JPH09313523A - Guide system for visual handicapped person - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide system with excellent durability without requiring maintenance and maintaining and operating cost for a visual handicapped person to enable a user to walk safely grasping the surrounding situation simply at low cost. SOLUTION: This guide system for a visual handicapped person is equipped with a picture letter tile 1 with picture letters formed by protrusions of an easy-to-discriminate and simplified image on the surface of a square tile, a Braille tile 20 formed with protrusions of patternized 50 clear sounds of Japanese on the surface of a square tile, and an auxiliary tile 30 formed with protrusions of patternized signal of Braille. Those picture letter tile 10, Braille tile 20, and auxiliary tile 30 are combined and placed on the surface of the walking road.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a visually impaired person guiding system for guiding the walking of a visually impaired person such as a blind person.

[0002]

2. Description of the Related Art Conventionally, as one of the methods for guiding the walking of a visually impaired person such as a blind person, FIG. 17 (note that FIG. 17A shows a caution position and FIG. 17B shows a traveling direction). It is known that concrete blocks, ceramic tiles, etc. with small protrusions or long ridges on the upper surface are laid on the walking road surface as shown in Fig. 4) so that the attention position or the direction of travel can be sensed. There is.

Further, by embedding a metal body, a magnetic body, a permanent magnet or the like on a walking road surface, and detecting any one of them by a cane or the like carried by a visually impaired person such as a blind person, the visually impaired person A method that allows walking based on the detected information has also been reported. In addition, electronic parts, etc. that notify the location by voice are installed near the entrance / exit of public buildings, intersections, platforms, stops, stairs, etc. so that the location is notified by voice, or walking near them. Regarding a guidance system of a method in which electronic parts that transmit information on the location are embedded on the road surface and the information is received by a receiver carried by a visually impaired person such as a blind person and the location is detected by voice. It has been reported.

[0004]

However, when detecting the attention position or the traveling direction by the small protrusions or long ridges formed on the upper surface of the block, tile, etc.,
Blind persons and other visually impaired people ride on small protrusions or long ridges and sense the position of attention or the direction of travel on their soles, etc., so it takes time to grasp that information, and misidentification may occur when the surface is damaged. There is a problem that it easily occurs. In addition, there is a problem that it is difficult to walk to a place that the user does not know because only the information on the attention position or the traveling direction can be sensed.

On the other hand, when walking by detecting a metal body, a magnetic body, a permanent magnet, etc., information is obtained by detecting the presence or absence of the metal body, the magnetic body, the permanent magnet, etc. Similar to blocks and tiles with small protrusions or long protrusions, the number is limited to a few types, and there is a problem that pedestrians cannot be provided with a wide variety of detailed information. Therefore, there is a problem in that it is extremely difficult to grasp the current position and the condition of the road by oneself, and select and walk.

In the case of using electronic parts, there is a problem that the structure is complicated, the operation tends to be unstable, and the cost becomes high. Also, because it is used outdoors,
It is extremely difficult to function stably for a long period of time under severe environmental conditions such as temperature difference, vibration, radio noise, etc., and maintenance and running costs are also required, and it is difficult to put it into practical use considering its cost effectiveness. is there.

Therefore, the present invention has been made in view of the above-mentioned problems, and it is possible to easily grasp the surrounding situation and to walk safely and appropriately, and at the same time, it is inexpensive and has excellent durability and maintenance. It is to obtain a visually impaired guidance system that is unnecessary and does not require maintenance and operation costs.

[0008]

The present invention is a visually impaired person guiding system for guiding the walking of a visually impaired person, and in order to solve the above-mentioned problems, in the invention according to claim 1,
Pictographic tiles with pictograms of simplified images that are easy to distinguish and are formed on the surface of a square tile, and braille tiles that are formed with convex parts on the surface of a square tile by patterning the Braille of the Japanese syllabary, and Braille. Is provided on the surface of the pedestrian with a combination of the pictogram tile, the Braille tile, and the auxiliary tile.

According to a second aspect of the present invention, a linear convex portion is formed at a position corresponding to the central portion of the lowermost point of the braille of the braille tile and the auxiliary tile, and the linear convex portion forms the braille. The purpose is to indicate the reading direction of tiles.

According to a third aspect of the present invention, the first L which resonates with a radio wave of a predetermined frequency corresponding to a pictogram formed on a pictogram tile and radiates a radio wave of a predetermined resonance frequency.
This is because a plurality of C resonance circuits are arranged in the pictogram tile at appropriate intervals.

In a fourth aspect of the present invention, a predetermined frequency corresponding to the vowel row of the first row and the consonant rows of the second row to the ninth row of the Japanese syllabary of the Japanese syllabary, which is formed in the Braille tile, is used. The second which resonates with the electric wave of the and emits the electric wave of a predetermined resonance frequency.
An LC resonance circuit and a radio wave of a predetermined resonance frequency are radiated by resonating with a radio wave of a predetermined frequency corresponding to the vowels of the first to fifth vowels of the Japanese syllabary of the Japanese syllabary formed in the same braille tile. A third LC resonance circuit, and a second LC resonance circuit and a third LC resonance circuit.
The LC resonance circuit is arranged in the Braille tile, and the fourth LC resonance circuit that resonates with a radio wave of a predetermined frequency corresponding to the Braille code formed on the auxiliary tile and emits a radio wave of a predetermined resonance frequency is assisted. It is in the tile.

According to a fifth aspect of the present invention, each of the LC resonant circuits described above is formed by printing or etching on a substrate made of a dielectric or an insulator, and a capacitor connected to the coil. It is composed of and and the same substrate is embedded in each tile. According to a sixth aspect of the present invention, the above-mentioned capacitor is formed by disposing metal plates on the upper and lower surfaces of a substrate made of a dielectric material, or by embedding a chip-shaped capacitor in the same substrate. . According to the invention of claim 7, the pictogram tile is formed larger than the braille tile and the auxiliary tile. In the invention according to claim 8, one of the LC resonance circuit and the transmitter that sequentially transmits radio waves of a plurality of preset frequencies to each of the LC resonance circuits described above is transmitted from the transmitter. Corresponds to a receiver that receives this resonance radio wave when it resonates with a radio wave of a predetermined frequency and emits a radio wave of the resonance frequency, and a pictogram that is stored in advance based on the resonance radio wave that is emitted from the first LC resonance circuit received by the reception unit. The second L converted by the receiving unit
A resonance radio wave radiated from the fourth LC resonance circuit received by the receiving unit, which is converted into an audio signal corresponding to the clear fifty syllabary based on the resonance radio wave radiated from the C resonance circuit and the third LC resonance circuit. And a voice conversion unit for converting into a voice signal containing a Braille code stored in advance based on the resonance radio wave radiated from the second LC resonance circuit and the third LC resonance circuit, and a voice signal converted by the voice conversion unit. It is possible to guide by voice using a guidance device having a voice output unit for uttering.

According to a ninth aspect of the present invention, in the above-described induction device according to the eighth aspect, a transmitting antenna for transmitting a radio wave of a predetermined frequency from the transmitting section and each LC resonance circuit resonating with the radio wave. It is composed of a cane portion having a receiving antenna for receiving radio waves radiated from, a guiding device main body having a transmitting portion, a receiving portion, a voice converting portion, and a voice output portion,
The transmitting antenna of the cane portion and the transmitting portion of the guiding device body are connected, and the receiving antenna of the walking portion and the receiving portion of the guiding device body are connected.

[0014]

According to the present invention configured as described above, according to the invention of claim 1, the walking method (for example, straight running, diagonally moving, stopping confirmation, etc.) and the condition of the road surface are determined by the pictogram tiles. (For example, steps, pedestrian crossings, forks, traffic lights,
It is possible to know the bus or train station). In addition, Braille tiles patterned with the Japanese syllabary and auxiliary tiles patterned with Braille signs such as dakuon, semi-voiced sound, jakuon, and numbers are used to identify town names, street names, intersection names, and their positions (for example, southwest corner). It becomes possible to know the current position such as. Therefore, even a visually handicapped person can easily and safely reach the destination based on the walking method, the condition of the road surface, and the current position.

According to the second aspect of the present invention, since the reading direction of the Braille can be known by the linear convex portion, it becomes possible to read the Braille accurately and read the Braille by mistake. Can be prevented.

According to the third aspect of the present invention, if the radio waves of the resonance frequency corresponding to the pictograms radiated from the first LC resonance circuit of the pictogram tile are received and these radio waves can be converted into voices, the gait can be walked. It is possible to instantly grasp the method (for example, straight running, diagonally moving, stop confirmation, etc.) and the condition of the road surface (for example, a step, a pedestrian crossing, a fork, a traffic light, a bus or a train stop, etc.) by voice. Also, a plurality of first L
Since the C resonance circuit is provided, the detection range of the resonance frequency is widened, and the electric wave radiated from the first LC resonance circuit can be received while walking. In addition, by any chance, the first
When the LC resonance circuit becomes defective, a plurality of first LCs
When the resonance circuit is incorporated, the detection area is reduced, but since it can be used as it is, the reliability is increased.

