JP2000084018A - Walking stick for the visually handicapped - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a walking stick for the visually handicapped which has the function of detecting yellow signs for the visually handicapped and informing them of the existence of such signs, and which detects the existence of yellow signs for the visually handicapped securely even at night and is durable enough to be used continuously for a long time. SOLUTION: A color sensor 2 to detect yellow of a sign for the visually handicapped is attached to, the lower end of a walking stick 1, namely, the object end 1a of the stick 1 which gives the safety of the way ahead to the sense of hand touch of the visually handicapped. The walking stick 1 has also a yellow sensing circuit which judges whether the color of a sign is yellow or not based on RGB signals detected by the color sensor 2 and a sign confirming device 6 which works based on the yellow detecting signals of the yellow sensing circuit to inform the visually handicapped of the existence of a yellow sign.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the field of canes used by the visually impaired, and in addition to the conventional function of this kind of cane for detecting the presence or absence of obstacles in the way, it is also widely used in the market for visually impaired persons. The present invention relates to a wand device for the visually impaired, which has a function of detecting the presence of a frequently used yellow braille block or a yellow danger display line and transmitting this to a visually impaired person.

[0002]

2. Description of the Related Art A yellow braille block (a warning block 91 or a guide block 92 as shown in FIG. 9 laid on a street or on a platform of a station) as a sign for the visually impaired on a sidewalk in the city or on the premises of a station. Etc.) are frequently used. The reason why yellow is used for such a sign is that yellow is considered to be the most recognizable color for low vision users.
On the other hand, the color of a certain object is
Read and detect as primary color information signal (RGB signal),
These red, green, and blue signals (R signal, G signal, and B signal) are logarithmically amplified and subtracted from each other to obtain a ratio of B / G and R
Technical means for calculating the ratio of / G and detecting that the values of B / G and R / G are in specific areas to determine that the color of the object is yellow is known. I have. However, the conventional walking stick for the visually impaired has only a function of sensing obstacles in the walking direction of the visually impaired. The cane for the visually impaired with the function to check the sign has not been put into practical use, and a cane with a sign confirmation device for the visually impaired that can reliably confirm the sign even at night and withstand continuous use for a long time is found Absent.

[0003]

SUMMARY OF THE INVENTION The present invention, in addition to the conventional function of sensing obstacles in the direction of walking of a visually impaired person, detects the presence of a yellow sign for the visually impaired, which is frequently used in the city. Practical use of a wand device for the visually impaired with the function of detecting and transmitting this to the visually impaired, and also reliably detect the presence of the yellow sign for the visually impaired even at night, and withstand long-term continuous use It is intended to commercialize a cane device with a sign confirmation device for the visually impaired.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method for visually impaired persons at the object end of a stick of a walking stick which transmits the safety of a hand to the tactile sense of the hand of visually impaired persons. A color sensor for detecting the color of the sign, and a yellow discrimination circuit for discriminating whether or not the color of the sign is yellow based on the RGB signals detected by the color sensor; and a yellow detection signal of the yellow discrimination circuit. And a sign confirmation device (vibrator, buzzer or other sounding device, earphone, or the like) that operates based on the information and informs the visually impaired of the presence of the sign. Light sources (incandescent lamps, light-emitting diodes, etc.) for illuminating the sign are added as necessary so that the presence of the sign can be sufficiently detected even in cloudy weather or at night, and power consumption is reduced to withstand long-term continuous use. As a light source, a white light emitting diode that intermittently irradiates a sign is used as a light source, and the white light emitting diode is intermittently turned on for a short period of time with a cycle consisting of its lighting time and a sufficiently long light-off time, and a yellow discrimination circuit. A control circuit for storing and holding the yellow detection signal output from the color sensor over this period of time, and furthermore, in order to supplement the sensitivity of the color sensor, a lens is provided at the front stage of the light reception of the color sensor. .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One of the main embodiments of the wand device for the visually impaired according to the present invention is that a visually impaired rod is provided at the object end of a rod which transmits the safety of the hand to the tactile sense of the hand of the visually impaired. A color sensor for detecting the color of the sign for the user, a yellow discrimination circuit for discriminating whether the color of the sign is yellow based on the RGB signals detected by the color sensor, and a yellow detection signal of the yellow discrimination circuit And a sign confirmation device such as a vibrator, a buzzer or other sound-producing devices, or an earphone that operates based on the information and informs the visually impaired of the presence of the sign.

