JPH07250863A - Wireless guide device - Google Patents

Abstract

PURPOSE:To generate accurate guide data by emitting predetermined guide data when a received specific code coincides with a memory code. CONSTITUTION:A receiver main body equipped with an antenna 24 is arranged at the place requiring guidance to a public office or a post office and receives the signal modulated with a specific code transmitted from the portable card type transmitter of a visually handicapped person. This specific code continues to a header signal, a system ID code, an inherent ID code and a function code to be received and detected by the RF receiving part 25 of the receiver main body and is applied to a control part 21. When the demodulated system ID code coincides with the ID code stored in memory parts 21a, 23, the function code is decoded and a sound of guide data is synthesized to be emitted from a speaker 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to be installed in public facilities and other places. A transmitter carried by a visually impaired person, etc., and a voice, a chime, etc. according to a transmission signal from the transmitter. And a receiver for transmitting guidance information according to the above.

[0002]

2. Description of the Related Art As a conventional example of a wireless guide device for visually impaired persons, there is one disclosed in, for example, Japanese Utility Model Publication No. 1-86340. When the switch of the wireless transmitter carried by a visually handicapped person is pressed by this guide device, the receiver installed in a public facility receives it and it is determined that the received signal includes a unique code. In addition, guidance voices and messages can be issued.

[0003]

The conventional radio guidance device of this type has the following problems. (1) Since guidance information is not output from the receiver side unless the switch of the transmitter is operated, it may not be possible to determine at which position the switch should be operated, which is not practical.

(2) In order to solve the above problem, it is conceivable to continuously transmit a signal from the transmitter to the receiver side. However, with a structure in which a signal is constantly transmitted from the transmitter, the transmitter continues unnecessary transmission, which accelerates the consumption of the battery mounted in the transmitter and is uneconomical. Also, if the user takes a break or leaves the transmitter with the switch turned on, the battery will be consumed while not in use.

(3) In the conventional wireless guide device, when the guide switch for the transmitter is pressed again near the entrance after hearing the guide guide for the entrance at the entrance of the building, the guide guide for the same entrance flows. Therefore, unnecessary guidance may be duplicated and the transmitter carrier may be confused.

(4) Since only uniform guide information flows from the receiver side when the switch of the transmitter is operated, for example, specific detailed information is given only to a person who wants to know more detailed information. Lack of attention.

(5) When a visually handicapped person carries a transmitter, it is inconvenient to know whether or not the power switch is turned on only by groping. In addition, it is difficult to know the voltage drop of the internal battery of the transmitter.

The present invention is to solve the above-mentioned problems of the conventional radio guidance device, and provides a radio guidance device which is capable of issuing appropriate guidance information, which is rich in consideration for visually impaired persons who carry a transmitter. It is intended to be provided.

Another object of the present invention is to reduce the consumption of the battery mounted on the transmitter as much as possible.

[0010]

A radio guiding device according to the present invention has a portable transmitter for intermittently transmitting a signal modulated with a specific code, and a specific received signal having a function of receiving the transmission signal. An installed receiver that emits predetermined guidance information when the code matches a prestored code.

Alternatively, a portable transmitter for intermittently transmitting a signal modulated with a specific code, and a specific code received having a function of receiving the transmission signal are the same as those stored in advance. A receiver that emits predetermined guidance information when the transmitter is present, the transmitter is provided with a transmitter that transmits a signal intermittently, and the transmitter is provided with a device that receives the signal. Is characterized in that a signal modulated with a specific code is emitted when the signal from the installed receiver is received.

In the above two means, it is preferable that the transmitter is provided with a sensor for detecting vibration, and the intermittent transmission from the transmitter is stopped when the sensor does not detect vibration for a predetermined time or longer. .

In each of the above three means,
It is assumed that the specific code of the signal transmitted intermittently includes an ID code and a function code so that a function code having a content different from the normal function code is issued only when a specific operation is performed by the transmitter. In the receiver, the guide information can be selected according to the content of the function code.

It is possible that the above-mentioned function code different from the usual one is issued every time the power switch provided in the transmitter is operated.

Further, in the wireless guide device according to the present invention, in any one of the means, the specific code further includes a unique ID code that differs for each transmitter, and the receiver holds the received unique ID code. The guide information is not provided when a code including the same unique ID code is received within a certain period of time.

According to the present invention, in any one of the above means, the transmitter is provided with a sounding means for emitting a predetermined sound when the power switch is turned on.

Alternatively, the transmitter is provided with a battery check circuit and a sounding means for emitting a sound according to the check content of the battery check circuit.