According to the invention described in claim 4, the resonance frequency corresponding to the vowel row of the first row and the consonant rows of the second row to the ninth row of the Japanese syllabary emitted from the second LC resonance circuit of the Braille tile. Radio wave and the radio wave having a resonance frequency corresponding to the vowels of the first to fifth stages of the Japanese syllabary emitted from the third LC resonance circuit, and the muddy sound, semi-dumb sound, whistle, and numbers emitted from the fourth LC resonance circuit of the auxiliary tile. If it is possible to receive radio waves of the resonance frequency corresponding to the Braille code such as, and convert them to voice based on these radio waves, the current location such as the town name, street name, intersection name and its position (for example, the southwest corner) It becomes possible to grasp by voice. Therefore, it is possible to grasp the current position and the like in a short time, the burden of grasping the current position and misidentification are reduced, and even if the surfaces of these tiles are damaged, there is no influence.

According to the fifth aspect of the invention, since the structure of the electric part of the LC resonance circuit is only a simple inductance and capacitance, the deterioration of the electric characteristics is small.
In addition, since the coil that serves as an inductance can be easily integrally formed on the surface of the substrate by printing, etching, etc., it is strong against vibration of automobiles, can be made small in size and can be made thin, and the strength of the tile even when embedded in the tile can be improved. Less likely to drop. In addition to stable operation against heat and electrical noise,
The manufacturing method is simple and easy, the number of steps is small, and the manufacturing cost is low. Furthermore, when laying these tiles, a reinforcing structure that withstands shock when passing an automobile, etc., and a sealed structure to prevent water, etc., from entering the Since it will be stable enough to be used for a long time outdoors even under severe conditions such as vibration and radio noise, and it does not require batteries or wiring.
There is also the advantage that no special installation cost is required, and subsequent maintenance and running costs are unnecessary.

According to the sixth aspect of the present invention, the capacitor serving as the capacitance can be formed by simply disposing the metal plates on the upper and lower surfaces of the substrate or by burying the chip-shaped capacitor in the substrate. Therefore, it is strong against vibrations, can be made small in size and can be made thin, and the strength of the tile will not be deteriorated even if it is embedded in the tile. In addition, it operates stably against heat and electrical noise, and the manufacturing method is simple,
It can be manufactured easily with few steps and at low cost. According to the invention described in claim 7, since the pictographic tile is formed larger than the braille tile and the auxiliary tile, it becomes possible to recognize which pictographic tile is the one while walking.

According to the invention described in claim 8, if the radio waves of the resonance frequency corresponding to the pictogram emitted from the first LC resonance circuit of the pictogram tile are received and these radio waves can be converted into the voice, the walking It becomes possible to instantly understand the method (for example, straight ahead, diagonally, stop confirmation, etc.) and road surface conditions (for example, steps, pedestrian crossings, forks, traffic lights, buses or train stops, etc.) by voice. Even if the tile surface is damaged, it will not be affected.

Further, the radio waves having the resonance frequency corresponding to the vowel row of the first row and the consonant rows of the second row to the ninth row of the Japanese syllabary emitted from the second LC resonance circuit of the Braille tile and the radiation from the third LC resonance circuit. Resonance corresponding to the radio wave of the resonance frequency corresponding to the first to fifth vowels of the Japanese syllabary and the dull sound, the semi-voiced sound, the jumbled sound, the numbers, etc. emitted from the 4th LC resonant circuit of the auxiliary tile. If radio waves of a frequency are received and these radio waves can be converted into voice, it becomes possible to grasp the current position such as a town name, a street name, an intersection name and the position thereof (for example, the southwest corner) by voice. Therefore, it is possible to grasp the current position and the like in a short time, the burden of grasping the current position and misidentification are reduced, and even if the surfaces of these tiles are damaged, there is no influence.

According to the ninth aspect of the present invention, when the walking stick is moved along each tile, the character information is converted into voice information by the guiding device, and the current position of the user is confirmed by voice. become able to. Also, if these character information and voice information are used in combination, it is possible to provide more detailed information than ever before, as shown in the example of the combination of the pictogram tile, the Braille tile, and the auxiliary tile in FIG. .

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a pictorial character tile 10, a braille tile 20, and an auxiliary tile 30 of the present invention arranged on a walking road surface, and a visually impaired person such as a blind person who carries the guiding device 40 of the present invention on the walking road surface is a guiding device. The figure which shows the example which walks according to the audio | voice guidance from the small speaker 60 connected to the induction | guidance | derivation apparatus main body 40a, receiving the electric wave radiated from the pictogram tile 10, the Braille tile 20, and the auxiliary tile 30 with the cane 50 used as the antenna part of 40. Is.

As the pictogram tile 10, a ceramic tile excellent in crack resistance, freezing resistance and chemical resistance is used, and the one is formed into a square with one side of 30 cm. FIG. 2 shows an example of pictograms of the pictogram tile 10. FIG.
(A) is a pictogram tile 10a indicating "stop / confirm", and 24 dot-shaped convex portions 10b are arranged integrally on the upper surface thereof. FIG. 2B is a pictographic tile 10b indicating "oblique progression", and has six diagonal convex portions 11 arranged on the upper surface thereof to be integrally formed.

FIG. 2C shows a pictorial character tile 10c indicating "straight ahead", in which three linear convex portions 12 are arranged on the upper surface in upper and lower two stages and the linear convex portions 12 in upper and lower two stages are arranged. Two rows are arranged on the left and right to be integrally formed. FIG. 2D is a pictographic tile 10d indicating an "intersection", in which four linear protrusions 13 are arranged in a cross shape on the upper surface thereof.
Two short linear protrusions 1 are provided on each of the left and right sides of the linear convex portion 13.
3a is arranged and integrally formed. FIG. 2 (e) is a pictographic tile 10e showing a “branch road”, in which four linear convex portions 14 are arranged on the upper surface in two rows on the left and right, and three linear convex portions 14a are arranged on the lower portion. They are arranged and integrally formed.

FIG. 2F shows a pictogram tile 10f showing a "pedestrian crossing", and three rectangular convex portions 1 are provided on the upper surface thereof.
5 are arranged and integrally formed. FIG. 2 (g) is a pictographic tile 10g showing "stairs / steps", in which a wide rectangular convex portion 16 is arranged on the upper surface and integrally formed. FIG. 2 (h) shows a pictogram tile 1 indicating "traffic light".
It is 0 h, and three circular convex portions 17 are arranged in a line on the upper surface and are integrally formed. Figure 2 (i) shows "Bus
And a trapezoidal convex portion 18 on the upper surface thereof and two under the trapezoidal convex portion 18.
The individual circular convex portions 18a are arranged and integrally formed.
FIG. 2 (j) shows a pictogram tile 10j indicating a "doorway", in which two short rectangular convex portions 19 are alternately arranged on the upper surface and integrally formed. In addition,
Each of the above-mentioned convex portions 10b, 11, 12, 13, 13a, 1
The height of 4,14a, 15,16,17,18,18a, 19 is about 6 mm.

FIG. 3 is a diagram showing an example of the structure of the pictogram tile 10, FIG. 3 (a) is a top view, FIG. 3 (b) is a sectional view taken along line AA, and FIG. 3 (c). Indicates the LC resonance circuit. The pictogram tile 10 of FIG. 3 is the pictogram tile 10i showing the bus / train landing of FIG. 2 (i). The pictogram tile 10i has a trapezoidal convex portion 18 on the upper surface and two circular convex portions 18a on the lower portion thereof. , 18a are arranged and integrally formed. The pictogram tile 10i resonates with a radio wave of a predetermined frequency corresponding to the pictogram sent from the guidance device 40 so that a word corresponding to the pictogram is detected by the guidance device 40 and sounded as a voice. It has a built-in first LC resonance circuit that radiates radio waves.

Here, since the pictogram tile 10 must detect the resonance frequency of each first LC resonance circuit while walking, a wide detection area is required and the first LC resonance circuit should fail. In such a case, if a plurality of first LC resonance circuits are incorporated, the detection area is reduced, but since it can be used as it is, the reliability is increased. In addition, since the L value becomes large in a large-sized LC resonance circuit, it becomes difficult to form a high-frequency LC resonance circuit and the strength of the pictogram tile 10 in which this is embedded also decreases, so the thickness of the pictogram tile 10 is reduced. Need to thicken. Therefore, in this embodiment, a plurality of first LC resonant circuits having a small size are used to widen the detection area.

Therefore, four recesses 18b, 18 are formed in the lower center of each of the parts obtained by dividing the pictogram tile 10i into four equal parts.
b, 18b, 18b are arranged, and the substrates LC _P1 , LC _P2 , LC _P3 and LC _P4 made of four dielectrics or insulators forming the first LC resonance circuit are arranged in the recess 18b. , Each of these substrates LC _P1 , LC _P2 , LC
Ceramic reinforcing plate 18c covering _P3 and LC _P4 ,
18c, 18c and 18c with an epoxy adhesive 18d
It is integrated by adhesion. The substrates LC _P1 , LC _P2 , LC _P3, and LC _P4 made of a dielectric or an insulator can be made of glass, ceramics, synthetic resin film, or the like, but in the present embodiment, a ceramic substrate is used. explain.

