KR102563075B1 - Bus stop system for blind people - Google Patents

Abstract

A bus stop system for the visually impaired according to the present invention includes a bus having a bus terminal in which route numbers and identification numbers are stored; a bus stop equipped with a braille information pad displaying the route number and a boarding button generating boarding request information by pressing; A route guidance module that determines the estimated time of arrival of the bus at the bus stop based on the location information of the bus terminal, generates an arrival guidance notification including the estimated time of arrival, and outputs the notification through a speaker located at the bus stop. and a central control server including a boarding request module that detects the boarding request information generated after the time point of outputting the arrival information notification and provides the boarding request module to the bus terminal.
According to the bus stop system for the visually impaired of the present invention, the visually impaired, who have difficulty securing the right to move, are notified of the arrival of the bus they want and request to board the bus through the boarding button provided at the bus stop. It has the effect of relieving the inconvenience of daily life and enabling safe getting on and off the bus.

Description

Bus stop system for blind people}

The present invention relates to a bus stop system for the visually impaired, and more specifically, a new and advanced bus that enables the visually impaired to conveniently use the bus to help improve the mobility of the transportation vulnerable. It is about the station system.

In general, at a bus stop, a digital information board of BIS (Bus Information System) is installed that provides real-time operation information on the buses operating at the stop. is guiding

Therefore, passengers using the bus wait for the corresponding bus after checking simple operation information such as route information including the current location of buses operating at the corresponding destination and estimated time of arrival at the digital information board of the corresponding bus stop.

On the other hand, at the bus stop equipped with BIS, a safety zone is separately provided to facilitate boarding of the bus by visually impaired people.

However, since the driver of the bus operating the bus stop cannot know in advance whether or not to board in the safety zone, it is inconvenient to have to stop sequentially in both the safety zone and the boarding zone where general passengers board. There is a problem in that it takes a lot of time to board passengers at a bus stop.

In addition, even from the point of view of the visually impaired person located in the safety zone, there is an inconvenience of waiting for the next bus when the driver of the bus to board is not able to identify the visually impaired person and cannot stop and continues to operate.

On the other hand, even if the existing BIS system is installed in a safety zone, there is a problem that it is difficult for visually impaired people to use it due to a lack of auditory and tactile guidance methods.

In order to solve this problem, Korean Patent Publication No. 10-2019-0050909 discloses a 'bus guidance service for the visually impaired'.

The prior art relates to a bus guidance service for the visually impaired, and a bus to which a beacon is attached generates a signal to provide a smartphone application with information that it has arrived at a stop. When a beacon is detected and a signal is received through a smartphone application, the value of the beacon ID obtained by the user through the NFC tag at the bus stop is compared to the value selected by the user. By making it easy to identify information, it is difficult for the visually impaired to receive bus information when the electronic display board or bus information terminal installed at the stop is broken, the network status of the device is unstable, and many buses depart from all stops. This is to solve the problem of not knowing which bus arrives first when driving and not knowing which bus is in front when several buses arrive.

However, since the prior art is configured in conjunction with a smart phone, it is difficult for visually impaired people who do not use a smart phone to use it for general purposes.

Therefore, in order to solve the above-mentioned problems, it is necessary to develop a new and advanced bus stop system that can be linked with the bus stop and the bus, and can perform bus arrival guidance to the visually impaired and at the same time perform boarding reservation. This situation is emerging.

Korean Patent Publication No. 10-2019-0050909

The main object of the present invention is to provide route information and arrival notification of a bus in the form of braille and voice to the visually impaired and conveniently perform boarding reservation.

Another object of the present invention is to notify passengers who use the bus to vacate the seats for passengers with reduced transportation.

Another object of the present invention is to increase the rigidity of a braille guidance pad providing route numbers.

In order to achieve the above object, a bus stop system for the visually impaired according to the present invention includes a bus having a bus terminal in which route numbers and identification numbers are stored; a bus stop equipped with a Braille guide pad displaying the route number in Braille and a boarding button generating boarding request information by pressing; A route guidance module that determines the estimated time of arrival of the bus at the bus stop based on the location information of the bus terminal, generates an arrival guidance notification including the estimated time of arrival, and outputs the notification through a speaker located at the bus stop. and a central control server including a boarding request module that detects the boarding request information generated after the time point of outputting the arrival information notification and provides the boarding request module to the bus terminal.

Furthermore, the bus includes a sensor installed in a seat for persons with reduced mobility to determine whether the passenger is seated, and the bus terminal determines, via the sensor, whether or not the seat for persons with reduced mobility is seated, and whether or not the passenger is seated. It is characterized in that it comprises a boarding concession guidance module for controlling the output of a seat concession notification through a speaker installed in the bus according to.