Another major embodiment of the wand device for the visually impaired according to the present invention is to provide a sign for a visually impaired person on the object end of a bar which transmits the safety of the hand to the tactile sense of the hand of the visually impaired person. A color sensor for detecting the color and a light source such as an incandescent lamp or a light emitting diode for irradiating the marker when necessary, and yellow for determining whether the color of the marker is yellow based on the RGB signals detected by the color sensor The apparatus includes a discriminating circuit and a sign confirmation device that operates based on the yellow detection signal of the yellow discriminating circuit and notifies the visually impaired person of the presence of the sign.

Another major embodiment of the wand device for the visually impaired according to the present invention is that the color of the sign for the visually impaired is provided on the object end of the bar which transmits the safety of the hand to the tactile sense of the hand of the visually impaired. A color sensor for detecting the color, and a white light emitting diode for intermittently irradiating the marker when necessary, and a yellow discrimination circuit for discriminating whether or not the color of the marker is yellow based on the RGB signals detected by the color sensor, The system is provided with a sign confirmation device that operates based on the yellow detection signal of the yellow discrimination circuit and notifies the visually impaired person of the presence of the sign.

Another main embodiment of the wand device for the visually impaired according to the present invention is that the color of the sign for the visually impaired is provided on the object end of the bar which transmits the safety of the hand to the tactile sense of the hand of the visually impaired. A color sensor for detecting the color, and a white light emitting diode for intermittently irradiating the marker when necessary, and a yellow discrimination circuit for discriminating whether or not the color of the marker is yellow based on the RGB signals detected by the color sensor, It is equipped with a sign confirmation device that operates based on the yellow detection signal of this yellow discrimination circuit and notifies the presence of a sign to the visually impaired, and further intermittently intermittently operates the white light emitting diode with a cycle consisting of a lighting time and a sufficiently long light-off time. A control circuit is provided for turning on the light for a short time and storing and holding the yellow detection signal output from the yellow discrimination circuit over the period.

Another main embodiment of the wand device for the visually impaired according to the present invention is that the color of a sign for a visually impaired person is provided on the object end of a bar which transmits the safety of the hand to the tactile sense of the hand of the visually impaired person. A color sensor for detecting the color, and a lens disposed in the front stage of the color sensor for receiving light, and a yellow discrimination circuit for discriminating whether or not the color of the sign is yellow based on the RGB signals detected by the color sensor And a sign confirmation device which operates based on the yellow detection signal of the yellow discrimination circuit and notifies the visually impaired person of the presence of the sign.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a rod serving as a cane, and a visually impaired person walks while grasping the upper part thereof and checking the safety at the lower end part, that is, the object end part 1a, for any obstacle at the destination. A color sensor 2 and a light source 3 are mounted on the object end 1a of the bar 1, and a lens 4 is disposed at a stage before light reception of the color sensor 2. The color sensor 2 displays a yellow sign for the visually impaired at the destination while the visually impaired is walking,
For example, in order to detect the presence of the above-mentioned yellow braille block arranged on the road or in the station yard, the three primary color information signals (RGB signals) of red, green, and blue corresponding to the color are received by receiving reflected light from an object to which the user goes. ) Is output. The light source 3 is used to illuminate an object on the road as needed so that the color sensor 2 can sufficiently detect the color of the object on the road even in the evening, at night, or in cloudy weather when the brightness is insufficient. It is possible to use a combination of three light emitting diodes that respectively emit the three primary colors of red, green and blue light, but a white light emitting diode is particularly excellent. The lens 4 is added to enhance the effect of discriminating a yellow sign. Generally, when the distance from the color sensor 2 to the target object increases, it becomes impossible to determine whether the color of the object is yellow, but the lens 4 is added. Accordingly, the distance to the target object that can be identified as yellow can be extended.