Each ceramic substrate LC _P1 , LC _P2 , L
Coil L _P1 on the surface of the C _P3 and LC _P4 constituting the inductance of the 1LC resonant circuit, L _P2, L _P3 and L _P4
Are formed by printed wiring. In addition, capacitors C _P1 , C _P2 that form a capacitance of the first LC resonance circuit by disposing a pair of metal plates on the upper and lower surfaces of one end of each ceramic substrate LC _P1 , LC _P2 , LC _P3 and LC _P4 .
C _P3 and C _P4 are formed, and the metal plate disposed on the upper surface of each substrate is connected to one end of each coil, and the metal plate disposed on the lower surface of each substrate is connected to the other end of each coil. .

As a result, as shown in FIG. 3C, the ceramic substrate LC _P1 is composed of L _P1 and C _P1 , and the ceramic substrate LC _P2 is composed of L _P2 and C _P2 . The substrate LC _P3 is formed of L _P3 and C _P3 , and the ceramic substrate LC _P4 is formed with the respective first LC resonance circuits of L _P4 and C _P4 . Since each of these first LC resonance circuits has the same configuration and has the same resonance frequency, it is sufficient to detect any one of the first LC resonance circuits. The first L
A C resonance circuit having a resonance frequency of 5 to 30 MHz is used, the inductances of the coils L _P1 , L _P2 , L _P3 and L _P4 are 0.2 to ₄ μH, and the capacitor C
The capacitance of _P1 , C _P2 , C _P3 and C _P4 is 150 ~
It is 250 pF.

Braille is a character for the blind who combines points projected on the paper surface in a certain manner. The Braille of the Japanese syllabary of the Japanese syllabary currently used by blind people is as shown in FIG. ,
A combination of 6 points in 3 rows and 2 columns is used. Braille tile 2 representing the Japanese syllabary of the present embodiment
0 (hereinafter, the Braille tile representing the Japanese syllabary is simply referred to as the Braille tile 20) has a convex portion corresponding to the point of the Braille placed on the upper surface of the Braille tile 20 and integrally formed to form the Braille tile 20. There is.

As the Braille tile 20 of this embodiment, a ceramic tile having excellent resistance to cracking, freezing and chemicals is used, which is formed into a square of 15 cm on each side. 5A and 5B are diagrams showing an example of the structure of the braille tile 20, FIG. 5A is a top view, and FIG.
A sectional view is shown, and FIG. 5C shows the LC resonance circuit. The braille tile 20 in FIG. 5 is a braille tile 20 indicating the Japanese syllabary, and the first dot is on the upper surface of the braille tile 20.
In the first row and the second row of the column and the second row of the second column, the projections 21,
21 and 21 are arranged, and the central portion of the third row (bottom row) (first row)
A linear convex portion 22 indicating the reading direction is arranged between the row and the second row) to be integrally formed.

Here, as apparent from FIG. 4, when the braille tile 20 is laid upside down, the braille tile 20
When the Braille pattern formed by each convex portion 21 on the surface of the image is rotated and read as Braille, for example, "Sa" is changed to "Ki" and "Ta" is changed to "Ko" to read the correct Braille. Can not be. Further, even if all the braille tiles 20 are laid correctly in the vertical direction, if they are read from the opposite direction, they cannot be read correctly. Therefore, in the present embodiment, a linear convex portion 22 having a low height, a narrow width, and a short length is provided in the central portion of the lowermost stage of the Braille tile 20, and the linear convex portion 22 is laid so that the lowermost stage is downward. are doing. As a result, it becomes possible to easily grasp the point and the center position of the Braille and read the Braille correctly according to the position of the linear convex portion 22 in the lowermost stage. The height of each of the above-mentioned convex portions 21 and 22 is about 6 mm.

The Braille tile 20 resonates with a radio wave having a predetermined frequency corresponding to the Braille transmitted from the guiding device 40 so that the character corresponding to the Braille is detected by the guiding device 40 and sounded as a voice. It has a built-in LC resonance circuit that radiates the radio wave of. Here, in order to enable the induction device 40 to detect the resonance frequency in a short time,
Radio waves limited to four types of frequencies (described later) are transmitted. Also, in order to receive radio waves of a frequency that resonates with this and detect it as the Japanese syllabary character, nine types of Japanese syllabary a to la (9 YA line) and five kinds of frequencies of the Japanese syllabary of the Japanese syllabary are combined to form one character (for example, "A" for A line, "A" for Sa line, and U line for SA line). In this case, it is necessary to incorporate two types of LC resonance circuits that radiate radio waves of different resonance frequencies in one braille tile 20 in order to be able to detect as "s". Further, since the braille tiles 20 are laid adjacent to each other, the detection area of the radio wave radiated from each LC resonance circuit in the two sets of the braille tiles 20 is within the size range of the braille tiles 20 and effective detection is performed. It is necessary to cover the area to be covered.

Therefore, a recess 23 is provided in the lower center of the Braille tile 20, and a substrate 24 made of a dielectric or an insulator in which two LC resonant circuits are formed is disposed in the recess 23. Then, a ceramic reinforcing plate 25 is bonded and integrated with an epoxy adhesive 26 so as to cover the substrate 24. The substrate 24 made of a dielectric or an insulator
Although a substrate made of glass, ceramics, synthetic resin film, or the like can be used, in the present embodiment, an example using a ceramic substrate will be described.

On the surface of the ceramic substrate 24, a first coil L _C1 and a second coil L _C2 forming the inductance of the LC resonance circuit are formed by printed wiring. Further, two sets of a pair of metal plates are arranged on the upper and lower surfaces of the ceramic substrate 24 to form the first capacitor C _C1 and the second capacitor C _C2 which form the capacitance of the LC resonance circuit, and are formed on the upper surface. Each metal plate is connected to one end of each coil, and each metal plate formed on the lower surface is connected to the other end of each coil. As a result, as shown in FIG. 5C, the first
A second LC resonance circuit including the coil L _C1 and the first capacitor C _C1 and a third LC resonance circuit including the second coil L _C2 and the second capacitor C _C2 are formed.

FIG. 6 shows the second LC on the ceramic substrate 24.
It is a figure which shows the example which forms a resonance and a 3rd LC resonance circuit.
FIG. 6A shows a substrate 2 that includes a second LC resonance circuit 20a that radiates a resonance frequency of one of nine kinds indicating the Japanese syllabary A to L rows.
4 is formed and arranged in a square shape in the center of the inside of No. 4, and a third LC resonance circuit 20b that radiates a resonance frequency of one of the five kinds indicating the Japanese syllabary of the Japanese syllabary is formed and arranged on the outer periphery thereof. 6 (b) is a sectional view thereof. In addition, FIG. 6C shows one of nine kinds of Japanese syllabary lines A to L.
The second LC resonance circuit 20a that radiates one resonance frequency is formed in a spiral shape in the center of the inside of the substrate 24 and arranged, and radiates one resonance frequency out of five kinds indicating the Japanese syllabary. The third LC resonance circuit 20b is arranged on the outer periphery of the third LC resonance circuit 20b.

The second LC resonance circuit 20a has 5
The resonance frequency of .about.26 MHz is used, the inductance of the coil L _c1 is 0.25 to 4 μH, and the capacitance of the capacitor C _c1 is 150 to 250 pF. In addition, the third LC resonance circuit 20b has 30 to 6
The resonance frequency of 0MHz is used, and the coil L
The inductance of _c2 is 0.15 to 0.20 μH,
The capacitance of the capacitor C _c2 is 50 to 150 pF.

On the other hand, the signs of Braille for voiced sounds, semi-voiced sounds, Japanese sounds, numbers, etc. are, as shown in FIG.
The voiced sound, the semi-voiced sound, the Japanese sound, which is placed to the left of this Kiyoon Braille,
Braille for signs such as numbers (for example, in the case of dull sounds, the second column, the second
The auxiliary tile 30 of the present embodiment is formed integrally by arranging a convex portion corresponding to the Braille code on the upper surface of the auxiliary tile 30. It is arranged on the left side of the braille tile 20.

As the auxiliary tile 30 of this embodiment, a ceramic tile having excellent crack resistance, freeze resistance and chemical resistance is used, and the auxiliary tile 30 is formed in a square shape with one side of 15 cm. 8A and 8B are views showing an example of the structure of the auxiliary tile 30, FIG. 8A is a top view, and FIG.
A sectional view is shown in FIG. 8A, and FIG. 8C shows the fourth LC resonance circuit. The auxiliary tile 30 in FIG. 8 is an auxiliary tile 3 indicating a dull sound.
0 and the upper surface of the auxiliary tile 30 has a second row of the second row.
The convex portions 31 are arranged in rows, and the linear convex portion 32 indicating the reading direction is provided in the central portion (between the first column and the second column) of the third row (bottom row).
Are formed integrally with each other.

