JP6179745B2 - RFID tag information storage and transmission / reception method for visually-impaired person guidance system - Google Patents

Description

  The present invention relates to a method for storing information using an arbitrary code reserved in an arbitrary sentence in an RFID tag for a visually impaired person's route guidance system and transmitting / receiving the information.

  As a social welfare infrastructure for the visually impaired, Braille blocks for road guidance and safe walking are installed on the walking path, and the installation of such Braille blocks will gradually expand to more areas. It is. Recently, a technology has been proposed in which an RFID tag containing information is attached to the Braille block and a receiving device is installed on a cane used by a visually impaired person, while the information read by the receiving device is guided by voice. Has been.

  As described above, as an example of a route guidance system for visually impaired persons, Patent Document 1 discloses a Braille block to which an RFID tag is attached, a receiving device for reading information on the RFID tag, and information read by the receiving device. Is provided with guidance means for generating route guidance information. At this time, each Braille block has an RFID tag on which a predetermined unique number is recorded, so that it is possible to know the moving direction through the receiving device, and the guide means includes geographical information such as a map. Since the RFID tag information of each braille block is stored on the basis of the information, the visually impaired person is guided to the inputted route.

  As another example, Patent Document 2 includes an RFID tag in which a unique ID owned by a visually handicapped person is recorded, and a Braille block that reads the ID of the RFID tag and guides a destination where the visually handicapped person wants to go. It is configured. At this time, the Braille block represents a central processing unit that outputs the voice data stored in the memory according to the destination of the visually impaired after the identification of the memory and the ID in which the voice data is stored, and the voice information to be output. An audio output unit that is output and a power supply unit that supplies power.

  Looking at these two prior arts, in the former case, RFID tags are installed in all the braille blocks on the route, and in the latter case, the braille blocks located at intersections, branch points, danger points, etc. It can be seen that it is limited to the installation. Such a difference is ultimately closely related to the installation cost. However, in the former case, it is only necessary to store location information in which predetermined numbers and characters are arranged. Therefore, an inexpensive RFID tag with a small storage capacity is used. It can be used and installed on all braille blocks. In the latter case, the left side is *****, the right side is *****, the forward is *****, and the backward is *****. Note that there is *** on the left side. Since a relatively large amount of information such as' must be stored, an expensive RFID tag having a large storage capacity is used to be installed only in a main place. In the latter case, since a central processing unit, a battery, and the like have to be configured in order to process particularly a large amount of information, a large cost is required for production and supply.

  In addition, the conventional technology basically includes a route guidance information means such as GPS, and when a departure place and a destination location are input, there is a restrictive element that safely guides the route in cooperation with the RFID tag. is there.

  In order to solve such problems, it is possible to attach more information to each Braille block using an RFID tag with a low price and a small storage capacity, and store and transmit this information stably. However, there has been no systematic method for information storage and transmission / reception for this purpose.

  On the other hand, recently, in constructing a route guidance system for visually handicapped people, the cost of replacing existing Braille blocks with Braille blocks attached with RFID tags has been reduced, and the installation of the Braille blocks is difficult. In order to install an FRID tag on a sidewalk or a staircase, a technique for directly applying an adhesive synthetic resin together with the RFID tag on a road surface or a structure has been proposed. For example, the RFID tag is embedded at equal intervals while directly applying adhesive synthetic resin on the road surface in line with the Braille block, or the RFID tag is embedded after forming a groove on the road surface. In this state, it is finished with a synthetic resin. Such a technology is the basis for constructing a road guidance system for visually handicapped people by installing in parallel or independently with existing Braille blocks installed on a walking path.

JP 2002-024983 A (2002.1.25.) Unexamined-Japanese-Patent No. 2003-091794 (2003.3.28.)

  It is an object of the present invention to reduce the amount of information that must be stored in an RFID tag by using a code reserved in an arbitrary sentence, and based on this information, a visually impaired person can be provided with convenient guidance. It is an object of the present invention to provide an RFID tag information storage and transmission / reception method for a user guidance system.

  The present invention provides an RFID tag installed on a walking path of a visually impaired person and having a storage space for inputting information for informing a direction, a distance, and a unique name, and an RFID tag while moving together with the visually impaired person In RFID tag information storage and transmission / reception method thereof for a visually impaired person guidance system, including a receiving device that receives tag information, and an output device that is connected to the receiving device and outputs the information as sound. One coordinate information in which arbitrary X and Y coordinate values are input in the storage space of the RFID tag; and an arbitrary first code that displays a direction and an arbitrary unique name and a descriptive word that are input as text The direction information in at least two directions combined with the second code is input, and the receiver selects the direction information set by adjusting the coordinate information, After conversion to text that is reserved with a unique name to recognize the serial first and second codes, and transfers it to the output device.