In addition, the braille guide pad includes 90 to 99 parts by weight of a base made of a hard material and 1 to 10 parts by weight of a stiffness reinforcing agent including hydroxyapatite and aluminum oxide, wherein the stiffness reinforcing agent , 65 to 80 parts by weight of water, 5 to 15 parts by weight of hydroxyapatite, 5 to 15 parts by weight of aluminum oxide powder, and 1 to 5 parts by weight of polyglyceryl-10 oleate A first material preparation step of preparing a first material by mixing parts; preparing a second material by mixing 75 to 90 parts by weight of the first material with 5 to 20 parts by weight of acrylamide and 0.5 to 5 parts by weight of methylene bisacrylamide; After mixing 90 to 95 parts by weight of the second material with 1 to 5 parts by weight of ammonium persulfate and 1 to 5 parts by weight of tetramethylethylenediamine (N,N,N',N'-tetramethylethylenediamine), A third material preparation step of preparing a third material by ball-mill mixing for 40 minutes to 40 minutes; A fourth material preparation step in which 80 to 95 parts by weight of the third material and 5 to 20 parts by weight of potassium hydroxide are mixed and stirred at a speed of 500 to 1,000 rpm for 5 to 15 minutes to prepare a fourth material. ;

The fourth material is dried at 50 to 80 ° C. for 20 to 30 hours, sintered at 1,300 to 1,600 ° C. for 1 to 3 hours, and then pulverized in the form of powder to complete the rigidity enhancer; do.

According to the bus stop system for the visually impaired of the present invention,

1) Relieves the inconvenience of daily life by allowing the visually impaired, who have difficulty in securing the right to move, to receive notification of the arrival of the bus they want and request to board the bus through the boarding button provided at the bus stop. and make it possible to get on and off the bus safely,

2) If a request for boarding by a visually impaired person is identified, but there is no empty space in the seat for the disabled on the bus (when a passenger who is not a person with reduced mobility is seated), a notice will be given to the passenger to give up their seat to the person with a disability (blind person). So that the transportation vulnerable can use the bus comfortably and secure seats,

3) It has the effect of minimizing the possibility of incorrect information provision by increasing the rigidity of the braille guidance pad and preventing abrasion.

1 is a conceptual diagram of a bus stop system for the visually impaired of the present invention.
Figure 2 is a conceptual diagram showing a bus stop equipped with a braille guide pad of the present invention.
Figure 3 is a block diagram showing the configuration of the central control server of the present invention.
Figure 4 is a conceptual view showing a transportation weak magnet including a sensor.
5 is a block diagram showing the configuration of a bus terminal;
6 is a conceptual diagram showing a boarding platform of the present invention.
7 is a conceptual diagram showing a boarding assistance structure according to the present invention;
Figure 8 is a flow chart showing the steps of manufacturing the stiffness reinforcing agent of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each drawing indicate like elements.

1 is a conceptual diagram of a bus stop system for the visually impaired according to the present invention, and FIG. 2 is a conceptual diagram showing a bus stop equipped with a braille guide pad according to the present invention.

1 and 2, the bus stop system for the visually impaired of the present invention is characterized in that it includes a bus 1, a bus stop 20, and a central control server 30.

Here, the bus 1 may preferably be a low-floor bus that the disabled can conveniently board, and a plurality of seats are formed inside the bus 1 to allow passengers to sit, and furthermore, such a bus 1 is preferably Including a seat for transportation disadvantages (2) inside, boarding can be considered for those who have difficulty using public transportation due to old age, disease, disability, pregnancy, accompanying infants/young children, etc.

In addition, the bus terminal 10 is provided inside the bus 1. Preferably, the bus terminal 10 is provided near the driver's seat of the bus 1 and can be referred to as a kind of bus server, and the bus terminal 10 The route number and identification number of the bus 1 are stored and can be used to identify and locate the bus 1, and further, through the bus terminal 10, the number of passengers boarding the bus 1 In addition to recognizing boarding and alighting, the bus terminal 10 is equipped with a communication function and can communicate with the central control server 30 .

Furthermore, the bus terminal 10 is equipped with a display and a speaker to output boarding request information, as well as to control outputs such as door opening of the bus 1 and notification of arrival at a bus stop by manipulation of a driver. The bus terminal 10 may most simply be a driver's tablet PC installed near the driver's seat.

The bus stop 20 is provided with a braille information pad 21, where the route number of the bus 1 stopping at the corresponding bus stop 20 is displayed in braille so that the visually impaired can It goes without saying that the route number of the bus 1 boarding the bus stop 20 can be grasped.

Furthermore, the braille guide pad 21 provides not only the route number of the bus 1 but also route information of the corresponding bus 1, that is, which route the bus 1 stopping at the corresponding bus stop 20 passes, and Of course, information on the direction to which the bus stop 20 is going may be further displayed on the braille guide pad 21 in Braille. Such a braille guide pad 21 may be one in which braille is embossed to indicate the route number and route information of the bus 1 according to the braille notation.