The bar 1 is provided with a circuit unit 5 and a sign confirmation device 6. The circuit unit 5 includes a color detection circuit including the color sensor 2, a yellow determination circuit that determines whether the color of the sign is yellow based on a signal from the color detection circuit, and a blinking of the light emitting diode and a signal associated therewith. It is composed of a control circuit for processing. Sign confirmation device 6
Is operated based on the yellow detection signal by the yellow detection circuit of the circuit unit 5 to inform the visually impaired person of the presence of the sign. As the sign confirmation device 6, a sound generator such as a vibrator or a buzzer, an earphone or the like may be arbitrarily selected. In the case of a vibrator, the vibrator is attached to the hand side of the bar 1 so that the vibration can be sensed by a finger. . The hand side of the bar 1 is generally the upper end of the bar 1,
It may be set at any position on the bar 1 according to the user's convenience. The earphone 6a may be connected to the circuit on the bar 1, but as another means, a transmitter for transmitting a weak radio wave based on the yellow detection signal is provided on the bar 1, and the weak radio wave is received. The activating earphone may be separated from the bar 1 and mounted on the body. In addition, due to the miniaturization of electronic components, the rod 1 is made into a hollow rod, and the circuit unit 5 is provided in the hollow part.
It is also conceivable that part or all of the

FIG. 2 is an electric circuit diagram of the wand device for the visually impaired in the above embodiment. The circuit unit 5 includes a color detection circuit 5
a, operational amplifier circuit 5b, yellow discriminating circuit 5c, control circuit 5
d, etc., 3a is a white light emitting diode, 6 is a sign confirmation device such as a vibrator, buzzer, earphone, etc., 8
Is a power battery, and 8a is a power switch.

The color detection circuit 5a includes a color sensor 2 and a color sensor signal processing IC 7 as main parts.
Detects the color of a sign such as a yellow braille block as an RGB signal (three primary color signals of light), and outputs an R signal, a G signal,
Output as B signal. Color sensor signal processing IC7
Has a logarithmic amplification function, and converts the R signal, G signal, and B signal received from the color sensor 2 into log R, log
The signals are converted into G and log B signals. Operational amplifier circuit 5b
Has a logarithmic differential amplification function, and the log G, log
Based on each signal of G and log B, log R-log
G = log R / G, log B-log G = lo
By calculating gB / G, values of R / G and B / G are obtained.

In the present invention, it is basically important to determine whether or not the color of the sign is yellow, but the values of R / G and B / G are required for the determination. It is known that the color perception changes when the values of R / G and B / G change. According to the experimental results of the present invention, when the value of R / G is 1.4 to 1.7, the value of B / G is changed. G value is 2.1
When it is within the range of ~ 2.7, the circuit is configured such that yellow is recognized. That is, in light of the experimental results, R
When the values of / G and B / G are in the area Y of FIG. 3, it is determined that the color of the marker is yellow.

The yellow discriminating circuit 5c includes comparators 9a, 9b, 9c, 9d for comparing the R / G signal and the B / G signal received from the operational amplifier circuit 5b with a predetermined reference value. , 9b, 9c, 9d, it is determined whether the R / G value and the B / G value are within the above-mentioned ranges, respectively. The sign detected by the color sensor 2 is determined to be a yellow sign for the visually impaired, and a yellow detection signal for operating the sign confirmation device 6 is output to point A. In addition, since natural light (sunlight) and artificial light source 3 such as white light emitting diode 3a have different spectral distributions, the light applied to the sign causes a difference in the detected hue obtained by color sensor 2. Therefore, when the artificial light source 3 irradiates the marker, the comparator 9 is compared with the case where the light source 3 is not used.
In some cases, it may be necessary to correct the thresholds of a, 9b, 9c, and 9d. This correction can be performed by the adjustment circuit 10, but the light source 3 (white light emitting diode 3
When irradiating a), it is easy to automatically switch the adjustment circuit 10 to perform threshold correction.

