of the acoustic signal device (3) using the confirmation signal received by the confirmation signal receiving module (112), and can detect the location of the acoustic signal device (3) using the transmission / reception time of the proximity signal and the confirmation signal, the direction of the signal, etc. In addition, the location of the acoustic signal device (3) can be detected using an image captured by the camera of the user terminal (1).

[0058] The above signal position guidance module (114) is configured to guide the position of the acoustic signal device (3), and can guide the user in the direction of the distance to the acoustic signal device (3) and the crosswalk based on the information detected by the position detection module (113).

[0059] The above signal information receiving module (115) is configured to receive pedestrian signal information of a crosswalk from an acoustic signal device (3) that has received a proximity signal, and can receive information such as current status and change patterns.

[0060] The above remaining time guidance module (116) is configured to guide the remaining time of the pedestrian signal, and can guide information on the current state change. For example, the remaining time guidance module (116) can guide information on the time until the pedestrian signal changes to red when the current pedestrian signal is green, or on the time until the pedestrian signal changes to green when the current pedestrian signal is red, along with state information, through the sound of the user terminal (1).

[0061] The above speed information detection module (117) is configured to detect the user's current moving speed, and can detect speed information measured through a speed sensor included in the user terminal (1) itself.

[0062] The above-mentioned limit speed setting module (118) is configured to set the maximum speed at which the user can move, and can allow the user to directly select and set the maximum speed.

[0063] The above walking speed guidance module (119) is configured to guide the movement speed required for the user to cross the crosswalk, and can guide the speed to be moved within the range set by the speed limit setting module (118) by comparing it with the current movement speed. The walking speed guidance module (119) can guide the movement speed by considering the distance remaining to the crosswalk and the status of the walk signal. For example, if the current light is green, the movement speed is guided by considering the time required to cross the crosswalk with the current signal, and if the current light is red, the movement speed is guided by considering the time until the next green light changes and the user can cross. At this time, the walking speed guidance module (119) can guide that if the user cannot cross even at the maximum speed, he / she can walk slowly until the next light changes, and if the user can cross within the maximum speed, the speed at which the user can cross is guided. For example, the walking speed guidance module (119) can guide the ratio of how slowly or quickly the user should walk compared to the current speed.

[0064] The above-mentioned route guidance unit (12) is configured to search for an alternative route using another crosswalk and provide guidance when it is confirmed that the crosswalk has not been crossed according to the guidance by the signal guidance unit (11), and to search for and provide a faster route to the destination according to the change pattern of the pedestrian signal. To this end, the above-mentioned route guidance unit (122) may include a non-passage detection module (121), an alternative route search module (122), a signal information collection module (123), a travel time calculation module (124), a travel time comparison module (125), and a route information guidance module (126).

[0065] The above-mentioned failure detection module (121) is configured to detect information that a user has failed to cross the crosswalk, and detects information that a user has failed to cross the crosswalk before the green light after signal guidance by the signal guidance unit (11) is provided, using signal information and the user's location information.

[0066] The above alternative route search module (122) is configured to search for an alternative route to the destination when it is detected that the user has failed to cross the crosswalk, and searches for an alternative route using another crosswalk.

[0067] The above signal information collection module (123) is configured to collect pedestrian signal information on an alternative route, and can collect information on the status and time of the pedestrian signal through the management server (5).

[0068] The above-mentioned travel time calculation module (124) is configured to calculate the travel time according to the route to the destination, and calculates the travel time using the collected pedestrian signal information. Accordingly, the above-mentioned travel time calculation module (124) calculates the time required to cross the crosswalk by reflecting the change pattern of the pedestrian signal for each of the existing route and the alternative route, and calculates the travel time to the destination by reflecting the calculated time.

[0069] The above travel time comparison module (125) is configured to compare the travel times of the existing route and the alternative route, and compares the travel times calculated by the travel time calculation module (124).