Since the location where the braille guide pad 21 is formed is not limited here, the braille guide pad 21 may be attached to one wall of the structure of the bus stop 20 like a bus route guide map, or the bus stop 20 It is also possible that the braille guide pad 21 is inserted, attached, or bound to the bottom or one wall of the device.

Here, there is no particular restriction on the material of the braille information pad 21, and there are no restrictions on the thickness and material of the braille pad as long as the route number and route information of the bus 1 can be guided to the visually impaired through braille. . However, it goes without saying that the braille guide pad 21 is preferably made of a hard material and not easily worn while having sufficient rigidity. A detailed configuration thereof will be described later.

Alternatively, in a state where a separate structure for the visually impaired is provided at the bus stop 20, it is also possible to form a braille guide pad 21 on the structure, the configuration of which will be described later.

In addition, a boarding button 22 is provided on one side of the bus stop 20, and the boarding button 22 provides a function of generating boarding request information for the bus 1 by a pressing operation by a visually impaired person. The boarding button 22 may be provided on one side of a wall of the bus stop 20 or on one side of a pillar. However, most preferably, it is also possible to form the boarding button 22 on the bus stop 20 in a state where a separate structure for the visually impaired is provided in the bus stop 20 as described above. This will be described later together with FIG. 7 .

When the boarding button 22 is provided in this way, the boarding request information generated through the boarding button 22 must be transmitted to the central control server 30, so the structure for the visually impaired, which will be described later, preferably includes a communication unit to the central control server Communication with (30) may be possible.

In addition, a speaker 23 is provided on one side of the bus stop 20, and it is possible to output an arrival information notification including an estimated arrival time of a specific bus 1 through the speaker 23 as a medium. Here, the position of the speaker 23 is not limited, and most preferably, the speaker 23 can be mounted on the structure for the visually impaired.

The central control server 30 is capable of communicating with the bus terminal 10, and determines the expected arrival time of the corresponding bus 1 based on the location information of the corresponding bus 1 through the bus terminal 10 to determine the bus stop. The arrival information notification is provided through the speaker 23 located in (20), and furthermore, the boarding request information generated as the blind person who has received the arrival information notification performs a pressing operation on the boarding button 22 is transmitted to the bus terminal ( 10) to inform the inside of the bus 1 that a visually impaired person is waiting to board the bus 1 at the bus stop 20.

The central control server 30 may be provided at each bus stop 20, or a gateway for communication is provided at each bus stop 20, and the gateway provided at each bus stop 20 is separately provided. It is also possible to be connected to the control server 30 based on communication.

This central control server 30 refers to hardware having a CPU and storage means in a state of having a communication unit and transmission means for transmitting communication and information, and a series of modules to be described later by software to be executed in this CPU. And its specific function can be derived.

A program that can be executed in the central processing unit (CPU) and storage means such as memory and hard disk is installed on the hardware basis, that is, software is installed to execute this software. A series of specific configurations for this software will be described later as 'modules', 'parts', and 'interfaces' as constituent units.

At this time, the central control server 30 temporarily and / or permanently stores the signals (or data) processed therein (RAM: Random Access Memory, not shown) and ROM (ROM: Read-Only Memory, not shown), may include a processor.

In addition, the central control server 30 may be implemented in the form of a system on chip (SoC) including at least one of a graphic processing unit, RAM, and ROM.

The processor may include one or more cores (not shown) and a graphic processor (not shown) and/or a connection path (eg, a bus) for transmitting and receiving signals to and from other components.

The memory may store programs (one or more instructions) for executing and controlling modules or parts to be described later. Programs stored in the memory may be divided into a plurality of modules according to functions.

Steps of a method or algorithm described in connection with an embodiment of the present invention may be implemented directly in hardware, implemented in a software module executed by hardware, or implemented by a combination thereof. A software module may include random access memory (RAM), read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, hard disk, removable disk, CD-ROM, or It may reside in any form of computer readable recording medium well known in the art to which the present invention pertains.

That is, the components of the present invention may be implemented as a program (or application) to be executed in combination with a computer, which is hardware, and stored in a medium. Components of the present invention may be implemented as software programming or software elements, and similarly, embodiments may include various algorithms implemented as data structures, processes, routines, or combinations of other programming constructs, such as C, C++ , Java (Java), can be implemented in a programming or scripting language such as assembler (assembler). Functional aspects may be implemented in an algorithm running on one or more processors.