This type of wand device for the visually impaired is required to be able to withstand long-term continuous use while suppressing power battery consumption. The wand device for the visually impaired according to the present invention has a feature that the energy required for irradiating the light source 3 is much larger than the energy required for detecting and discriminating the yellow sign, and that the response speed of the color detection circuit 5a is extremely fast. Therefore, in order to meet the above demand, the white light emitting diode 3
The lighting time of a is shortened to intermittently illuminate and emit light intermittently in a long cycle, and color detection determination is performed during this short lighting time, and a yellow detection signal resulting from the detection is temporarily stored to extend continuously. This allows the sign confirmation device to operate without hindrance while suppressing power battery consumption.

The control circuit 5d performs intermittent lighting control of the white light emitting diode 3a and control for extending the yellow detection signal for the above purpose. FIGS. 4, 5, and 6 show the voltage characteristics at points B, Ci, and Co of the control circuit 5d, respectively. From the characteristic graphs of these figures, the intermittent lighting control state of the white light emitting diode 3a and the yellow detection are shown. It is possible to know the control state of the continuous extension of the signal. That is, as can be seen from FIG. 4, the white light emitting diode 3a is intermittently turned on for about 0.01 second at a cycle of about 0.1 second. Further, when the white light emitting diode 3a is intermittently irradiating the yellow sign, the yellow detection signal output from the yellow discrimination circuit 5c has the intermittent characteristic shown in FIG. 5 at the point Ci, which is controlled by the light emission control circuit 5d. At the Co point, the characteristics are continuous as shown in FIG. 6, and the sign confirmation device 6 can be operated stably by the continuous yellow detection signal.

In order to reduce the consumption of the power supply battery, the light source 3 (white light emitting diode 3a) can be turned on by sensing this only when the surrounding area becomes dark and the amount of light received by the color sensor 2 becomes insufficient. To provide a light source switch 11,
The power switch 8a is provided with a function of automatically shutting off the power supply when the stick 1 of the cane is placed in the vertical or horizontal state and the sign detection is unnecessary.

FIGS. 7 and 8 show the effect of an experiment in which the lens 4 is arranged at the front stage of the color sensor 2 before receiving light. As is clear from FIGS. 7 and 8, even if the sign is yellow,
As the distance between the sign and the color sensor 2 increases, the yellow detection ability of the color sensor 2 decreases. However, by arranging the lens 4 at the front stage of the light receiving of the color sensor 2, there is a limitation in determining the yellow color. The distance between the sign and the color sensor can be greatly increased.

[0020]

As is apparent from the above embodiment, according to the wand device for the visually impaired of the present invention, it is possible to detect the presence or absence of an obstacle in front of the hand to be walked by the wand and to detect the safety, and at the same time the visually impaired Can detect the presence of the yellow sign for the vehicle and follow the sign, and can detect the presence of the sign even at night or in a dark place. By adding a lens to the light receiving portion of the color sensor, the limit distance to a sign that can be identified as a yellow sign can be extended.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a wand device for the visually impaired showing an embodiment of the present invention.

FIG. 2 is an electric circuit diagram of the wand device for the visually impaired.

FIG. 3 is a setting diagram of a yellow determination signal range of the wand device for the visually impaired person.

FIG. 4 is a light source lighting characteristic diagram of the wand device for the visually impaired.

FIG. 5 is a characteristic diagram of a yellow detection signal at point Ci in the electric circuit.

FIG. 6 is a characteristic diagram of a yellow detection signal at point Co in the electric circuit.

FIG. 7 is a B / G characteristic diagram showing the effect of using a lens in the wand device for the visually impaired.

FIG. 8 is an R / G characteristic diagram showing an effect of using a lens in the wand device for the visually impaired.

FIG. 9 is a plan view of a braille block for the visually impaired.