Here, as apparent from FIG. 7, when the auxiliary tile 30 is laid upside down, the auxiliary tile 30
When the Braille code pattern formed by each convex portion 31 on the surface of the disk rotates, and is read as Braille, for example, the semi-voiced code is the Japanese syllabary "A" and the number code is the Japanese syllabary. It becomes impossible to read the correct code by changing to "ne". Moreover, even if all the auxiliary tiles 30 are laid correctly in the vertical direction, if they are read from the opposite direction, they cannot be read correctly. Therefore, in this embodiment, a linear convex portion 32 having a low height, a narrow width, and a short length is provided in the central portion of the lowermost stage of the auxiliary tile 30 and is laid so that the lowermost stage is downward. are doing. As a result, according to the position of the linear convex portion 32 in the lowermost stage, it becomes possible to easily grasp the lowermost stage and the center position of the point of the Braille and read the Braille code correctly. The height of each of the convex portions 31 and 32 is about 6 mm.

Each auxiliary tile 30 has a dull sound, a semi-voiced sound, a whisper,
In order to detect radio waves having different resonance frequencies corresponding to codes such as numbers by the induction device 40 and sound them as voice,
Each of the fourth LC resonance circuits has a built-in fourth LC resonance circuit that resonates with a radio wave of a predetermined frequency corresponding to each code transmitted from the induction device 40 and emits a radio wave of a different resonance frequency.

Therefore, a concave portion 33 is provided in the lower central portion of the auxiliary tile 30 and a fourth concave portion is formed in the concave portion 33.
A substrate 34 made of a dielectric or an insulator on which an LC resonance circuit is formed is arranged, and a ceramic reinforcing plate 35 is bonded and integrated with an epoxy adhesive 36 so as to cover the substrate 34. The substrate made of a dielectric material or an insulating material may be a substrate made of glass, ceramics, synthetic resin film, or the like. In the present embodiment, an example using a ceramic substrate will be described.

On the surface of the ceramic substrate 34, the fourth L
The coil L _C forming the inductance of the C resonance circuit is formed by printed wiring. In addition, a pair of metal plates are arranged on the upper and lower surfaces of the ceramic substrate 34 to form a fourth LC.
A capacitor C _C forming the capacitance of the resonance circuit is formed, the metal plate formed on the upper surface is connected to one end of the coil, and the metal plate formed on the lower surface is connected to the other end of the coil. As a result, as shown in FIG.
_A fourth LC resonance circuit including _C and the capacitor C _C is formed. Note that the fourth LC resonance circuit has a 35
The resonance frequency of -60 MHz is used, the inductance of the coil L _c is 0.2 to 0.15 μH, and the capacitance of the capacitor C _c is 50 to 150 p.
F.

FIG. 9 is a diagram showing an example of a case where the above-mentioned pictographic tile 10, braille tile 20 and auxiliary tile 30 are arranged in combination on a walking road surface. FIG. 9B is a diagram showing an example of arranging the tiles 10, 20, 30 in combination at a stepped portion, and the meaning of each Braille tile 10, 20, 30 is recognized based on this example. An example will be described. After a visually impaired person such as a blind person stops at the stop / confirmation pictogram tile 10a, he / she rides on the pictogram tile 10g arranged above it and confirms that there is a wide rectangular convex portion 16 " Recognize that it is a 10g pictogram tile for "stairs / steps".

Next, the stop / confirmation pictogram tile 10a
After touching the Braille tile 20a arranged on the upper right side of the table and recognizing that it is the Japanese syllabary "a", touch the Braille tile 20b arranged on the right side of the Braille tile 20a. Recognize that Then, after touching the auxiliary tile 30a arranged on the right side and recognizing that it is a dumb sound of the Braille code, the Braille tile 2 arranged on the right side
Touch 0c and recognize that it is the Japanese syllabary “ta”. Since the “ta” is in front of the Braille code, it is recognized as “da”. Furthermore, after touching the Braille tile 20d arranged on the right side of the tile and recognizing that it is the Japanese syllabary "n", stop /
Returning to the confirmation pictogram tile 10a, the Braille tile 20e arranged on the upper right side of the tile is touched to recognize that it is the Japanese syllabary "no".

After that, after touching the auxiliary tile 30b arranged on the right side and recognizing that it is a dazzling sound of the Braille code, the Braille tile 20f arranged on the right side is touched and the Japanese syllabary "e". Is recognized, and since the character in front of this “e” is the voiced sound of the Braille code, it is recognized as “b”. Further, touching the Braille tile 20g arranged on the right side of the tile, recognize that it is the Japanese syllabary "Lu", and confirm that it is "I""Ji""Da""N".
It can be seen that it means "no", "bo", and "ru". Similarly, the braille tiles in FIG. 9 (a) are “e”, “ki”, and “ma”.
“E”, “Mi”, “Na”, “Mi”, and the braille tiles in FIG. 9C are “Si”, “Ba”, “Su”, “E”, “Ki”, “Ma”, “E”.
It becomes "ki""ta""ma""wa""ri", and each braille tile of FIG. 9 (d) is "e""ki""bi""ru""ni""shi".
You can see that it becomes "gu" and "chi".

FIG. 10 is a schematic view showing the entire construction of a guiding device 40 for guiding a pedestrian such as a blind person by voice along a walking path in which the tiles 10, 20, 30 are arranged.
Is a block circuit diagram thereof. The guiding device 40 includes a transmitting unit 41, a receiving unit 42, a control unit 44, a voice converting unit 45, a power supply unit 46a for supplying power to each of these units 41, 42, 44, 45, and the like, and a guiding unit body 40a. The transmitting antenna 5 connected to the transmitting unit 41 of the guiding device body 40a
1 and a wand 50 having a receiving antenna 52 connected to the receiving unit 42, and a radio wave having a resonance frequency detected by being connected to the guiding device main body 40a is converted into an audio signal by the guiding device main body 40a to generate a sound. The audio output unit 60 includes a speaker and headphones.

The transmitter 41 oscillates into waveforms of 14 kinds of frequencies from f _{1 to} f ₁₄ and sequentially outputs at a constant period, and an oscillator (not shown) that modulates the waveforms sequentially output from the oscillator into pulse waves. The transmission antenna 51 transmits the pulse waves of frequencies f _{1 to} f ₁₄ output from the modulator. Note that f
The frequencies _{1 to} f ₁₄ are the same as those of the tiles 10, 20, and 3 described above.
5 to 60 MHz, where the lowest frequency at which each LC resonance circuit of 0 resonates is 5 MHz and the highest frequency is 60 MHz.
It is used by dividing it into 14 different frequencies.

The receiving unit 42 uses the tiles 10 and 2 described above.
Any one of the LC resonant circuits 0 and 30 resonates with the radio waves of frequencies f _{1 to} f ₁₄ transmitted from the transmitter 41, and the radio wave radiated from any LC resonant circuit that resonates is received by the receiving antenna. The received resonance frequency is output to the control unit 44 for identification.

The control section 44 mainly includes a CPU, a ROM, and an R.
The transmitting unit 4 includes an AM (memory M _A and memory M _B ), a microcomputer including an interface, and the like.
1 and the operation of the receiving unit 42 are controlled, and the radio waves received by the receiving unit 42 are transmitted by the transmission unit 41 from f ₁ to
An identification unit is provided for determining which frequency of the radio waves up to f ₁₄ has been received.

The voice converting unit 45 has a map in which voice data corresponding to the numerical data is stored in advance, and converts the voice data into a voice signal based on the numerical data sent from the control unit 44.

The canes 50 are sequentially output from the transmitter 41 f
₁ ~f a transmitting antenna 51 that transmits signals of frequency up to _14, one of the LC of each tile 10, 20, 30 resonates in the radio wave Izuka the radio wave frequency to the f ₁ ~f ₁₄ The reception unit 42 receives the radio waves radiated from the resonance circuit.
And a receiving antenna 52 for sending to the antenna. These antennas 51 and 52 are each formed of a coil wound around the lower portion of the cane 50 in a double manner.

The voice output unit 60 includes a speaker, headphones,
Each tile 10, 20, 30 is composed of an earphone or the like and converts the voice signal converted by the voice conversion unit 45 into a voice.
The voice corresponding to the content of will be emitted.

FIG. 12 is a diagram showing the correspondence relationship between the resonance frequency and the numerical code. The resonance frequencies f _{1 to} f ₁₄ , the numerical code corresponding to this resonance frequency, and each tile 10,
It means the meaning of 20, 30. Figure 2
The 1LC resonant circuit of stopping and confirmation of pictograms tile 10a in (a) is to resonate the electromagnetic wave of a frequency of f ₅ the transmitter 41 has transmitted radiates radio waves of the resonance frequency of f _5, resonance of the f ₅ When the receiving unit 42 receives the radio wave, the control unit 44 sends the numerical value of 2 ⁴ to the voice converting unit 45, and the voice converting unit 45 outputs the voice corresponding to the numerical value of 2 ⁴ from the pre-stored map "Stop / Confirm." The audio signal "" is selected and sent to the audio output unit. As described above, each LC resonance circuit of each pictographic tile 10 shown in FIG. 2 is assigned each resonance frequency of f _{1 to} f ₁₀ .