The configuration of such a 'module' or 'unit' or 'interface' refers to a configuration of hardware such as software or FPGA or ASIC executed via CPU and memory in a state installed and stored in the storage means of the main server 2 do. At this time, the configuration of 'module' or 'unit' or 'interface' is not limited to hardware, and may be configured to be in an addressable storage medium or configured to reproduce one or more processors. As an example, 'module' or 'part' or 'interface' refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, and properties. , procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables.

Functions provided by these 'modules' or 'units' or 'interfaces' may be combined into a smaller number of components and 'units' or 'modules', or may be combined into additional components and 'units' or 'modules'. can be further separated.

Hereinafter, detailed configurations and functions thereof will be described based on such a macroscopic configuration.

Figure 3 is a block diagram showing the configuration of the central control server of the present invention.

Referring to FIG. 3 , the central control server 30 of the present invention may include a route guidance module 31 and a boarding request module 32.

The route guidance module 31 identifies the expected arrival time of the bus 1 at the bus stop 20 based on the location information of the bus terminal 10, generates an arrival guidance notification including the expected arrival time, and It performs the function of outputting through the speaker 23 located at the station 20.

Here, in order to determine the expected arrival time, location information is received from the bus terminal 10 while connected to the bus terminal 10 based on communication, and the location information of the bus terminal 10 and the location of the bus stop 20 are provided. By calculating the distance to , based on the distance, the estimated arrival time expected to arrive at the bus stop 20 based on the departure time from the current location information of the bus 1 is identified. Since this is the same as the function of calculating the estimated time of arrival through the identification of the path of the conventional navigation, detailed description thereof will be omitted.

Furthermore, when the estimated time of arrival is identified in this way, an arrival information notification including the estimated time of arrival is generated. At this time, the estimated time of arrival and the current time are preferably compared to calculate the remaining time until the estimated time of arrival based on the current time, An arrival guide notification including the route number of the bus 1 and the remaining time may be generated.

For example, an arrival announcement is ‘Bus 1000 will arrive in 3 minutes. If you want to board, please press the boarding button.' can

The arrival information notification thus generated is output through the speaker 23 located at the bus stop 20 in the form of a sound, and thus, it is possible to prevent visually impaired people who cannot receive the notification related to the arrival of the bus 1 with visual information. It is possible to receive notification of arrival information in the form of

In this way, when the arrival information notification is transmitted through the speaker 23, the visually impaired person who confirms this can perform a pressing operation on the boarding button 22 provided at the bus stop 20 described above. At this time, the boarding button Boarding request information is generated by the pressing operation of (22) and transmitted to the central control server 30, and the central control server 30 identifies the boarding request information and provides the boarding request module 32 to the bus terminal 10. ), it is possible to convey to the bus terminal 10 that the visually impaired person is waiting for the bus 1 at the bus stop 20.

Here, the boarding request module 32 performs a function of identifying boarding request information generated after the arrival information notification output point and providing the information to the bus terminal 10 . Here, the fact that the ride request information is generated after the arrival information notification is output can be said to mean that the blind person who heard the arrival information notification of the specific bus 1 requested to board the corresponding bus 1 by pressing the boarding request information.

Therefore, when the ride request information is generated in this way, the ride request information is transmitted to the bus terminal 10 of the bus 1 corresponding to the arrival information notification generated immediately before the ride request information, so that the driver of the bus 1 It is possible to identify ride request information and provide notification to stop at the bus stop 20 for the visually impaired.

To this end, preferably, generation of ride request information within a predetermined request time (eg, 1 minute, 3 minutes, 5 minutes) after generation of the arrival information notification can be identified as the ride request information for the corresponding bus 1, or It is also possible to generate ride request information for each bus 1 by separately providing a boarding button 22 for each bus 1 stopping at the corresponding bus stop 20 .

In this case, the bus stop 20 is provided with boarding buttons 22 equal to the number of buses 1 stopped at the corresponding bus stop 20 (a plurality of boarding buttons 22 are provided) and boarding buttons 22 Braille is provided on one side of the bus 1, so that the route number of the bus 1 corresponding to the boarding button 22 can be guided to the visually impaired. Furthermore, when the arrival information notification is generated, the visually impaired person presses the boarding button 22 corresponding to the bus 1 they wish to board, and when the boarding button 22 is pressed, boarding request information is generated to generate the arrival information notification. The boarding request information can be transmitted to the bus terminal 10 of the bus 1.

At this time, in the case of identification of the individual bus 1, of course, it can be made based on the route number and identification number stored in the above-described bus terminal 10, and the estimated time of arrival and generation of the arrival information notification through the identification of the bus terminal 10 ) can be made based on the location information, route number, and identification number, so the ride request information can be transmitted to the bus terminal 10 without confusion about each bus 1.