[Explanation of symbols]

 1: stick of stick 1a: objective end 2: color sensor 3: light source 3a: white light emitting diode 4: lens 5: circuit unit 5a: color detection circuit 5b: operational amplifier circuit 5c: yellow discrimination circuit 5d: light emission control circuit 6: Sign confirmation device 6a: Earphone 7: Color sensor signal processing IC 8: Power battery 8a: Power switch 9a, 9b, 9c, 9d: Comparator 10: Adjustment circuit (threshold correction means) 11: Light source switch

[Procedure amendment]

[Submission date] August 23, 1999 (1999.8.2
3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

1. A color sensor for detecting the color of a sign for a visually impaired person is attached to an object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person, and RGB detected by the color sensor. LogR / G value calculated based on the signal
Is in the range of 1.4 to 1.7 and the value of logB / G is 2.1 to
A yellow discriminating circuit for discriminating the color of the sign as yellow when it is within a range of 2.7, and a sign confirming device which operates based on the yellow detection signal of the yellow discriminating circuit and notifies the visually impaired person of the presence of the sign. A cane device for the visually impaired.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

2. A color sensor for detecting the color of a sign for a visually impaired person is attached to an object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person, and RGB detected by the color sensor. LogR / G value calculated based on the signal
Is in the range of 1.4 to 1.7 and the value of logB / G is 2.1 to
A yellow discriminating circuit for discriminating the color of the sign as yellow when it is within a range of 2.7; and a vibrator that operates based on a yellow detection signal of the yellow discriminating circuit and notifies the visually impaired person of the presence of the sign. A wand device for the visually impaired, provided on a material.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

3. A color sensor for detecting the color of a sign for a visually impaired person is attached to an object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person, and the RGB detected by the color sensor. LogR / G value calculated based on the signal
Is in the range of 1.4 to 1.7 and the value of logB / G is 2.1 to
A yellow sound discriminating circuit for judging the color of the sign as yellow when the color is in the range of 2.7; and a sounding device which operates based on a yellow detection signal of the yellow discriminating circuit and informs a visually impaired person of the presence of the sign. A wand device for the visually impaired, provided on a bar.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] Claim 4

[Correction method] Change

[Correction contents]

4. A color sensor for detecting the color of a sign for a visually impaired person is attached to an object end of a rod for transmitting the safety of a going person to the tactile sense of the hand of a visually impaired person, and RGB detected by the color sensor. LogR / G value calculated based on the signal
Is in the range of 1.4 to 1.7 and the value of logB / G is 2.1 to
A yellow discriminating circuit for discriminating the color of the sign as yellow when it is within a range of 2.7, and an earphone that operates based on a yellow detection signal of the yellow discriminating circuit and notifies the visually impaired person of the presence of the sign, A wand device for the visually impaired, which is connected to a circuit on the material.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] Claim 5

[Correction method] Change

[Correction contents]

5. A color sensor for detecting the color of a sign for a visually impaired person is attached to an object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person, and RGB detected by the color sensor. LogR / G value calculated based on the signal
Is in the range of 1.4 to 1.7 and the value of logB / G is 2.1 to
A yellow discriminating circuit for discriminating the color of the sign as yellow when the color is in the range of 2.7; a transmitter for transmitting a weak radio wave based on a yellow detection signal of the yellow discriminating circuit; A wand device for the visually impaired, comprising: an earphone that operates to communicate the presence of the sign to the visually impaired.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] Claim 6

[Correction method] Change

[Correction contents]

6. A color sensor for detecting the color of a sign for a visually impaired person and a light source for irradiating the sign when necessary are provided at the object end of a bar for transmitting the safety of the going hand to the tactile sense of the hand of a visually impaired person. It is attached, and the value of logR / G calculated based on the RGB signal detected by this color sensor is 1.4 to 1.7.
The value of logB / G is in the range of 2.1 to 2.7 in the range of
A yellow discriminating circuit that discriminates the color of the sign as yellow when the sign is present, and a sign confirming device that operates based on the yellow detection signal of the yellow discriminating circuit and notifies the visually impaired person of the presence of the sign. Wand device for the visually impaired.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] Claim 7

[Correction method] Change

[Correction contents]

7. A color sensor for detecting the color of a sign for a visually impaired person and a light source for irradiating the sign when necessary are provided at the object end of a bar for transmitting the safety of the hand to the tactile sense of the hand of the visually impaired person. It is attached, and the value of logR / G calculated based on the RGB signal detected by this color sensor is 1.4 to 1.7.
The value of logB / G is in the range of 2.1 to 2.7 in the range of
A yellow discriminating circuit for discriminating the color of the sign as yellow when the sign is provided, and a vibrator that operates based on the yellow detection signal of the yellow discriminating circuit and notifies the presence of the sign to a visually impaired person is provided at the hand side of the bar. A cane device for the visually impaired.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] Claim 8