In the auxiliary tile 30, the fourth LC resonance circuit of the auxiliary tile 30 representing the sign of the dull sound is transmitted by the transmitter 41.
There radiates radio waves of the resonance frequency of f ₁₁ resonates to a radio wave of a frequency of f ₁₁ that transmitted, the receiving unit 42 the resonance waves of the f ₁₁
When received by the control unit 44, the control unit 44 converts the numerical value of 2 ¹⁰
The voice conversion unit 45 selects the voice signal "dumb sound" from the pre-stored map and outputs the voice corresponding to the numerical value 2 ¹⁰ to the voice output unit. Similarly, the fourth LC resonance circuit of the auxiliary tile 30 representing the sign of the semi-voiced sound emits a radio wave having a resonance frequency of f ₁₂ , and the fourth LC resonance circuit of the auxiliary tile 30 representing the sign of a whistle produces a radio wave having a resonance frequency of f ₁₃ . The fourth LC resonance circuits of the auxiliary tiles 30, which represent numerical symbols, respectively radiate radio waves having a resonance frequency of f ₁₄ .

On the other hand, the Braille tile 20 is provided with a second LC resonance circuit 20a showing a row of the Japanese syllabary and a third LC resonance circuit 20b showing a row of the Japanese syllabary, for example, "A". , The second LC resonance circuit 20a of the Braille tile 20 radiates a radio wave having a resonance frequency of f ₁ , and
The third LC resonance circuit 20b radiates a radio wave having a resonance frequency of f ₁₀ . When the receiving unit 42 receives the resonance radio waves of f ₁ and f ₁₀ , the control unit 44 adds the numerical value of 2 ⁰ and 2 ⁹ (2 ⁰ +
2 ⁹ ) to the voice conversion unit 45, and the voice conversion unit 45 selects the voice signal “A” from the previously stored map for the voice corresponding to the numerical value of (2 ⁰ +2 ⁹ ) and outputs it to the voice output unit. It will be sent.

Next, the operation of the guiding device 40 of the present embodiment configured as described above will be explained based on the block diagram of FIG. 11 and the flow charts of FIGS. 13, 14 and 15. Note that FIGS. 13, 14, and 15 are flowcharts showing the operation of the guidance device 40 of the present embodiment, and the program corresponding to this flowchart is stored in advance in the ROM of the microcomputer of the control unit 44.

When a pedestrian such as a blind person carries the guiding device 40 and turns on a power switch (not shown), the microcomputer starts executing the program in step 100. Then, the microcomputer resets the built-in counter in step 102,
At 04, the data stored in the memory M _B is reset,
At step 106, the data stored in the memory M _A is reset to erase the contents stored therein.

Next, in step 108, the microcomputer outputs a transmission start signal to the transmission section 41 to start the transmission operation of the transmission section 41, and at the same time, the reception section 4
The reception start signal is output to 2 and the reception operation of the reception unit 42 is started. As a result, the radio waves of frequencies f _{1 to} f ₁₄ are sequentially transmitted from the transmitter 41 to the LC resonance circuit of any of the tiles 10, 20, and 30 at the bottom of the cane 50 through the transmitting antenna 51. On the other hand, the resonant wave of f ₁ ~f ₁₄ emitted from any of the LC resonant circuit of tiles 10, 20 and 30 that resonate Izu of radio frequencies f ₁ ~f ₁₄ is received through the receiving antenna 52 It will be sequentially received by the unit 42.

Upon proceeding to step 110, the microcomputer determines that the radio waves sequentially received at step 108 are f
It is determined which of the frequencies _{1 to} f ₁₄ is the radio wave. If no radio waves of frequencies f _{1 to} f ₁₄ are received, it is determined as “No” in step 110, the process proceeds to step 110 a, the count value of the counter reset in step 102 is incremented, and step 11
Move to 0b. When the process proceeds to step 110b, the microcomputer counts the count value of the counter N incremented in step 110a N times (note that N times is 2 to 4).
It is determined whether or not the number of times has been set).

If it has not reached N times, step 110
When it is determined as “No” in b, the process returns to step 108, and the processes from step 108 to step 110 are repeatedly executed. When the count value incremented at step 110a reaches N times while repeatedly performing the processing from step 108 to step 110, that is, f ₁ to Since no radio wave of the frequency of f ₁₄ can be received, it is determined to be “Yes” in step 110b, and the process proceeds to step 110c. In step 110c, the microcomputer sends numerical data corresponding to the abnormality to the voice converter 45. Then, the voice conversion unit 45 reads the voice data corresponding to this numerical value from the map, and, for example, outputs the voice "undetectable" from the voice output unit 60, prompting the pedestrian to proceed to the next tile.

On the other hand, when the radio wave having any of the frequencies f _{1 to} f ₁₄ is received, it is determined to be “Yes” in step 110, and the process proceeds to step 112. When the process proceeds to step 112, the microcomputer converts the frequency of the received radio wave into a numerical value corresponding to the received frequency based on the map (see the table of FIG. 12), and also converts this numerical value into a predetermined address of the memory M _A. To memorize. For example, cane 50
The tile on which is placed is "Stop / Confirm" of the pictogram tile 10a.
If it is, the reception frequency is because it is f _5, and converted to a number of 2 ⁴ and stores the number 2 ⁴ to a predetermined address of the memory M _A. Further, when the tile was placed wand 50 is a Braille tile 20 indicating the "I", the received frequency f ₁ and f ₁₁
Since it is, 2 ⁰ and 2 ¹⁰ and converted to a number obtained by adding (2 ⁰ +2 ¹⁰⁾ is allowed to store this number (2 ⁰ +2 ¹⁰⁾ in a predetermined address of the memory M _A. Moreover, the tile placing the wand 50 is an auxiliary tile 30 indicating the dullness code, a predetermined address in because the reception frequency is f _11, the numerical value 2 ¹⁰ is converted into 2 ¹⁰ value of the memory M _A To memorize.

Next, in step 114, the microcomputer determines whether the numerical data stored in the predetermined address of the memory M _A is the numerical data corresponding to only the frequencies f _{1 to} f ₁₄ . Here, the first of the emoji tile 10
When receiving the radio wave radiated from the LC resonance circuit or the fourth LC resonance circuit of the auxiliary tile 30, the frequency f ₁ to
Since it is only the radio wave of f ₁₄ , the numerical value of any one of 2 ⁰ to 2 ¹³ will be stored in the predetermined address of the memory M _A , so that it is determined as “Yes” in step 114 and step 116 is performed. Move to. On the other hand, when receiving the radio waves radiated from the second and third LC resonant circuits of the Braille tile 20, two radio waves of frequencies f _{1 to} f ₉ and f _{10 to} f ₁₄ are received. because, 2 ^{0-2 8} 2 ^9-2
Since the sum of the numerical values of ¹³ will be stored in the predetermined address of the memory M _A , it is determined as “No” in step 114 and the process proceeds to step 120.

At step 116, the microcomputer determines whether the numerical data stored in the predetermined address of the memory M _A is 2 ⁹ or less. Here, when the electric wave radiated from the first LC resonance circuit of the pictogram tile 10 is received in step 110, the numerical data stored in the predetermined address of the memory M _A is 2 ⁹ or less, so in step 116, “Yes”. It is determined that step 118
Move to The fourth of the auxiliary tile 30 in step 110
When the radio wave radiated from the LC resonance circuit is received, the numerical data stored in the predetermined address of the memory M _A becomes larger than 2 ⁹ , and therefore, the determination at step 116 is “No”, and the routine proceeds to step 124.

On the other hand, in step 108, the Braille tile 20
When the resonance radio waves radiated from the second and third LC resonance circuits of No. 3 are received, the determination is “No” in Step 114, and the process proceeds to Step 120, the microcomputer stores the numerical value stored in the predetermined address of the memory M _B. It is determined whether or not there is data. Here, if the radio wave from the auxiliary tile 30 is not received before the radio wave from the Braille tile 20 this time, the numerical data is not stored in the memory M _B , so “No” in step 120. Then, the process proceeds to step 122. If the radio wave from the auxiliary tile 30 is received before the radio wave from the braille tile 20 is received this time, the numerical data is stored in the memory M _B, and thus it is determined as “Yes” in step 120. Control goes to step 146.

At step 118, the microcomputer sends to the voice converting section 45 the numerical data stored in the memory M _A at step 112 (in this case, any of 2 ⁰ to 2 ⁹ ). Then, the voice conversion unit 45 reads the voice data corresponding to this numerical value from the map and converts it into a voice signal. As a result, a voice corresponding to the pictographic tile 10, for example, a voice “Stop / Confirm” is emitted from the speaker of the voice output unit 60, and the process returns to step 104 to repeat the above-described processing.