[0070] The above route information guidance module (126) is configured to provide guidance to the destination via a faster route, and provides guidance via a route with a shorter travel time as a result of comparison by the above travel time comparison module (125).

[0071] The above location optimization unit (13) is configured to optimize the location of the user terminal (1) by using the location information of the acoustic signal device (3), detects the user's location by using the location of the acoustic signal device (3) installed at each crosswalk, compares the detected user's location with the user's location identified by GPS or the like in the user terminal (1) itself, and modifies the route accordingly and corrects the location information. Therefore, the location optimization unit (13) can overcome the limitations of GPS or the like and more accurately detect the location of the user terminal (1), thereby enabling more accurate and safer route guidance for the visually impaired. To this end, the location optimization unit (13) may include a location information receiving module (131), a user location identification module (132), a location information comparison module (133), a storage path modification module (134), and a location information correction module (135).

[0072] The above location information receiving module (131) is configured to receive location information of the acoustic signal device (3) detected by the location detection module (113), and uses the received location information to determine the location of the user terminal (1).

[0073] The above user location identification module (132) is configured to identify the location of the user terminal (1) based on the acoustic signal device (3), and uses the distance and direction to the user terminal (1) based on the location of the acoustic signal device (3) detected by the location detection module (113) to identify the user's location.

[0074] The above location information comparison module (133) is configured to compare the user's location identified by the user location identification module (132) with the location identified by the user terminal (1) itself, and allows comparison to be made with the user's location detected through GPS, etc. included in the user terminal (1) itself.

[0075] The above storage path modification module (134) is configured to modify the movement path to the stored destination when there is a difference in the comparison result of the location, and to modify the movement path based on the location identified by the user location identification module (132), and to provide guidance to the user according to the modified path.

[0076] The above location information correction module (135) is configured to correct location information detected by the GPS of the user terminal (1) itself according to the degree of difference in location, thereby increasing the accuracy of user location detection by correcting the location information using the actual location of the acoustic signal device (3).

[0077] The above-mentioned sound signal device (3) is installed at each crosswalk and is configured to output voice guidance for the pedestrian signal of the crosswalk, and output guidance sound according to the signal information of the crosswalk. The above-mentioned sound signal device (3) transmits a confirmation signal in response to a proximity signal transmitted from the user terminal (1) and transmits status and pattern information for the corresponding pedestrian signal together. In particular, the above-mentioned sound signal device (3) can transmit disaster information such as earthquakes, floods, and fires occurring around the sound signal device (3) to the surroundings, and can recognize a visually impaired person crossing the crosswalk to provide guidance on dangerous situations. To this end, the above-mentioned sound signal device (3) may include a disaster guidance unit (31) and a danger guidance unit (32).

[0078] The above disaster guidance unit (31) is configured to provide guidance on disasters around the sound signal device (3), and can receive disaster information from a separate disaster management system and output guidance information on disasters through sound. In particular, the disaster guidance unit (31) can provide guidance by classifying response information by disaster type, and can provide route guidance to evacuation sites through a user terminal (1) carried by a visually impaired person, so that the visually impaired person can also quickly respond to disasters. To this end, the disaster guidance unit (311) may include a disaster information receiving module (311), a disaster type setting module (312), a response information setting module (313), a disaster information classification module (314), a disaster response broadcasting module (315), an evacuation site loading module (316), an arrival time calculation module (317), and a route information transmission module (318).

[0079] The above disaster information receiving module (311) is configured to receive disaster information occurring around the sound signal device (3), and receives disaster information provided from a separate public institution, local government, etc. that manages disasters.

[0080] The above disaster type setting module (312) is configured to set information on the type of disaster, and sets information on the type of disaster such as earthquake, fire, and flood.

[0081] The above response information setting module (313) is configured to set response information for disasters, and sets information on evacuation sites and action plans for each type of disaster.