[Correction method] Change

[Correction contents]

8. A color sensor for detecting the color of a sign for a visually impaired person and a light source for irradiating the sign when necessary are provided at the object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person. It is attached, and the value of logR / G calculated based on the RGB signal detected by this color sensor is 1.4 to 1.7.
The value of logB / G is in the range of 2.1 to 2.7 in the range of
A yellow discriminating circuit for discriminating the color of the sign as yellow when the sign is used, and a sounding device that operates based on the yellow detection signal of the yellow discriminating circuit and notifies the visually impaired person of the presence of the sign is provided on the bar. A cane device for the visually impaired.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] Claim 9

[Correction method] Change

[Correction contents]

9. A color sensor for detecting the color of a sign for a visually impaired person and a light source for irradiating the sign when necessary are provided at the object end of a bar for transmitting the safety of the going to the tactile sense of the hand of a visually impaired person. It is attached, and the value of logR / G calculated based on the RGB signal detected by this color sensor is 1.4 to 1.7.
The value of logB / G is in the range of 2.1 to 2.7 in the range of
A yellow discriminating circuit for discriminating the color of the sign as yellow when the sign is used, and an earphone that operates based on the yellow detection signal of the yellow discriminating circuit and notifies the visually impaired person of the presence of the sign is connected to the circuit on the bar. A cane device for the visually impaired.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] Claim 10

[Correction method] Change

[Correction contents]

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One of the main embodiments of the wand device for the visually impaired according to the present invention is that a visually impaired rod is provided at the object end of a rod which transmits the safety of the hand to the tactile sense of the hand of the visually impaired. A color sensor that detects the color of the sign for the user is attached, and the logR calculated based on the RGB signals detected by this color sensor
When the value of / B is in the range of 1.4 to 1.7, the value of logB / G is
When the color is in the range of 2.1 to 2.7, the color of the sign is yellow.
And a sign confirmation device such as a vibrator, a buzzer or other sounding device, and an earphone that operates based on a yellow detection signal of the yellow judgment circuit to notify the presence of a sign to a visually impaired person. .

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

The color detection circuit 5a includes a color sensor 2 and a color sensor signal processing IC 7 as main parts.
Detects the color of a sign such as a yellow braille block as an RGB signal (three primary color signals of light), and outputs an R signal, a G signal,
Output as B signal. Color sensor signal processing IC7
Has a logarithmic amplification function, and converts the R signal, G signal, and B signal received from the color sensor 2 into logR, logG,
is converted into a signal of logB. The operational amplifier circuit 5b is differential
It has an amplifying function, and based on each of the above-mentioned logR, logG, and logB signals, logR-logG = logR / G, l
Calculate ogB-logG = logB / G, and logR
/ G value (in this specification and drawings, “R / G value”
Abbreviated) and the value of logB / G (in this specification and drawings)
Is abbreviated as “value of B / G”) .

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

In order to reduce the consumption of the power supply battery, the light source 3 (white light emitting diode 3a) can be turned on by sensing this only when the surrounding area becomes dark and the amount of light received by the color sensor 2 becomes insufficient. To provide a light source switch 11,
Wand bar 1 is added to the power switch 8a functions to cut off the power automatically when it is placed in a vertical or horizontal state indicator detection unwanted state.

Claims (23)