When the determination at step 120 is "No" and the routine proceeds to step 122, the microcomputer causes the voice converting unit 45 to store the numerical data (in this case, 2 ^{0 in} this case) stored in a predetermined address of the memory M _A at step 112. The sum of ~ 2 ^{8 and} any of 2 ⁹ -2 ¹³ ). Then, the voice conversion unit 45 reads the voice data corresponding to this numerical value from the map and converts it into a voice signal. As a result, the speaker of the voice output unit 60 outputs a voice corresponding to the clear sound of the Braille tile 20, for example, a voice of "ri",
Returning to step 104, the above processing is repeatedly executed.

When it is judged "No" at step 116 and the routine proceeds to step 124, the microcomputer judges whether the numerical data stored at the predetermined address of the memory M _A is 2 ¹⁰ . Here, if the frequency received in step 108 is the auxiliary tile 30 of the dull sound code with the frequency f ₁₁ and the numerical data stored in the predetermined address of the memory M _{A in} step 112 is 2 ¹⁰ , "Yes". Then, the process proceeds to step 126. If the numerical data stored in the predetermined address of the memory M _A is not 2 ¹⁰ , then step 130
Move to

[0071] After the transition to step 126, the microcomputer by storing numerical data 2 ¹⁰ stored in a predetermined address of the memory M _A in a predetermined address of the memory M _B, the process proceeds to step 128. Moving to step 128,
The microcomputer sends to the voice converting unit 45 the numerical value 2 ¹⁰ stored in the predetermined address of the memory M _A. Then, the voice conversion unit 45 reads the voice data corresponding to the numerical value 2 ¹⁰ from the map and converts it into a voice signal. This allows
A speaker corresponding to the auxiliary tile 30, for example, a voice saying "dull sound" is emitted from the speaker of the voice output unit 60, and the process returns to step 106 to repeat the above-described processing.

When the determination at step 124 is "No" and the routine proceeds to step 130, the microcomputer determines whether or not the numerical data stored at the predetermined address of the memory M _A is 2 ¹¹ . Here, if the frequency received in step 108 is the auxiliary tile 30 of the semi-voiced code with the frequency f ₁₂ , and the numerical data stored in the predetermined address of the memory M _{A in} step 112 is 2 ¹¹ , “Yes”. , ”And the process proceeds to step 132. If the numerical data stored in the predetermined address of the memory M _A is not 2 ¹¹ , step 13
Go to 6.

At the step 132, the microcomputer stores the numerical value data 2 ¹¹ stored at the predetermined address of the memory M _{A at} the predetermined address of the memory M _B , and proceeds to step 134. Moving to step 134,
The microcomputer sends to the voice converting unit 45 the numerical value 2 ¹¹ stored in the predetermined address of the memory M _A. Then, the voice conversion unit 45 reads the voice data corresponding to the numerical value 2 ¹¹ from the map and converts it into a voice signal. As a result, a voice corresponding to the auxiliary tile 30, for example, a voice "half-voiced sound" is emitted from the speaker of the voice output unit 60, and the process returns to step 106 and the above-described processing is repeated.

When it is judged "No" at step 130 and the routine proceeds to step 136, the microcomputer judges whether the numerical data stored at the predetermined address of the memory M _A is 2 ¹² . Here, if the frequency received at step 108 is the auxiliary tile 30 of the chord sound with the frequency f ₁₃ and the numerical data stored at the predetermined address of the memory M _A at step 112 is 2 ¹² , “Yes”. Then, the process proceeds to step 138. If the numerical data stored in the predetermined address of the memory M _A is not 2 ¹² , step 142.
Move to

[0075] After the transition to step 138, the microcomputer is a numerical data 2 ⁰ is stored in a predetermined address of the memory M _B, the process proceeds to step 140. Step 14
When it shifts to 0, the microcomputer converts the voice conversion unit 4
The numerical value 2 ¹² stored in a predetermined address of the memory M _A is sent to the memory 5. Then, the voice conversion unit 45 reads the voice data corresponding to the numerical value 2 ¹² from the map and converts it into a voice signal. As a result, the speaker of the sound output unit 60 emits a sound corresponding to the auxiliary tile 30, for example, a sound “is a whine”, and returns to step 106 to repeat the above-described processing.

At step 142, the microcomputer causes the numerical data 2 ¹³ stored at the predetermined address of the memory M _A to be stored at the predetermined address of the memory M _B , and then proceeds to step 144. Moving to step 144,
The microcomputer sends to the voice converting section 45 the numerical value 2 ¹³ stored in the predetermined address of the memory M _A. Then, the voice converting unit 45 reads the voice data corresponding to the numerical value 2 ¹³ from the map and converts it into a voice signal. This allows
A voice corresponding to the auxiliary tile 30, for example, a voice "a number" is emitted from the speaker of the voice output unit 60, and the process returns to step 106 to repeat the above-described processing.

This time, the second and third L of the braille tile 20
Before receiving the radio wave radiated from the C resonance circuit, the radio wave radiated from the fourth LC resonance circuit of the auxiliary tile 30 has already been received, and any one of step 126, step 132, step 138, and step 142 If the numerical data has already been stored in the memory M _B at, the determination of “Yes” is made at step 120 and the process proceeds to step 146. Then, the microcomputer has a memory M _B
It is determined whether the numerical data stored in the predetermined address of 2 is 2 ¹⁰ . Here, if the numerical data stored in the predetermined address of the memory M _B is 2 ^10, it is determined to be “Yes” and the process proceeds to step 148. When the numerical data stored in the predetermined address of the memory M _B is not 2 ¹⁰ , it is determined as “No” and the process proceeds to step 150.

At step 148, the microcomputer stores the numerical data of the memory M _A stored at step 112, for example, the numerical data (2 ⁵ +2 ¹⁰ ) for the braille tile 20 of "hi" and the muddy sound of the auxiliary tile 30. The coded numerical value data 2 ¹⁰ is added, and the added numerical value data (2 ⁵ +2 ¹⁰ +2 ¹⁰ ) is sent to the voice conversion unit 45. Then, the voice conversion unit 45 uses this numerical value (2 ⁵ +2 ¹⁰ +2 ¹⁰ ).
The voice data corresponding to is read from the map and converted into a voice signal. As a result, the speaker of the voice output unit 60 emits a voice corresponding to the Braille tile 20 and the auxiliary tile 30, for example, a voice "Bi", and returns to step 104 to repeat the above-described processing.

When it is judged "No" at step 146 and the routine proceeds to step 150, the microcomputer judges whether the numerical data stored at the predetermined address of the memory M _B is 2 ¹¹ . Here, if the numerical value data stored in the predetermined address of the memory M _B is 2 ^11, it is determined to be “Yes” and the process proceeds to step 152. If the numerical data stored in the predetermined address of the memory M _B is not 2 ¹¹ , then “N
It is determined to be “o” and the process proceeds to step 154.

In step 152, the microcomputer stores the numerical data of the memory M _A stored in step 112, for example, in the case of the braille tile 20 of "hi", the numerical data (2 ⁵ +2 ¹⁰ ) and half of the auxiliary tile 30. The numerical data 2 ¹¹ of the dakuon code is added, and the added numerical data (2 ⁵ +2 ¹⁰ +2 ¹¹ ) is sent to the voice conversion unit 45. Then, the voice conversion unit 45 uses this numerical value (2 ⁵ +2 ¹⁰ +2 ¹¹ ).
The voice data corresponding to is read from the map and converted into a voice signal. As a result, the speaker of the audio output unit 60 emits a sound corresponding to the Braille tile 20 and the auxiliary tile 30, for example, a sound such as “pi”, and returns to step 104 to repeat the above-described processing.

When the determination at step 150 is "No" and the routine proceeds to step 154, the microcomputer determines whether or not the numerical data stored in the predetermined address of the memory M _B is 2 ⁰ . Here, if the numerical data stored in the predetermined address of the memory M _B is 2 ^0, it is determined to be “Yes” and the process proceeds to step 156. If the number data stored in a predetermined address of the memory M _B is not 2 ⁰ "No"
Then, the process proceeds to step 158.

At step 156, the microcomputer stores the numerical data of the memory M _A stored at step 112, for example, the numerical data (2 ⁵ +2 ⁹ ) for the braille tile 20 of “C” and the sound of the auxiliary tile 30. Signed numerical data 2 ⁰ and this added numerical data (2 ⁵
+2 ⁹ +2 ⁰ ) is sent to the voice conversion unit 45. Then, the voice conversion unit 45 reads the voice data corresponding to this numerical value (2 ⁵ +2 ⁹ +2 ⁰ ) from the map and converts it into a voice signal. As a result, the speaker of the audio output unit 60 emits a voice corresponding to the Braille tile 20 and the auxiliary tile 30, for example, a voice "Hya", and returns to step 104 to repeat the above-described processing.