  The RFID tag storage space is divided into a first sector in which coordinate information is input; and two or more second sectors in which route guidance information is input.

  The coordinate information includes an identification value for distinguishing an RFID tag installed at a branch point or a dangerous area from an RFID tag installed on a straight path, and the receiving device is selected by recognizing the identification value. A signal indicating that the RFID tag has an identification value is transferred to the output device, and the output device receives the signal and expresses it with a signal sound or vibration.

  The coordinate information includes an area value for distinguishing an area or upper and lower layers of the building, and the receiving device recognizes the area value and transfers route guidance information according to the coordinate information to an output device.

  The coordinate information includes an alarm value indicating that the RFID tag is installed at a branch point or a hazardous area, and the receiving device recognizes the alarm value and has an alarm value selected. A signal to be displayed is transferred to the output device, and the output device receives the signal and expresses it with a signal sound or vibration.

  The receiving device includes an antenna for receiving information stored in the RFID tag; a calculation unit that determines front / rear / left / right by adjusting the coordinate information, and selects and recognizes route guidance information according to the information; A storage unit storing each sentence reserved corresponding to the second code; and converting the selected route guidance information into information stored in the storage unit to convert the sentence into an output device; A conversion unit for transferring to the network.

  While the receiving device includes buttons for selecting front, back, left, and right directions, RFID tag road guidance information for the direction of the selected button is recognized by recognizing the front, rear, left, and right directions according to the adjustment of the coordinate information. Transfer to the output device.

  The RFID tag receives advertisement information that is combined with an arbitrary first code that displays a direction, an arbitrary unique name that is input in a sentence, and an arbitrary second code that displays a predicate.

  The receiving device and the output device are installed on a cane that is an auxiliary walking tool for a visually impaired person.

  According to the RFID tag information storage and transmission / reception method for the visually impaired person guidance system of the present invention, the amount of information that must be stored in the RFID tag using a code reserved in an arbitrary sentence is reduced. Inexpensive RFID tags can be installed on all walking paths, and based on this, convenient route guidance for visually handicapped persons is possible, so it is convenient even if it is not linked to a separate route guidance system such as GPS. Has the effect of becoming usable.

It is a block diagram which shows the conventional route guidance system of the conventional visually impaired. It is an illustration figure which shows arrangement | positioning of the RFID tag to which this invention was applied. It is an illustration figure which shows the storage space of the RFID tag to which this invention was applied. It is an exemplary view showing a first sector of an RFID tag storage space to which the present invention is applied. FIG. 6 is an exemplary diagram showing route guidance information for a second sector of an RFID tag storage space to which the present invention is applied. It is a block diagram which shows embodiment of this invention. It is a block diagram which shows embodiment of this invention. It is a block diagram which shows the transmission / reception method to which this invention was applied.

  As shown in FIG. 1, the RFID tag information storage and transmission / reception method for the visually-impaired person guidance system of the present invention inputs information for informing the direction, distance, and unique name while being installed on a walking path. As described above, the RFID tag 100 having a storage space, the receiving device 200 that receives the information of the RFID tag while moving with the visually impaired person, and the information that is connected to the receiving device and recognized by the receiving device is voiced. As an example, the present invention is applied to a visually impaired person's route guidance system including an output device 300 that outputs as

  At this time, as shown in FIG. 1, the RFID tag 100 is installed, for example, in each Braille block 10a, 10b on a walking path, or embedded together with an adhesive synthetic resin 10c on a road surface such as a pedestrian crossing. As still another embodiment, the adhesive synthetic resin 10c can be formed side by side with the existing braille blocks 10a and 10b on the walking path. As shown in FIG. 2, the braille blocks 10a and 10b are divided into, for example, a linear type installed on a wire route and a dotted type installed in a branch point or a dangerous area. An RFID tag storing information on two directions can be attached to the dotted braille block 10a with an RFID tag storing information on four directions, front, rear, left and right. In the case of a linear braille block, between two or three Thus, one RFID tag can be attached at regular intervals.