[0082] The above disaster information classification module (314) is configured to classify disaster information received by the disaster information receiving module (311), and classifies the type of disaster according to the information set by the disaster type setting module (312).

[0083] The above disaster response broadcast module (315) is configured to output response information according to the type of disaster received as sound, and quickly informs the surrounding area of ​​disaster information and response information, enabling a quick response.

[0084] The above-mentioned evacuation site loading module (316) is configured to retrieve evacuation site information in the event of a disaster. Since it may be difficult for visually impaired people to evacuate on their own just by listening to the broadcast, information on evacuation sites is retrieved to provide individual route guidance to the evacuation site.

[0085] The above arrival time calculation module (317) is configured to calculate the arrival time to a shelter, and calculates the arrival time for each of a plurality of shelters.

[0086] The above path information transmission module (318) is configured to transmit path information for an evacuation site to a user terminal (1) of a visually impaired person, thereby transmitting path information for an evacuation site that takes the shortest time to reach, thereby enabling rapid evacuation.

[0087] The above-described hazard guidance unit (32) is configured to provide guidance on hazard situations for a visually impaired person on a crosswalk. When a visually impaired person carrying a user terminal (1) is crossing a crosswalk, the unit monitors the remaining time of the green light and the location of the visually impaired person to guide pedestrians, thereby enabling them to cross the crosswalk safely. In addition, the above-described hazard guidance unit (32) can ensure the safety of the visually impaired person by briefly delaying the signal for the next vehicle when the pedestrian signal of the crosswalk has changed to red but the visually impaired person has not yet crossed the crosswalk. To this end, the above-described hazard guidance unit (322) may include a user monitoring module (321), a remaining time calculation module (322), a speed information reception module (323), a speed information transmission module (324), a termination information detection module (325), a hazard information transmission module (326), and a lighting delay instruction module (327).

[0088] The above user monitoring module (321) is configured to monitor signal information transmitted from the user terminal (1), monitors signals transmitted at regular time intervals by the proximity signal transmission module (111), and can detect the location of a visually impaired person through signals transmitted from the user terminal (1).

[0089] The above remaining time calculation module (322) is configured to calculate the remaining time of the green signal, and when a visually impaired person is detected to be on a crosswalk through the user monitoring module (321), the remaining time is calculated based on the signal information of the pedestrian signal.

[0090] The above speed information receiving module (323) is configured to receive walking speed information of a visually impaired person, and receives speed information detected through the user terminal (1).

[0091] The above speed guidance transmission module (324) is configured to provide information on the speed at which a visually impaired person must move to cross a crosswalk within a green light, and calculates and provides information on the speed by considering the remaining time of the green light, the location of the visually impaired person, and the distance of the crosswalk. At this time, the speed guidance transmission module (324) can provide information on how much faster or slower the person must move than the current speed by using the speed information received by the speed information receiving module (323).

[0092] The above-mentioned termination information detection module (325) is configured to detect the termination of a green signal, calculate the remaining time of the pedestrian signal, detect the termination, and check whether a visually impaired person is present on the crosswalk.

[0093] The above risk information transmission module (326) is configured to transmit risk information to the user terminal (1) of a visually impaired person when the green signal has ended but the visually impaired person has not yet crossed the crosswalk, thereby transmitting information that the person must quickly cross the crosswalk.

[0094] The above lighting delay instruction module (327) transmits risk information to the visually impaired person through the risk information transmission module (326) and delays the vehicle signal. When a vehicle passes through the crosswalk according to the lighting of the next vehicle signal, the lighting of the vehicle signal is delayed for a certain period of time so that the visually impaired person can secure time to pass through the crosswalk.