This boarding request information can be output through a display provided in the bus terminal 10 or provided to the bus terminal 10 in the form of sound. There is an effect of enabling the driver of the bus 1 to detect and respond to the boarding of the visually impaired by outputting a notification such as '.

According to the bus stop system for the visually impaired of the present invention, the visually impaired, who have difficulty securing the right to move, can receive a notification of the arrival of the bus 1 they want and request to board the bus 1. It has the effect of eliminating the inconvenience of daily life and enabling safe getting on and off the bus (1).

4 is a conceptual diagram showing a seat for the disabled including a sensor, and FIG. 5 is a block diagram showing the configuration of a bus terminal.

Referring to FIGS. 4 and 5 , the sensor 3 is included in the seat 2 installed inside the bus 1 so that it is possible to determine whether a passenger is seated in the seat 2 for the disabled. At this time, the sensor 3 may be a piezoelectric element, and this sensor 3 is connected to the bus terminal 10 through communication to generate detection information according to whether a passenger is seated, and transmits the detection information to the bus terminal ( 10), so that the driver of the bus 1 can grasp that the passenger is sitting in the seat 2 for the transportation disadvantage.

Furthermore, the bus terminal 10 further includes a boarding concession guidance module 11 to determine whether or not a person is seated in the seat for the disabled via the sensor 3, and the speaker installed in the bus 1 according to whether or not the seat is occupied. It performs the function of controlling the output of seat concession notification through (23).

Here, the seat concession notification can be repeatedly output inside the bus 1 through the speaker 23 installed inside the bus 1, and this seat concession notification can be pre-stored, It may be a voice guidance comment such as, 'Please vacate the seats for the transportation disadvantaged'.

Therefore, preferably, as the boarding request information is generated and provided to the bus terminal 10, it is determined through the sensor 3 whether the seat 2 for the disabled is seated, and the output of the seat concession notification is controlled according to whether the seat is occupied or not. is to do

Since the bus terminal 10 may be a tablet PC installed near the driver's seat of the bus 1 in the above description, it is connected to the speaker 23 or sensor 3 installed inside the bus 1 through communication, and the speaker 23 and the sensor 3 can be controlled, so detailed driving control for the devices provided inside the bus 1 can be integrated through the bus terminal 10. Output control may also be performed via the bus terminal 10.

According to this configuration, if the boarding request of the visually impaired is identified, but there is no empty space in the seat for the disabled (2) inside the bus (1) (when a passenger other than the disabled is sitting), the passenger is the disabled (blind) It is possible to provide a notification to give up a seat to the person, so there is an advantage in that it is possible to perform comfortable use of the bus 1 and secure a seat for the transportation vulnerable.

Furthermore, in addition to determining seat availability and requesting seat concession through the configuration of the boarding concession information module 11, the bus terminal 10 actually outputs a seat concession notification through the seat securing identification module 12, (2) can be checked to see if it is empty.

Here, the seat security determination module 12 performs a function of recognizing whether a seat for a seat for persons with reduced mobility (2) is seated or not and generating seat security information according to non-seating for a seat for persons with reduced mobility (2) after outputting a seat concession notification. do.

Therefore, after controlling the output of the seat concession notification through the boarding concession guidance module 11, the sensor 3 re-determines whether the seat 2 is seated or not to determine whether the seat is not seated. Thereafter, when the unoccupied seat for the seat for the transportation disadvantage 2 is identified, seat securing information is generated and the function is transmitted to the central control server 30 .

In other words, a seat concession notification is output through the boarding concession information module 11, and it is determined whether the passengers have actually yielded to the seats for those with reduced mobility (2), and when the seats for those with reduced mobility (2) are vacant (the seats for those with reduced mobility ( In case the non-seated seats in 2) are identified), seat reservation information indicating that a seat has been secured is created.

Furthermore, when the seat securing information is generated in this way, the central control server 30 creates a seat securing notification according to the generation of the seat securing information through the seat securing notification module 33, which may be included as an additional configuration, to the bus stop 20 It can be output through a speaker 23 located at .

Here, the notification for securing a seat is ‘Securing reserved seats for bus XXX has been completed. It could be a message like, “Have a comfortable ride.” Therefore, when the seat securing information is transmitted to the central control server 30, the corresponding seat securing notification is output through the speaker 23 located at the bus stop 20, so that the visually impaired can board the bus 1 they want to board. There is a feature that enables a more comfortable use of the bus (1) by providing guidance on securing seats for the disabled (2).

6 is a conceptual diagram showing a boarding platform of the present invention, and FIG. 7 is a conceptual diagram showing a boarding assistance structure of the present invention.

6 and 7, a plurality of boarding platforms 24 may be formed in the bus stop 20 of the present invention. means a waiting area. That is, the fact that a plurality of boarding platforms 24 are included means that there are several spaces where visually impaired people can wait at the bus stop 20 .