  In addition, the receiving device 200 is installed in the cane 20 as a walking aid for handicapped persons as an embodiment, but includes an antenna that is installed at the lower end of the cane and receives information on the RFID tag. The information is transferred to the output device.

  In addition, the output device 300 includes, as an embodiment, a speaker, an earphone, or a vibrator installed on a cane that is a walking aid for a handicapped person.

  In such a visually impaired person's route guidance system, the RFID tag 100 of the present invention includes an arbitrary first code and an arbitrary code for displaying one coordinate information and direction in which arbitrary X and Y coordinate values are input to the storage space. The route guidance information in at least two directions combined with an arbitrary second code for displaying a unique name and a predicate is input.

  As shown in FIG. 2, the coordinate values of the coordinate information are, for example, (0, 3), (0, 4), (0, 5). . . . , (1,4), (2,4), (3,4). . . . . It is arranged as follows. Therefore, when a visually handicapped person moves from the (0,0) point to the (0,5) point, the forward becomes (0,5) and the right side becomes (1,4) as the y value increases continuously. It is. On the other hand, when moving from the (0, 5) point to the (0, 0) point, the forward becomes (0, 0) and (1, 4) becomes the left as the y value continues to decrease. As described above, when the coordinate information passes through two or more blocks, the x-axis and y-axis adjustment directions are forward, and the left and right sides are designated on the basis of this, and the route guidance information in the corresponding direction is accurately obtained. It can be guided.

  The coordinate information includes an identification value for distinguishing the RFID tag 100 installed at a branch point or a dangerous area and the RFID tag 100 installed on a straight path as an embodiment. That is, as described above, the Braille block can be divided into a point type that is usually installed at a branch point or a dangerous area and a linear type that is installed on a straight path, but the RFID tag 100 installed in the Braille type Braille block 10a. 2 and 4, J (0, 3), J (0, 4), J (0, 5). . . . . The RFID tag 100 installed in the linear Braille block 10b includes S (1,4), S (2,4), S (3,4), and the like including an identification value S before the coordinate value. . . . . It will be. As described above, the identification value input together with the coordinate information is transferred to the output device 300 to indicate that the RFID tag 100 having the identification value recognized and selected by the receiving device 200 described later is sent to the output device 300. To. Therefore, for example, a signal is generated in a dotted braille block 10a installed at a branch point or a danger area, and this signal is expressed by a signal sound or vibration through the output device 300. Or, necessary route guidance information can be obtained.

  As another embodiment, the coordinate information includes area values for distinguishing areas or upper and lower layers of buildings as shown in FIGS. The area value is increased by the number of all braille blocks installed in the area where the coordinate value is wide, so that efficient operation can be performed, and the interlayer division is made clear, so the interior of the building The RFID tag 100 installed in the vehicle is installed without duplication so that the operation of the route guidance system becomes more convenient. Such a zone value can be provided together with the coordinate value, for example. As shown in FIG. 6, among the coordinate information of the RFID tag 100 installed in the 1st zone and the 2nd zone, the previous three-digit numbers 001 and 002 are By distinguishing each zone and layer, the receiving apparatus 200 distinguishes even if the same coordinate information J (0,5) below is used. At this time, the zone value may be 1 to 127, for example.

  As another embodiment, the coordinate information includes an alarm value that informs that the RFID tag is installed at a branch point or a dangerous area, as shown in FIG. As described above, the alarm value input together with the coordinate information can be displayed by, for example, “0” or “1”. Therefore, a signal indicating that the receiving device 200 described later recognizes the alarm value and is the RFID tag 100 having the selected alarm value is transferred to the output device 300. In the braille Braille block 10a installed in a dangerous area such as a staircase, a signal according to the alarm value '1' is generated, and this signal is expressed by a signal sound or vibration through the output device 300. It can be used to prevent accidents.

  As shown in FIG. 4, the coordinate information uses 2 bytes to store coordinate values, 1 byte to store the identification value and area value, and 1 byte to store an alarm value. To do.