[0095] The above management server (5) is configured to manage route guidance through an acoustic signal device (3) and a user terminal (1), and is connected to the acoustic signal device and the user terminal (1) via wired or wireless communication to transmit and receive various information. The management server (5) can store map information, road information, etc., and can collect signal information and disaster information by linking with a signal management system and a disaster management system. In particular, the management server (5) can monitor whether a confirmation signal is normally transmitted from the acoustic signal device (3) to the user terminal (1), thereby enabling smooth guidance for the visually impaired. To this end, the management server (5) can include a signal monitoring unit (51).

[0096] The signal monitoring unit (51) above is configured to monitor whether a signal is normally transmitted from the sound signal device (3) to the user terminal (1), and checks whether a confirmation signal transmitted from the sound signal device (3) to the user terminal (1) according to the proximity of the user terminal (1) is normally transmitted. When the user terminal (1) approaches the sound signal device (3), a confirmation signal is transmitted in response to the proximity signal transmitted from the user terminal (1), so the signal monitoring unit (51) monitors whether a confirmation signal is received from the sound signal device (3) when the user terminal (1) approaches the sound signal device (3). In particular, the signal monitoring unit (51) includes a fault diagnosis unit (511) that diagnoses a fault in the sound signal unit (3) when the degree to which a signal is not received from the sound signal unit (3) exceeds a set degree, and further includes an abnormality diagnosis unit (512) that determines that a fault is present just before a fault when frequent non-reception occurs even if it is not a fault state, so that preemptive measures can be taken before a fault occurs.

[0097] The above fault diagnosis unit (511) is configured to diagnose a fault condition regarding a signal transmission of an acoustic signal device (3), and may include an arrival information receiving module (511a), a confirmation information receiving module (511b), a non-reception detection module (511c), a non-reception ratio calculation module (511d), a reference value comparison module (511e), and a fault notification module (511f).

[0098] The above-mentioned arrival information receiving module (511a) is configured to receive information that the user terminal (1) has reached the vicinity of the sound signal device (3), and is configured to receive information about approaching the sound signal device (3) according to the location information of the user terminal (1), or may receive information about a proximity signal being transmitted by the proximity signal transmission module (111) of the user terminal (1).

[0099] The above confirmation information receiving module (511b) is configured to receive information to confirm whether a signal has been received from an acoustic signal device (3) after the user terminal (1) approaches, and receives information on whether a signal for vehicle location detection and a signal regarding signal information have been received.

[0100] The above-mentioned non-receipt detection module (511c) is configured to detect information that a signal from an acoustic signal device (3) has not been received, and detects a vehicle in which information that a vehicle is approaching an acoustic signal device (3) has been received by the arrival information receiving module (511a), but a signal confirming that a signal has been received from the acoustic signal device (3) has not been received by the confirmation information receiving module (511b).

[0101] The above-mentioned non-received ratio calculation module (511d) is configured to calculate the ratio of non-received signals from the sound signal generator (3), and calculates the non-received ratio as the ratio of the number of user terminals (1) that do not receive signals to the number of user terminals (1) that approach the sound signal generator (3) in a certain time unit.

[0102] The above reference value comparison module (511e) is configured to compare the non-received rate calculated by the non-received rate calculation module (511d) with a set reference value, and the non-received rate that can be judged as a failure of the sound signal device (3) can be set as a reference value so that a comparison with the reference value can be made at each unit time when the non-received rate is calculated.

[0103] The above failure notification module (511f) is configured to notify a failure of the acoustic signal device (3). If the non-reception ratio exceeds a reference value, it can determine that it is a failure and notify this. In addition, it can notify the failure information together with the identification information of the acoustic signal device (3) so that a quick response to the failure can be made.

[0104] The above abnormal diagnosis unit (512) is configured to diagnose an abnormal state regarding the signal transmission of the acoustic signal device (3), and by diagnosing and notifying an abnormal state immediately before a failure in advance, it enables preemptive measures to be taken before a failure occurs. To this end, the above abnormal diagnosis unit (512) may include a non-receipt ratio storage module (512a), an abnormality range setting module (512b), an abnormality frequency calculation module (512c), and an inspection instruction module (512d).