In addition, it is possible for the bus 1 to stop separately for each boarding platform 24, which is referred to the divisional stop of the bus 1 for each boarding platform 24 in the conventional wide-area transfer transportation center, etc., so a detailed description is omitted. , Therefore, different buses 1 are stopped at each boarding platform 24, so that the visually impaired person can wait for the bus 1 at the boarding platform 24 where the bus 1 to board is stopped. is to make it possible

To this end, it can be said that it is basic to determine which bus 1 stops at the corresponding boarding platform 24. To this end, each boarding platform 24 is provided with a boarding auxiliary structure 25 to Through this, the visually impaired can determine which bus 1 stops at the corresponding boarding platform 24 and use it.

The boarding assistance structure 25 includes the above-described braille guidance pad 21, the boarding button 22, and the speaker 23, and includes the braille guidance pad 21, the boarding button 22, and the speaker 23. ), components of the present invention that should be provided in the bus stop 20 may be provided in the boarding assistance structure 25.

Therefore, the route number of the bus 1 stopping at the corresponding boarding platform 24 may be provided in braille form through the braille information pad 21, and an arrival information notification may be output through the speaker 23, Boarding request information for the corresponding bus 1 can be generated through the boarding button 22 .

At least one boarding assistance structure 25 may be provided on each boarding platform 24, so that a visually impaired person using the boarding platform 24 can easily find and use the boarding assistance structure 25. .

According to the configuration of the boarding assistance structure 25 as described above, the braille guidance pad 21, the boarding button 22, and the speaker 23 are not dispersed within the bus stop 20 but integrated into the boarding assistance structure 25. If the visually impaired can only grasp the position of the boarding aid structure 25, the braille guide pad 21, the boarding button 22, and the speaker 23 can be used at the same time so that the visually impaired can use the bus stop 20 This is to maximize convenience.

Furthermore, in the present invention, the route number of the bus 1 stopping at the bus stop 20 is guided to the visually impaired through the braille guide pad 21, where the braille guide pad 21 uses braille notation as described above. This means that braille is exposed in embossed form to indicate the route number and route information of the bus 1 according to .

At this time, as it is necessary to repeatedly touch and contact the braille guide pad 21 to receive route information, there is a high possibility that the braille guide pad 21 may be worn out or damaged by external force, and the bus stop 20 is also located outdoors In many cases, when an external force or an external foreign object repeatedly hits the braille guide pad 21, there is a possibility that the braille guide pad 21 is damaged and cannot provide accurate route number and route information.

To prevent this, the braille guide pad 21 includes 90 to 99 parts by weight of a base made of a hard material and 1 to 10 parts by weight of a stiffness enhancer including hydroxyapatite and aluminum oxide. It is made of a material that can further strengthen its strength.

First, the base is made of a hard material and has high abrasion resistance, so that the braille guide pad 21 can be prevented from being easily worn out or damaged even during repeated use or frequent exposure to external force. To this end, the base is composed of a hard material, in particular, engineering plastics such as PTFE, polyimide, PEEK, PPS, nylon, and acetal, and can exhibit sufficient abrasion resistance and impact resistance.

In addition, the stiffness reinforcing agent contains hydroxyapatite and aluminum oxide as active ingredients. Here, hydroxyapatite and aluminum oxide are materials with excellent mechanical strength and durability, and increase the mechanical strength and durability of the braille guide pad 21, thereby increasing the braille guide pad 21. It is a substance that can enhance the physical protection effect against (21).

Therefore, according to the configuration of the braille guide pad 21 as described above, it is possible to manufacture the braille guide pad 21 with excellent wear resistance, mechanical strength, and durability, even when the braille guide pad 21 is repeatedly rubbed, contacted, and an external force is generated. There is an effect of physically protecting the braille guide pad 21 and preventing wear and tear, so that accurate route numbers and route information can be delivered to visually impaired people.

Figure 8 is a flow chart showing the steps of manufacturing the stiffness reinforcing agent of the present invention.

Referring to FIG. 8, the stiffness enhancer of the present invention most preferably includes hydroxyapatite and aluminum oxide, and the first material preparation step (S11), the second material preparation step (S12), and the third material preparation step (S13), the fourth material preparation step (S14), and the rigidity enhancer completion step (S15) can be manufactured, and a specific method for this is as follows.

(S11) first material manufacturing step

First, in the first material preparation step (S11), 65 to 80 parts by weight of water, 5 to 15 parts by weight of hydroxyapatite, 5 to 15 parts by weight of aluminum oxide powder, and polyglyceryl-10 oleate (Polyglyceryl-10 Oleate) This is a process of preparing the first material by mixing 1 to 5 parts by weight.