[Claims] 1. A color sensor for detecting the color of a sign for a visually impaired person is attached to an object end of a bar for transmitting the safety of a hand to a tactile sense of a hand of a visually impaired person, and RGB detected by the color sensor. A yellow discriminating circuit for discriminating whether or not the color of the sign is yellow based on the signal, and a sign confirming device that operates based on the yellow detection signal of the yellow discriminating circuit and notifies the visually impaired person of the presence of the sign. A cane device for the visually impaired. 2. A color sensor for detecting the color of a sign for a visually impaired person is attached to an object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person, and RGB detected by the color sensor. A yellow discriminating circuit for discriminating whether or not the color of the sign is yellow based on a signal is provided.The vibrator that operates based on the yellow detection signal of the yellow discriminating circuit and transmits the presence of the sign to a visually impaired person is provided on the bar. A wand device for the visually impaired, comprising: 3. A color sensor for detecting the color of a sign for a visually impaired person is attached to an object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person, and RGB detected by the color sensor. The bar is provided with a yellow discriminating circuit for discriminating whether or not the color of the sign is yellow based on a signal, and operating based on a yellow detection signal of the yellow discriminating circuit to inform a visually impaired person of the presence of the sign. A wand device for the visually impaired, characterized in that it is provided in a wand. 4. A color sensor for detecting the color of a sign for a visually impaired person is mounted on an object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person, and RGB detected by the color sensor. A yellow discriminating circuit for discriminating whether or not the color of the sign is yellow based on the signal, and an earphone that operates based on the yellow detection signal of the yellow discriminating circuit and notifies the visually impaired person of the presence of the sign on the bar. A cane device for the visually impaired, which is connected to the circuit of (1). 5. A color sensor for detecting the color of a sign for a visually impaired person is attached to the object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person, and RGB detected by the color sensor. A yellow discriminating circuit for discriminating whether or not the color of the sign is yellow based on a signal, a transmitter for transmitting a weak radio wave based on a yellow detection signal of the yellow discriminating circuit, and receiving and operating the weak radio wave A wand device for the visually impaired, comprising an earphone for communicating the presence of the sign to the visually impaired. 6. A color sensor for detecting the color of a sign for a visually impaired person and a light source for irradiating the sign when necessary are provided at the object end of a bar for transmitting the safety of the hand to the tactile sense of the hand of a visually impaired person. A yellow discriminating circuit which is mounted and judges whether or not the color of the sign is yellow based on the RGB signals detected by the color sensor, and which operates based on the yellow detection signal of the yellow discriminating circuit to operate the sign for the visually impaired A cane device for the visually impaired, comprising a sign confirming device for notifying presence. 7. A color sensor for detecting the color of a sign for a visually impaired person, and a light source for irradiating the sign when necessary, are provided at the object end of a bar for transmitting the safety of the hand to the tactile sense of the hand of a visually impaired person. It is equipped with a yellow discriminating circuit for judging whether or not the color of the sign is yellow based on the RGB signal detected by the color sensor, and operates based on the yellow detection signal of the yellow discriminating circuit to mark the visually impaired person. A wobble device for the visually impaired, wherein a vibrator for notifying the presence of a wedge is provided at the hand of the bar. 8. A color sensor for detecting the color of a sign for a visually impaired person and a light source for irradiating the sign when necessary are provided at the object end of a bar for transmitting the safety of the going to the tactile sense of the hand of the visually impaired person. It is equipped with a yellow discriminating circuit for judging whether or not the color of the sign is yellow based on the RGB signal detected by the color sensor, and operates based on the yellow detection signal of the yellow discriminating circuit to mark the visually impaired person. A wand device for the visually impaired, wherein a sounding device for notifying the presence of a hand is provided on the bar. 9. A color sensor for detecting the color of a sign for a visually impaired person, and a light source for irradiating the sign when necessary, are provided at the object end of a bar for transmitting the safety of the going hand to the tactile sense of the hand of a visually impaired person. It is equipped with a yellow discriminating circuit for judging whether or not the color of the sign is yellow based on the RGB signal detected by the color sensor, and operates based on the yellow detection signal of the yellow discriminating circuit to mark the visually impaired person. A wand device for the visually impaired, wherein an earphone for communicating the presence of the wand is connected to a circuit on the bar. 10. A color sensor for detecting the color of a sign for a visually impaired person, and a light source for irradiating the sign when necessary, are provided at the object end of a bar for transmitting the safety of the hand to the tactile sense of the hand of a visually impaired person. A transmitter which is mounted and has a yellow discriminating circuit for discriminating whether or not the color of the sign is yellow based on the RGB signals detected by the color sensor, and which emits a weak radio wave based on the yellow detection signal of the yellow discriminating circuit. A wand device for the visually impaired, which is provided with an earphone that receives the weak radio wave and operates to inform the visually impaired of the presence of the sign. 11. The wand device for visually impaired persons according to claim 6, wherein an incandescent lamp is used as a light source. 