  As shown in FIG. 2, the route guidance information is stored, for example, in each RFID tag 100 of the Braille blocks 10a and 10b installed in the subway of Gangnam Station, and the exit 1 direction, elevator direction, landing direction, It is for guiding the direction of the exit, and S (3, 4) is inputted with the road guidance information for the two directions of the elevator and the exit 2, and the exit (1) and the exit / exit is inputted to S (5, 2). While the road guidance information for the place is input, J (5, 4) is the road guidance information for the four directions of the first exit, the elevator, the landing, and the second exit. In this case, there is an elevator 1 meter in front of the route guidance information. ',' The front is the exit 2 direction. ‘、’ There is Exit 1 in the direction you choose. ’And‘ There are landings in the directions indicated. 'Is provided in the form of a sentence, and if necessary, please be careful. 'Or' Please press the acoustic signal button 'must be accompanied. Therefore, since a large storage space is required to input all the route guidance information in the RFID tag 100, a code reserved in text is used as a means for reducing this. Here, for example, the route guidance information of the present invention is an arbitrary display that displays a direction such as “1 meter forward”, “forward”, “in the selected direction”, or “in the indicated direction”. Please note 1 code, unique name entered in sentences such as “Exit 1”, “Elevator”, “Platform” and “Exit 2”, “Yes”, “Direction” It is combined with an optional second code that displays a predicate such as' or 'push an acoustic signal button'. Here, as shown in FIG. 3, the first and second codes are combined with one or more digits or characters, for example. When this is compared with the table, as shown in FIG. 5, 13 characters must be input when inputting the existing route guidance information. On the other hand, when a code reserved in sentences is used, 1 Since only one first code (4), five characters, and one second code (1) need to be input, the storage space for information can be reduced a lot compared to existing route guidance information. . At this time, according to the conventional method of inputting the route guidance information, for example, a Korean character having 12 or more characters is used, so that an additional 24 bytes of storage space is required beyond the storage capacity. Here, the first and second codes and the reserved text can correspond to each other as shown in the lower end of FIG. Therefore, when inputting one route guidance information, not only can the storage space of the entire RFID tag be reduced by the storage space that is reduced, or more route guidance information can be input, but a large capacity storage space can be used more efficiently. It is something that can be done. On the other hand, as an embodiment of the present invention, the RFID tag 100 is combined with an arbitrary first code that displays a direction and an arbitrary unique name that is input in a sentence and an arbitrary second code that displays a predicate. Information can be entered. That is, as shown in FIG. 2, there are many shopping streets on the left and right sides of the subway movement section. Of these, in the business entity “***” that requires advertisement, “ There is *** ',' there is *** on the right side. 'Is used so that visually impaired people can use it.

  As shown in FIG. 3, the storage space of the RFID tag 100 is divided into a first sector to which the coordinate information is input and two or more second sectors to which the route guidance information is input, as shown in FIG. Thus, the stored information can be easily used. That is, the linear Braille block 10b is provided with two second sectors for inputting road guidance information in two directions in the front and rear directions, and the four directions of road guidance information in the front, rear, left and right directions are input in the Braille Braille block 10a. Four second sectors are provided. The coordinate information of the second sector stores the above-described coordinate value, identification value, area value, or alarm value as shown in FIG.

  The receiving device 200 of the present invention selects the route guidance information set by adjusting the coordinate information, recognizes the first code and the second code, converts them into a sentence together with a unique name, and then converts them to the output device. Forward to 300. That is, since the receiving apparatus 200 continuously increases the y-axis coordinate value when moving from, for example, the first exit, the forward direction is the landing direction, and at this time, the x-axis coordinate value is changed if it moves in the elevator direction. Therefore, the route guidance information for the left side is selected.

  Thus, if the route guidance information is selected by adjusting the coordinate information, for example, as shown in FIG. 5, the first code (4) and the second code (1) including the first code (4) elevator (1) are included. After recognizing the information in the form, there is an elevator in front of the sentence according to each reserved word code stored in advance. Is converted into '. The route guidance information converted into the sentence form is transferred to an output device such as a microphone or an earphone. Therefore, as shown in FIG. 8, the receiving apparatus 200 determines the front, rear, left, and right according to the normal antenna 210 for receiving information stored in the RFID tag 100 and the adjustment of the coordinate information, as shown in FIG. A calculation unit 220 that selects and recognizes suitable route guidance information, a storage unit 230 that stores sentences corresponding to the first and second codes, and a storage unit that stores the selected route guidance information. A conversion unit 240 such as a TTL (speech synthesizer) engine is provided, which substitutes information and converts it into a sentence and then transfers it to an output device. Such a configuration is installed on a cane that is a walking aid for visually impaired persons.