[0105] The above-mentioned non-received ratio storage module (512a) is configured to accumulate and store the ratio of non-received signals from the sound signal generator (3), and to store the non-received ratio calculated by the non-received ratio calculation module (511d).

[0106] The above-mentioned abnormal range setting module (512b) is configured to set a range for the non-reception ratio that can be determined as an abnormal state of the sound signal generator (3), and can set a certain range below the reference value determined as a failure state by the reference value comparison module (511e) as an abnormal range.

[0107] The above abnormal frequency calculation module (512c) is configured to calculate the frequency at which the non-receipt rate reaches an abnormal range, and can calculate the number of times the non-receipt rate calculated in a certain time unit reaches an abnormal range in a certain time unit.

[0108] The above inspection instruction module (512d) is configured to instruct inspection of the sound signal device (3), and if the abnormal frequency calculated by the abnormal frequency calculation module (512c) exceeds the set reference value, it determines that the sound signal device (3) is in an abnormal state and instructs inspection.

[0109]

[0110] In the above, the applicant has described various embodiments of the present invention, but such embodiments are only examples of implementing the technical idea of ​​the present invention, and any change or modification that implements the technical idea of ​​the present invention should be interpreted as falling within the scope of the present invention.

Claims

An audible signal installed at a crosswalk to provide guidance on the crosswalk signal, A user terminal that is carried by a visually impaired person and provides directions to a set destination, Includes a management server that manages route guidance through the above-mentioned sound signal device and user terminal, A guidance system for the visually impaired using an acoustic signal device, characterized in that the user terminal provides route guidance by checking the location and walking signal of the acoustic signal device according to the signal transmitted from the acoustic signal device. In the first paragraph, the user terminal It includes a signal guidance unit that guides the visually impaired person according to the signal transmitted from the above-mentioned sound signal device, The above signal guidance section, A guidance system for the visually impaired using an acoustic signal, characterized by comprising: a signal information storage module that stores location information of an acoustic signal and a crosswalk; a proximity signal transmission module that transmits a signal to the acoustic signal to notify proximity when approaching the acoustic signal on the stored route; a confirmation signal reception module that receives a signal transmitted from the acoustic signal that has received the proximity signal transmission module; a location detection module that detects the location of the acoustic signal using the signal received from the acoustic signal; and a signal location guidance module that guides the location of the acoustic signal and the crosswalk using the detected location of the acoustic signal. In the second paragraph, the signal guide unit A guidance system for the visually impaired using an acoustic signal, characterized by including a signal information receiving module that receives information about a crosswalk signal from a nearby acoustic signal, and a remaining time guidance module that provides guidance on the remaining time of the pedestrian signal and the remaining time until the crosswalk based on the received signal information. In the third paragraph, the signal guide unit A guidance system for the visually impaired using an acoustic signal device, characterized by including a speed information detection module that detects the user's current walking speed, a limit speed setting module that sets the user's limit walking speed, and a walking speed guidance module that guides the walking speed required to cross a crosswalk within the set limit speed range. In the first paragraph, the sound signal device Includes a disaster information section that provides disaster information to visually impaired people in the vicinity. The above disaster information department is, A guidance system for the visually impaired using an audio signal device, characterized by including a disaster information receiving module for receiving disaster information, a disaster type setting module for setting the type of disaster, a response information setting module for setting response information for each set disaster type, a disaster type classification module for classifying the type of received disaster, and a disaster response broadcast module for transmitting guidance broadcast according to the response information according to the classified type of disaster. In paragraph 5, the disaster guidance department A guidance system for the visually impaired using an acoustic signal device, characterized by including an evacuation site loading module that retrieves evacuation site information according to the type of disaster, an arrival time calculation module that calculates the arrival time to each evacuation site, and a route information transmission module that transmits route guidance information for the fastest evacuation site to the user terminal. In the first paragraph, the sound signal device Includes a hazard guidance section that provides guidance on hazardous situations for visually impaired people on crosswalks. The above