12. The wand device for a visually impaired person according to claim 6, wherein a light emitting diode is used as a light source. 13. A color sensor for detecting the color of a sign for a visually impaired person, and a white color for intermittently irradiating the sign, if necessary, at an object end of a rod for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person. A yellow discriminating circuit which is mounted with a light emitting diode and discriminates whether or not the color of the sign is yellow based on the RGB signals detected by the color sensor; And a sign confirmation device for notifying the presence of the sign to the visually impaired person. 14. A color sensor for detecting the color of a sign for a visually impaired person, and a white color for intermittently irradiating the sign when necessary at the object end of a bar for transmitting the safety of the going to the tactile sense of the hand of a visually impaired person. A light-emitting diode is mounted, and a yellow discriminating circuit is provided for discriminating whether or not the color of the sign is yellow based on the RGB signals detected by the color sensor. A wand device for the visually impaired, wherein a vibrator for notifying a person of the presence of a sign is provided on the hand side of the bar. 15. A color sensor for detecting the color of a sign for a visually impaired person, and a white light for intermittently irradiating the sign when necessary at an object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person. A light-emitting diode is mounted, and a yellow discriminating circuit is provided for discriminating whether or not the color of the sign is yellow based on the RGB signals detected by the color sensor. A stick device for a visually impaired person, wherein a sound device for notifying a person of the presence of a sign is provided on the bar. 16. A color sensor for detecting the color of a sign for a visually impaired person, and a white color for intermittently irradiating the sign when necessary, at the object end of a rod for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person. A light-emitting diode is mounted, and a yellow discriminating circuit is provided for discriminating whether or not the color of the sign is yellow based on the RGB signals detected by the color sensor. A wand device for the visually impaired, wherein an earphone for communicating the presence of a sign to a person is connected to a circuit on the bar. 17. A color sensor for detecting the color of a sign for a visually impaired person, and a white light for intermittently irradiating the sign when necessary, at an object end of a bar for transmitting the safety of a hand to the tactile sense of the hand of a visually impaired person. A light emitting diode is mounted, and a yellow discriminating circuit is provided for discriminating whether or not the color of the sign is yellow based on the RGB signals detected by the color sensor. A weak radio wave is transmitted based on the yellow detection signal of the yellow discriminating circuit. A wand device for the visually impaired, comprising: a transmitter that transmits the signal and an earphone that receives the weak radio wave to operate and inform the visually impaired of the presence of the sign. 18. A control for intermittently turning on a light emitting diode for a short period of time with a cycle consisting of a lighting time and a sufficiently long light-off time, and storing and holding a yellow detection signal output from a yellow discrimination circuit beyond the cycle time. The wand device for the visually impaired according to claim 12, wherein a circuit is provided. 19. A white light-emitting diode is intermittently turned on for a short time intermittently with a cycle consisting of a lighting time and a light-off time longer than this, and a yellow detection signal output from a yellow discrimination circuit is stored and held over the cycle time. The wand device for the visually impaired according to any one of claims 13 to 17, further comprising a control circuit. 20. A switch circuit for detecting that the amount of light received by the color sensor is in an insufficient state, and illuminating a light source such as an incandescent lamp, a light emitting diode or a white light emitting diode is provided. 20. The wand device for a visually impaired person according to any one of 19. 21. A yellow discriminating circuit includes a comparator for comparing an R / G signal and a B / G signal obtained by processing RGB signals detected by a color sensor with a reference set value, wherein the sign when the sign is illuminated with natural light is provided. 7. A threshold correction means for correcting the reference set value when the sign is illuminated by a light source such as an incandescent lamp, a light emitting diode, or a white light emitting diode as compared with a reference set value, wherein a threshold correction means is provided. 20. The wand device for a visually impaired person according to any one of 19. 22. The wand device for visually impaired persons according to claim 6, further comprising a power switch for shutting off power when the bar is in a vertical state or a horizontal state. . 23. The wand device for a visually handicapped person according to claim 1, wherein a lens is provided at a stage before light reception of the color sensor.