  Meanwhile, the receiving device 200 includes a button unit 250 for selecting the front, back, left, and right directions, while recognizing the front, rear, left, and right directions according to the adjustment of the coordinate information, the RFID corresponding to the selected button direction. The tag route guidance information is transferred to the output device. That is, in the braille block to which the RFID tag whose coordinate information is J (5, 4) is attached, as described above, a signal indicating that it is a branch point is generated. In order to confirm each direction, it is possible to obtain route guidance information for four directions by simply pressing a button without having to move back and forth and right and left. Even at this time, it recognizes the adjustment of the coordinates and recognizes the front, rear, left and right directions, but if a visually handicapped person who moves from the exit 1 direction toward the boarding area presses the left button, Since the boarding / alighting direction is ahead, the route guidance information “There is an elevator on the left side” is automatically output.

  In addition, as described above, the receiving device 200 can recognize the identification value, the area value, and the alarm value, and transfer the route guidance information according to the recognition value to the output device. Recognizing the identification value and transferring a signal indicating that the RFID tag has the selected identification value to the output device, the output device receiving the signal and expressing it with a signal sound or vibration, Recognizing the value and transferring the route guidance information according to the coordinate information to the output device, recognizing the alarm value and transferring the signal indicating that the RFID tag has the selected alarm value to the output device, The output device receives the signal and expresses it with a signal sound or vibration.

  The output device 300 directly transmits route guidance information to a visually impaired person through sound or vibration, and includes a speaker, an earphone, a vibrator (vibrator), or the like. As described above, the output device 300 is installed on a cane that is a walking aid for visually impaired persons.

  Therefore, according to the present invention, since the amount of information that must be stored in the RFID tag using a code reserved in an arbitrary sentence is reduced, an inexpensive RFID tag can be installed on all walking paths. Based on this, it is possible to provide convenient guidance for visually impaired people, and it can be used conveniently without cooperation with a separate route guidance system such as GPS.

Claims (4)

An RFID tag installed on the walking path of a visually impaired person and having a storage space for inputting information for informing the direction, distance, and unique name, and information on the RFID tag while moving together with the visually impaired person In RFID tag information storage and transmission / reception method thereof for a visually impaired road guidance system, including a receiving device for receiving, and an output device connected to the receiving device and outputting the information as sound,
The RFID tag storage space displays a first sector in which one coordinate information is input, an arbitrary X and Y coordinate value, an arbitrary first code indicating a direction, an arbitrary unique name, and a predicate. It is divided into two or more second sectors to which road guidance information in at least two directions combined with an arbitrary second code is input, and the coordinate information includes a straight line with an RFID tag installed at a branch point or a dangerous area An identification value for distinguishing RFID tags installed on the route, an alarm value for notifying that the RFID tag is installed at the branching point or in the dangerous area, and an area for distinguishing the upper and lower layers of the region or the building Value and
The receiving device selects the route guidance information set by adjusting the coordinate values, recognizes the first code and the second code, converts them into a reserved sentence together with a unique name, and then converts the information into the reserved text. And a signal indicating that the RFID tag has the selected identification value by recognizing the identification value is transferred to the output device, and the alarm value is recognized and has the selected alarm value. A signal indicating that the tag is an RFID tag is transferred to the output device, the area value is recognized, route information according to the coordinate information is transferred to the output device,
The output device outputs the information as a voice, and receives the signal of the identification value or the alarm value, and outputs the information by a signal sound or vibration. Tag information storage and transmission / reception method thereof. The receiving device is:
An antenna for receiving information stored in the RFID tag;
A calculation unit that determines front and rear, left and right by adjusting the coordinate information, and selects and recognizes route guidance information that matches the calculation information;
A storage unit storing each sentence reserved corresponding to the first and second codes;
Substituting the selected route guidance information with the information stored in the storage unit to convert it into text, and then converting this to an output device,
The RFID tag information storage and transmission / reception method for the visually impaired person's route guidance system according to claim 1, comprising: While the receiving device includes a button portion for selecting the front, back, left, and right directions,
The road for visually handicapped persons according to claim 1, wherein the direction information of the RFID tag corresponding to the direction of the selected button is transferred to the output device by recognizing the front / rear / right / left direction according to the adjustment of the coordinate information. RFID tag information storage and transmission / reception method for a guidance system.   2. The RFID tag information storage and guidance system for a visually impaired person according to claim 1, wherein the receiving device and the output device are installed on a walking stick which is an auxiliary walking tool for the visually impaired person. The transmission / reception method.