risk information section is: A guidance system for the visually impaired using an audible signal device, characterized in that it includes a user monitoring module that monitors signal information transmitted from a user terminal to detect a visually impaired person on a crosswalk, a remaining time calculation module that calculates the remaining time for a pedestrian signal of a crosswalk, a speed information reception module that receives speed information of a detected visually impaired person, a speed guidance transmission module that provides speed information required for a user to cross within the remaining time to a user terminal, an end information detection module that detects information that a pedestrian signal has ended before the user crosses the crosswalk, a risk information transmission module that transmits risk information to the user terminal when the end information is detected, and a lighting delay instruction module that delays the lighting of a green signal for a vehicle passing through the crosswalk until the user crosses the crosswalk. In the fourth paragraph, the user terminal Includes a route guidance unit that searches for and provides an alternative route depending on whether a pedestrian signal is passed. The above route guidance section, A guidance system for the visually impaired using an acoustic signal device, characterized by including a failure detection module that detects information that a user has failed to cross a crosswalk, an alternative route search module that searches for an alternative route to a destination other than a saved route, a signal information collection module that collects crosswalk signal information of the searched alternative route, a travel time calculation module that calculates a travel time by reflecting the collected crosswalk pedestrian signal time information, a travel time comparison module that compares the travel times of an existing route and an alternative route, and a route information guidance module that guides the user to a route with a short travel time. In the second paragraph, the user terminal It includes a location optimization unit that optimizes the user's location information by using the location of the acoustic signal detected by the location detection module. The above location optimization unit is, A guidance system for the visually impaired using an acoustic signal device, characterized in that it comprises a location information receiving module that receives location information of an acoustic signal device detected by the location detection module, a user location identification module that identifies a user's location based on the received location information, a location comparison module that compares the user's location identified based on the location of the acoustic signal device with the user's location recognized through an existing sensor of a user terminal, a storage path modification module that modifies a stored path based on the user's location identified by the user location identification module when there is a difference in the compared locations, and a location information correction module that corrects location information detected by an existing sensor of a user terminal based on the degree of difference based on the location comparison. In the second paragraph, the management server Includes a signal monitoring unit that monitors the status of a signal transmitted from an acoustic signal generator, The above signal monitoring unit, It includes a fault diagnosis unit that diagnoses a fault condition in the signal transmission of the acoustic signal device, and an abnormality diagnosis unit that diagnoses an abnormal condition prior to the occurrence of a fault. The above fault diagnosis unit, A arrival information receiving module that receives information about an approach to an acoustic signal from a user terminal, a confirmation information receiving module that receives information about a confirmation signal being received from the acoustic signal when the user's arrival is received, a non-reception detection module that detects that the user terminal has reached the vicinity of a traffic signal controller but the confirmation signal has not been received, a non-reception ratio calculation module that calculates the ratio of the number of times the confirmation signal has not been received to the number of users who reach the vicinity of the acoustic signal at a certain time unit, a reference value comparison module that compares the calculated non-reception ratio with a set reference value, and a failure notification module that determines that the acoustic signal is in a broken state and notifies the user when the non-reception ratio exceeds the reference value. The above abnormal diagnosis section is, A guidance system for the visually impaired using an acoustic signal device, characterized in that it includes a non-received rate storage module that accumulates and stores the non-received rate calculated by the non-received rate calculation module, an abnormal range setting module that sets a certain range below a reference value set by the reference value comparison module that can determine that the acoustic signal device is not broken but is at a stage just before a breakdown occurs, an abnormal frequency calculation module that calculates the frequency at which the non-received rate of the transmission signal reaches the abnormal range for a set unit time, and an inspection instruction module that orders inspection of the acoustic signal device when the calculated abnormal frequency exceeds the set frequency.

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