When the process proceeds to step 158, the microcomputer stores the numerical data of the memory M _A stored in step 112, for example, “A” (the braille “A” and the numeral “1” are clear from FIGS. 4 and 7. In the case of braille tiles 20 that have the same braille, the numerical data (2 ⁰ +
2 ⁹ ) and the numerical data 2 ¹³ of the numeral code of the auxiliary tile 30 are added, and the added numerical data (2 ⁰ +2 ⁹ +2 ¹³ )
To the voice conversion unit 45. Then, the voice conversion unit 45
Reads the audio data corresponding to this numerical value (2 ⁰ +2 ⁹ +2 ¹³ ) from the map and converts it into an audio signal. As a result, the speaker of the audio output unit 60 utters a voice corresponding to the Braille tile 20 and the auxiliary tile 30, for example, a voice of the number "1", and returns to step 104 to repeat the above-described processing.

Next, the guiding device 4 of the present embodiment described above.
As shown in FIG. 9B, a specific example of the operation of 0
The case where 0, 20, and 30 are provided will be described as an example. First, pedestrians such as blind people "stop / confirm" pictogram tile 1
By riding on 0a, it recognizes that it is the "stop / confirm" pictogram tile 10a and stops. On the other hand, radio waves of frequencies f _{1 to} f ₁₄ are transmitted from the transmitter 41 in step 108 through the transmitting antenna 51 of the cane 50 on the pictogram tile 10a (for example, within 5 cm), and the radio waves are arranged in the pictogram tile 10a. When the first LC resonance circuit resonates with a radio wave having a frequency of f ₅ among these radio waves and radiates a radio wave having a resonance frequency of f ₅ , the receiving unit 42 transmits the radio wave having a resonance frequency of f ₅ through the receiving antenna 52. To receive. Then, in step 112, the numerical value 2 ⁴ corresponding to the resonance frequency of f ₅ is stored in a predetermined address of the memory M _A. Since the numerical value 2 ⁴ stored in the predetermined address of the memory M _A is 2 ⁹ or less, it is determined to be “Yes” in step 116, and the audio conversion unit 45 outputs the audio data corresponding to 2 ⁴ in step 118. Output, and "Stop / Confirm" from the speaker of voice output unit 60
Utters the sound.

Then, a pedestrian can see the "stairs /
When the cane 50 is placed on the "step" pictogram tile 10g, a radio wave having a resonance frequency of f ₇ is received in step 108 and f ₇ is received.
Since the numerical resonance frequency is 2 ^6, step 116
It is determined to be "Yes" at step 118, and the voice of "Stairs / steps" is emitted from the speaker of the voice output unit 60 at step 118. Then, the "Stop / Confirm" pictogram tile 10a
When the cane 50 is placed on the braille tile 20a on the upper right side of, the radio waves having the resonance frequencies of f ₁ and f ₁₁ are received in step 108. Since radio waves having two resonance frequencies of f ₁ and f ₁₁ have been received, it is determined to be “No” in step 114.
In this case, since there is no data stored in the predetermined address of the memory M _B , it is determined as “No” in step 120, and in step 122, the voice conversion unit 45 causes the voice conversion unit 45 to obtain the resonance frequency values 2 ⁰ and f of f _{1. The} voice data corresponding to the sum of the numerical values 2 ¹⁰ of the resonance frequency of ₁₁ is output, and the voice of "a" is emitted from the speaker of the voice output unit 60.

Next, when the staff 50 is placed on the braille tile 20b on the right side of the braille tile 20a, step 108 is performed.
At, a radio wave having a resonance frequency of f _{4 and} a resonance frequency of f ₁₁ is received. Since radio waves having two resonance frequencies of f ₄ and f ₁₁ have been received, it is determined to be “No” in step 114. Also in this case, since there is no data stored in the predetermined address of the memory M _B , it is determined to be “No” in step 120, and the voice conversion unit 45 determines that the resonance frequency value of f ₄ is 2 ³ in step 122. The sound data corresponding to the sum of the numerical values 2 ¹⁰ of the resonance frequency of f ₁₁ is output, and “H” is output from the speaker of the sound output unit 60.
Utters the sound.

Then, the staff 50 is placed on the auxiliary tile 30a on the right side of the braille tile 20b, and step 108 is performed.
Receives a radio wave having a resonance frequency of f ₁₁ . Since the numerical value corresponding to the resonance frequency of f ₁₁ is 2 ¹⁰ and is larger than 2 ⁹ , it is determined to be “No” in step 114 and “Yes” in step 124. Thereafter, in step 126, since there is no data stored in the predetermined address of the memory M _B also in this case, the numerical value 2 ¹⁰ corresponding to the resonance frequency of f ₁₁ is set in the predetermined address of the memory M _B in step 120. To memorize
In step 128, the voice conversion unit 45 outputs the voice data corresponding to the numerical value 2 ¹⁰ of the resonance frequency of f ₁₁ , and the voice of the voice output unit 60 emits the voice of “dumb sound”.

Then, the cane 50 is placed on the braille tile 20c on the right side of the auxiliary tile 30a, and step 108 is performed.
Receives radio waves having two resonance frequencies of f ₄ and f ₁₀ .
Since radio waves with two resonance frequencies of f ₄ and f ₁₀ were received,
In step 114, it is determined as “No”. In this case, since the numerical value 2 ¹⁰ corresponding to the resonance frequency of f ₁₁ , that is, the numerical value corresponding to the dull sound is stored in the memory M _B in the previous step 126, it is determined “Yes” in step 120,
Since this numerical value is 2 ¹⁰ , in step 146, "Yes
s ”. Thereafter, in step 122, the voice conversion unit 45 outputs the voice corresponding to the sum of the numerical value 2 ¹⁰ of the resonance frequency of f ₁₁ , the numerical value 2 ³ of the resonance frequency of f ₄ , and the numerical value 2 ⁹ of the resonance frequency of f _10. The data is output, and the voice of the voice output unit 60 is uttered as "Dah".

Further, when the walking stick 50 is placed on the braille tile 20d arranged on the right side of the braille tile 20c, radio waves having two resonance frequencies f ₈ and f ₁₃ are received in step 108. Since the radio waves having the two resonance frequencies f ₈ and f ₁₃ have been received, it is determined to be “No” in step 114. In this case, since the numerical value 2 ¹⁰ corresponding to the resonance frequency of f ₁₁ stored in the predetermined address of the memory M _{B in} the previous step 102 has been reset, it is determined to be “No” in step 120, At 122, the audio conversion unit 45 outputs audio data corresponding to the sum of the resonance frequency value 2 ⁷ of f _{8 and} the resonance frequency value 2 ¹² of f ₁₃ , and the speaker of the audio output unit 60 calls “n”. Make a sound.

Similarly, the cane 5 is placed on the braille tile 20e.
By putting 0, "no" is pronounced and the auxiliary tile 30
By placing the cane 50 on the b and the braille tiles 20f, the "b" is pronounced, and by placing the cane 50 on the braille tiles 20g, the "le" is pronounced.

As described above, the first LC resonant circuit of the pictographic tile 10 and the fourth LC of the auxiliary tile 30 of this embodiment are arranged.
A tile 10 including only 14 types of LC resonance circuits that radiate the resonance frequencies f _{1 to} f _{14 that} are the minimum necessary to minimize the detection time of the resonance frequency.
I'm using 30. That is, the number of pictographic tiles 10 is set to 10 and the resonance frequencies f _{1 to} f ₁₀ are assigned to the auxiliary tiles 3.
Resonance frequencies f _{11 to} f ₁₄ are assigned to 0 of four types. In addition, in the Braille tile 20 indicating the Japanese syllabary, the resonance frequencies of f _{1 to} f ₉ are assigned to the 9 types representing the rows from A to LA, and the f _{10 to the} 5 vowels from the A to O stages. Resonance frequencies of ~ f ₁₄ are assigned. It should be noted that there is no less than Wa row because Ya row is only Ya Yu Yo and there are two vacant seats, so Wa row is assigned here and wo is the same sound as O when converting voice. By using this together, all the Japanese syllabary is converted.

Then, as a result of testing the reception state of the radio wave radiated from each tile 10, 20, 30 using the above-mentioned guiding device 40, the resonance frequency used is 5 to 60M.
In the case of Hz, even if a water film or a metal piece is present on the upper surface of each tile 10, 20, 30, it was possible to sufficiently detect the radio wave at the resonance frequency. Further, the detection area was about 5 cm above each tile 10, 20, 30 and up to a radius of about 7 cm centered on each LC resonance circuit in the plane direction. From the above experimental results, it is appropriate to lay a 30 cm square pictogram type 10 indicating the road condition and walking method continuously or every other sheet. Braille type 20 indicating the current location, etc. Tile 30 is 1
If you lay 5 cm square one after another in a certain direction,
When receiving the radio wave radiated from each LC resonance circuit, even if the walking stick 50 does not directly contact the tiles 10, 20, 30 at a slightly elevated height (about 5 cm), about 1 second per second. It is possible to receive the radio wave even if the plate is horizontally moved at the rate of one sheet.