Here, as described above, hydroxyapatite and aluminum oxide are materials that are the main materials of the rigidity reinforcing agent and have excellent mechanical strength and durability. At this time, in order to maximize the strength enhancing effect, it is preferable to use hydroxyapatite with a size of about 3 μm and aluminum oxide with a size of about 0.5 μm.

Here, water is added as a dispersing medium for dispersing hydroxyapatite and aluminum oxide, and polyglyceryl-10 oleate is a dispersing agent, assisting in uniform mixing of the remaining materials used in the process of manufacturing the stiffness reinforcing agent and preventing aggregation. added to do

(S12) Second material manufacturing step

Subsequently, a second material is prepared by mixing 75 to 90 parts by weight of the first material with 5 to 20 parts by weight of acrylamide and 0.5 to 5 parts by weight of methylene bisacrylamide.

Here, acrylamide is an organic monomer that undergoes a polymerization reaction by being mixed with the above-described hydroxyapatite and aluminum oxide, and methylenebisacrylamide serves as a crosslinking agent for crosslinking of materials.

Therefore, in the second material preparation step, hydroxyapatite and aluminum oxide are mixed with acrylamide to prepare for polymerization, and at this time, the strength of the stiffness reinforcing agent prepared according to the addition of methylenebisacrylamide as a crosslinking agent can be further increased.

(S13) Third material manufacturing step

Next, in the third material preparation step (S13), 90 to 95 parts by weight of the second material, 1 to 5 parts by weight of ammonium persulfate, and tetramethylethylenediamine (N, N, N', N'- This is a process of preparing a third material by mixing 1 to 5 parts by weight of tetramethylethylenediamine and then mixing with a ball-mill for 20 to 40 minutes.

Ammonium persulfate added at this time serves as an initiator for initiating a polymerization reaction of acrylamide included in the above-described second material, and tetmethylethylenediamine serves as a catalyst for accelerating the polymerization reaction rate.

Therefore, acrylamide mixed with hydroxyapatite and aluminum oxide using ammonium persulfate added through the third material preparation step as an initiator is polymerized in a ball-mill mixing process, resulting in an increase in mechanical strength, where tetmethyl Ethylenediamine increases the rate of the polymerization reaction.

(S14) 4th material manufacturing step

In the following fourth material preparation step (S14), 80 to 95 parts by weight of the third material and 5 to 20 parts by weight of potassium hydroxide are mixed and stirred at a speed of 500 to 1,000 rpm for 5 to 15 minutes to obtain a fourth material. is the process of manufacturing

Potassium hydroxide added here functions as a coating agent that is coated on the surface of acrylamide polymerized in a state of being mixed with a third material, that is, hydroxyapatite and aluminum oxide. Durability and mechanical strength can be further improved.

(S14) Rigidity Reinforcing Agent Completion Step

In the final step of completing the stiffness enhancer (S14), the fourth material is dried, dried at 50 to 80 ° C for 20 to 30 hours, sintered at 1,300 to 1,600 ° C for 1 to 3 hours, and then pulverized into powder to increase rigidity. It is the process of completing the reinforcement. At this time, residual solvent and unreacted residues can be removed in the drying process, and the mechanical strength improvement effect can be further expected because the granules included in the stiffness reinforcing agent adhere to each other and solidify through the sintering process. After that, it is pulverized in the form of a powder to be prepared as a rigidity reinforcing agent.

The rigidity reinforcing agent prepared through this process can effectively prevent physical damage to the braille guide pad 21 by imparting more rigidity while being mixed with the base.

In order to explain the physical properties according to the configuration of the stiffness reinforcing agent, the evaluation results of Examples and Comparative Examples will be compared and described. Examples consist of preferred examples of the stiffness reinforcing agent of the present invention, and comparative examples are polycarbonate panels that do not contain the stiffness reinforcing agent of the present invention.

<Example>

A first material was prepared by mixing 75 g of water, 10 g of hydroxyapatite, 10 g of aluminum oxide powder, and 5 g of polyglyceryl-10 oleate.

A second material was prepared by mixing 85 g of the prepared first material, 14 g of acrylamide, and 1 g of methylenebisacrylamide.

A third material was prepared by mixing 94 g of the prepared second material, 3 g of ammonium persulfate, and 3 g of tetramethylethylenediamine, and then mixing with a ball mill for 30 minutes.

A fourth material was prepared by mixing 90 g of the prepared third material and 10 g of potassium hydroxide and stirring for 10 minutes at a speed of 700 rpm.

The prepared fourth material was dried at 70° C. for 24 hours, sintered at 1,500° C. for 2 hours, and then pulverized in the form of a powder to complete a rigid reinforcing agent.

A resin mixture containing 5% by weight of the stiffness enhancer was prepared by mixing the pulverized stiffness enhancer and polycarbonate, and was molded into a specimen shape having a width of 10 cm, a length of 10 cm, and a thickness of 1 cm.