Furthermore, regarding the weather resistance of each tile 10, 20, 30 there was no abnormality in the tests of crack resistance, frost damage resistance, chemical resistance, etc. stipulated in JIS (A5209 ceramic tile). It was found that even at −20 ° C. to 110 ° C., which exceeds the temperature range of the detection tile, radio waves are normally radiated from each LC resonant circuit, and it can be used in any environment.

By installing the tiles 10, 20 and 30 of the present embodiment having the above-described configuration on the walking road surface and using the guiding device 40 of the present embodiment, the walking stick 50 is moved to the tiles 10, 20, and 30. The necessary information will be transmitted by voice quickly and accurately just by approaching 30, so the burden of grasping information such as road conditions and current position will be reduced, and attention will be paid accordingly. Being directed, it enables safe and reliable walking.

Further, each LC resonance circuit embedded in each tile 10, 20, 30 is simple and has an extremely small number of parts, is small and thin, can be easily formed integrally with the substrate, and is strong against vibration. Therefore, each of the tiles 10 in which this is embedded,
It can be buried without impairing the strength of the tiles 20, 30, and it is not necessary to make each tile 10, 20, 30 extra thick. In addition, since no electronic parts such as exhausting batteries and non-durable semiconductors are used, the structure is simple and highly reliable.
Moreover, the manufacturing method is simple, and the number of steps is small, so that the manufacturing cost is low.
Further, since it is not necessary to supply power, wiring is not necessary, and there is no need for special installation costs or running costs such as electricity bills. In addition, there is little deterioration in electrical characteristics, and stable operation can be obtained for a long period of time even under the influence of water, metal pieces, load, vibration, temperature difference, and radio noise. Furthermore, since maintenance is unnecessary, once installed, it can be used semi-permanently, and the cost-effectiveness is greatly improved, and it can be expected to be put to practical use.

If the guiding device 40 is not used, it is inferior in terms of time and simplicity for grasping information on road conditions, current position, etc., but only the convex pattern formed on the surface of each tile 10, 20, 30. The advantage is that it can convey more information than the tiles currently used. And, in order to supplement information, it is possible to add it to the already installed dot-shaped or line-shaped tiles and use it together, and it is optimal as a tile for the next-generation guidance system for the visually impaired.

In the above embodiment, an example in which each tile 10, 20, 30 is integrally formed with a base tile has been described, but each tile 10, 20, 30 is described.
It is also possible to separately form the base tile and the base tile, and integrate them with screws or the like. In this case, FIG.
As shown in FIG. 16 (the case of the braille tile 20 is shown), holes 27, 27, 27, 27 are provided in the braille tile 20. On the other hand, these holes 2 are formed in the base tile 28.
By providing screw holes at positions corresponding to 7, 27, 27, 27 and screwing the screws 29, 29, 29, 29, the Braille tile 20 and the base tile 28 are integrated. By doing this, if the town name changes,
The second LC resonant circuit and the third LC resonant circuit can be easily replaced in correspondence with the changed town name.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a visually impaired person guiding system according to the present invention.

FIG. 2 is a diagram showing an example of pictograms of a pictogram tile of the present invention.

FIG. 3 is a diagram showing an example of a structure of a pictographic tile according to the present invention.

FIG. 4 is a diagram for explaining Braille of the Japanese syllabary.

FIG. 5 is a diagram showing an example of the structure of a Braille tile according to the present invention.

FIG. 6 is a diagram showing an example of forming an LC resonant circuit of the present invention.

FIG. 7 is a diagram illustrating a Braille code.

FIG. 8 is a diagram showing an example of a structure of an auxiliary tile of the present invention.

FIG. 9 is a diagram showing an example in which the pictographic tiles, the braille tiles, and the auxiliary tiles of the present invention are arranged on a walking road surface.

FIG. 10 is a schematic diagram showing the overall configuration of the guiding device of the present invention.

11 is a block circuit diagram of the induction device in FIG.

FIG. 12 is a diagram showing a correspondence relationship between a resonance frequency and a numerical code.

FIG. 13 is a diagram showing a former part of a flowchart showing the operation of the guidance device.

FIG. 14 is a diagram showing a middle section of a flowchart showing the operation of the guidance device.

FIG. 15 is a diagram showing a latter part of a flowchart showing the operation of the guiding device.

FIG. 16 is a diagram showing an example in which a Braille tile and a base tile are separately formed and integrated.

FIG. 17 is a diagram showing an example of conventional dot tiles and linear tiles.

[Explanation of symbols]

10 ... Emoji tile, 20 ... Braille tile, 30 ... Auxiliary tile, 40 ... Guidance device, 50 ... Cane, 51 ... Transmitting antenna, 52 ... Receiving antenna, 60 ... Speaker (sound output unit)

Claims (9)

[Claims] 1. A visually impaired guidance system for guiding the walking of a visually impaired person, comprising a pictogram tile formed by a convex portion of a pictographic image of a simplified image that is easy to distinguish on the surface of a square tile, It comprises a braille tile formed by patterning Kiyon Braille on the surface of a square tile and convex tiles, and an auxiliary tile formed by patterning the code of Braille on the surface of a square tile by convex portions. A system for guiding visually impaired persons, characterized in that a tile and the auxiliary tile are combined and arranged on a walking road surface. 2. A linear convex portion is formed at a position corresponding to the center of the lowermost point of the braille of the braille tile and the auxiliary tile, and the linear convex portion indicates the reading direction of the braille tile. The visually impaired person guidance system according to claim 1, wherein: 3. A first LC resonance circuit, which resonates with a radio wave of a predetermined frequency corresponding to the pictogram formed on the pictogram tile and radiates a radio wave of a predetermined resonance frequency, is arranged in the pictogram tile at appropriate intervals. 2. The visually impaired person guidance system according to claim 1, wherein a plurality of them are provided. 4. Resonating with a predetermined frequency by resonating with a radio wave of a predetermined frequency corresponding to the first vowel row and the second to ninth consonant rows of the Japanese syllabary of the Japanese syllabary formed in the braille tile. And a second LC resonance circuit that radiates radio waves of the resonance frequency, and resonates with radio waves of a predetermined frequency corresponding to the vowels of the first to fifth vowels of the Japanese syllabary gojyuon, which are formed in the same braille tile. A third LC resonance circuit for radiating a radio wave having a predetermined resonance frequency, the second LC resonance circuit and the third LC resonance circuit are arranged in the braille tile, and the braille code formed on the auxiliary tile The fourth LC resonance circuit, which resonates with a radio wave of a predetermined frequency corresponding to, and radiates a radio wave of a predetermined resonance frequency, is disposed in the auxiliary tile. Disability guidance system. 5. Each of the LC resonant circuits comprises a coil formed by printing or etching on a substrate made of a dielectric or an insulator, and a capacitor connected to the coil. It embedded in each tile, The visually impaired person guidance system of Claim 3 or Claim 4 characterized by the above-mentioned. 6. The capacitor according to claim 5, wherein the capacitor is formed by disposing metal plates on the upper and lower surfaces of a substrate made of a dielectric material or by embedding a chip-shaped capacitor in the substrate. The visually impaired guidance system described. 7. The visually impaired guidance system according to claim 1, wherein the pictogram tile is formed larger than the braille tile and the auxiliary tile. 8. A transmitter that sequentially transmits a plurality of radio waves having the predetermined frequencies to each of the LC resonance circuits, and one of the LC resonance circuits has a predetermined frequency transmitted from the transmitter. It corresponds to the receiving unit that receives the resonance radio wave when it resonates with the radio wave of the above and emits the radio wave of the resonance frequency, and the pictogram stored in advance based on the resonance radio wave radiated from the first LC resonance circuit received by the reception unit. The second LC converted into an audio signal and received by the receiving unit
The fourth LC received by the receiving unit after being converted into an audio signal corresponding to the fifty syllabary sounds of pre-stored sound based on the resonance radio waves radiated from the resonance circuit and the third LC resonance circuit.
An audio conversion unit for converting into an audio signal containing Braille code stored in advance based on the resonance radio wave radiated from a resonance circuit and the resonance radio wave radiated from the second LC resonance circuit and the third LC resonance circuit; 4. A guidance device provided with a voice output unit for uttering the voice signal converted by the conversion unit as a voice, so that the voice can be guided.
9. The visually impaired person guidance system according to claim 7. 9. The induction device includes a transmitting antenna that transmits a radio wave of a predetermined frequency from the transmitting unit, and a receiving antenna that receives an output resonance signal transmitted from each of the LC resonance circuits. And a guide unit including the transmitting unit, the receiving unit, the voice converting unit, and the voice outputting unit, and a transmitting antenna of the cane unit and a transmitting unit of the guiding unit body. 9. The visually impaired guidance system according to claim 8, wherein the reception antenna of the cane portion and the reception portion of the guidance device body are connected together.