<Comparative Example>

Polycarbonate specimen (10 cm wide, 10 cm long, 1 cm thick)

<How to measure physical properties>

(1) Pencil hardness (scratch resistance)

YASUDA SEIKI's No. The pencil hardness of the specimens of Examples and Comparative Examples was measured using a 553-M1 pencil hardness tester. Specifically, the specimen was scratched at an angle of 45 °, and the hardest pencil density symbol immediately before the coating film was ruptured and scratched was represented as a pencil hardness value.

(2) Impact strength (impact resistance)

In accordance with ASTM D256, each specimen of Examples and Comparative Examples was evaluated by notching, and the final test result was 10 tests performed on each specimen, and the average value of the 10 test results was calculated. The unit was expressed as (kgf·cm/cm).

(3) Transparency (transparency)

Permeability tests were run on 4 millimeter thick disks according to ASTM D1003 using a Gardner Haze Guard Dual.

Table 1 is a table showing the experimental results. pencil hardness impact strength permeability Example 3H 63 90 comparative example H 38 90

As shown in the above Table 1, it can be confirmed that the examples of the present invention show improvements in pencil hardness and impact strength while exhibiting equivalent transmittance when compared to the comparative examples, confirming that there is an effect of improving stiffness.

As described so far, the configuration and operation of the bus stop system for the visually impaired according to the present invention are expressed in the above description and drawings, but this is only an example and the spirit of the present invention is not limited to the above description and drawings , Of course, various changes and changes are possible within a range that does not deviate from the technical spirit of the present invention.

1: Bus 2: Seats for the disabled
3: sensor 10: bus terminal
11: boarding concession information module 12: seat securing identification module
20: Bus stop 21: Braille information pad
22: riding button 23: speaker
24: boarding platform 25: boarding auxiliary structure
30: central control server 31: route guidance module
32: boarding request module 33: seat securing notification module

Claims (5)

As a bus stop system for the visually impaired,
A bus equipped with a bus terminal in which route numbers and identification numbers are stored;
a bus stop equipped with a Braille guide pad displaying the route number in Braille and a boarding button generating boarding request information by pressing;
A route guidance module that determines the estimated time of arrival of the bus at the bus stop based on the location information of the bus terminal, generates an arrival guidance notification including the estimated time of arrival, and outputs the notification through a speaker located at the bus stop. class,
A central control server including a boarding request module that identifies the boarding request information generated after the arrival information notification is output and provides it to the bus terminal;
The braille guide pad,
90 to 99 parts by weight of a base made of a hard material, and 1 to 10 parts by weight of a stiffness enhancer including hydroxyapatite and aluminum oxide,
The stiffness enhancing agent,
65 to 80 parts by weight of water, 5 to 15 parts by weight of hydroxyapatite, 5 to 15 parts by weight of aluminum oxide powder, and 1 to 5 parts by weight of polyglyceryl-10 oleate A first material preparation step of mixing to prepare a first material;
preparing a second material by mixing 75 to 90 parts by weight of the first material with 5 to 20 parts by weight of acrylamide and 0.5 to 5 parts by weight of methylene bisacrylamide;
After mixing 90 to 95 parts by weight of the second material with 1 to 5 parts by weight of ammonium persulfate and 1 to 5 parts by weight of tetramethylethylenediamine (N,N,N',N'-tetramethylethylenediamine), a third material preparation step of preparing a third material by ball-mill mixing for 40 to 40 minutes;
A fourth material preparation step in which 80 to 95 parts by weight of the third material and 5 to 20 parts by weight of potassium hydroxide are mixed and stirred at a speed of 500 to 1,000 rpm for 5 to 15 minutes to prepare a fourth material. ;
The fourth material is dried at 50 to 80 ° C. for 20 to 30 hours, sintered at 1,300 to 1,600 ° C. for 1 to 3 hours, and then pulverized in the form of powder to complete the rigidity enhancer; Do, the bus stop system. According to claim 1,
On the bus,
A sensor is installed in the seat for the disabled and determines whether the passenger is seated in the seat for the disabled,
The bus terminal,
Characterized in that the bus includes a boarding concession information module for determining whether the seat for the disabled person is seated through the sensor and controlling the output of a seat concession notification through a speaker installed in the bus according to the seated state. stop system. According to claim 2,
The bus terminal,
After the output of the seat concession notification, a seat securing determination module for recognizing whether the seat for the passenger with reduced mobility is seated and generating seat security information according to the non-seating for the seat with reduced mobility is included;
The central control server,
The bus stop system, characterized in that it comprises a seat securing notification module for generating a seat securing notification according to the generation of the seat securing information and outputting it through a speaker located at the bus stop. delete delete