Alternatively, the receiver is provided with a sensitivity adjusting section for arbitrarily setting the receiving range, or the receiver is provided with a switch, and when the switch is operated, there is no reception from the transmitter. The guidance information is issued,

Further, in addition to the transmitter, an operating device for wirelessly operating the setting of the receiver is provided.

[0020]

In the wireless guide device according to the present invention, a transmitter carried by a visually handicapped person or the like intermittently emits a signal. Therefore, when the transmitter is within the receiving range of the receiver, the receiver automatically operates. Guidance information is issued. Therefore, it is not necessary to operate the transmitter, and appropriate guide information can be obtained at all times. Further, in the present invention, for example, the transmitter is provided with a timer, and when the switch of the transmitter is turned on, the signal is continuously transmitted intermittently at a time interval controlled by the timer.

However, in the present invention, it is possible to configure so that the transmitter transmits only when it comes close to the receiver. That is, the receiver side performs intermittent transmission. The transmitter reaches the vicinity of the receiver,
Only when the transmitter receives the signal from the receiver, the transmitter emits a signal modulated with a specific code at predetermined time intervals. At the receiver, guidance information is issued when the signal from the transmitter is received. In this case, the frequency of the signal from the transmitter and the frequency of the signal from the receiver are made different.
Further, the installed receiver transmits signals intermittently at a constant cycle, but the transmitter is set to receive at a shorter time interval. As described above, the receiver and the transmitter are in the response state, and the transmitter emits a signal only at this time, so that the battery of the transmitter can be prevented from being consumed.

Further, as described above, the transmitter has a structure in which a signal is always emitted at a constant cycle when the switch is pressed, or the transmitter only when the transmitter receives a signal from the receiver. It is preferable to provide the transmitter with a sensor for detecting vibration in both the case where the signal is intermittently transmitted from the receiver to the receiver. In this structure, when the person carrying the transmitter is stopped, the sensor does not detect the vibration, so that the transmission from the transmitter is stopped. Therefore, when the person carrying the transmitter stops at the same position and is listening to the guidance information from the receiver side, or when taking a break, or when the transmitter is used up and left unattended, The battery can be stopped and the unnecessary consumption of the battery can be prevented. In this case, the transmitter may or may not be provided with a power switch.

Further, in all of the above means, a function code different from usual is transmitted only when a specific operation is performed on the transmitter, and guide information is selected on the receiver side according to the function code. Can be By this, for example, the same guide information
It is possible to listen to the information once, or to hear more detailed guidance information than usual guidance information.

The above-mentioned specific operation for issuing a function code different from the usual one can be performed by operating a power switch provided in the transmitter, or a switch dedicated to a specific operation can be provided. .
The power switch can be used for certain operations to simplify the transmitter structure. When using the above vibration sensor, it is not necessary to provide a power switch on the transmitter,
In this case, the transmitter is provided with a switch dedicated to the above operation.

In all of the above means, when the receiver issues guidance information, the transmitter holds a unique ID code, and when the same unique ID code is received within a certain period of time, guidance is provided. Do not give out information.
This can prevent, for example, that guidance information about entrance is reissued when a person carrying the same receiver tries to leave the entrance after guidance information about entrance has been issued at the entrance of the building.

Further, by providing the transmitter with a sounding means for producing a predetermined sound when the power switch is turned on, it is possible for a visually impaired person to easily recognize that the power switch of the transmitter is turned on.

Alternatively, by providing the transmitter with a battery check circuit and a sounding means, a visually impaired person can easily recognize that the voltage of the battery is low.

By providing the receiver with a sensitivity adjusting section, the receiving range of the receiver installed at a predetermined place can be arbitrarily set, and thus the transmitter can be set within a range where guidance by a specific receiver is required. The guide information will be emitted only when the user enters, so that the optimum guide can be provided.

Further, when the switch of the receiver is operated, the guide information is emitted even if the receiver does not receive the guide information, so that the guide information can be sent to a person who does not carry the transmitter. It becomes possible to emit.

Further, by providing an operating device for wirelessly operating the setting of the receiver separately from the transmitter, the receiving range of the receiver is set, the guide information is switched, and the volume of the guide information is remotely controlled. Can be set in.

[0031]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing the outer appearance of a transmitter of the present invention, FIG. 2 is a perspective view showing the outer appearance of a receiver body and a remote control device, and FIG. 3 is a circuit block diagram showing a first embodiment of the internal structure of the transmitter. ,
4 is a circuit block diagram showing a first embodiment of the internal structure of the receiver main body, FIGS. 5 and 6 and 7 are signal explanatory diagrams showing a transmission signal from the transmitter, and FIG. 8 is reception at the receiver main body. It is a flowchart which shows a processing operation.

The transmitter A shown in FIG. 1 is a card type that can be carried by a visually impaired person or the like. Receiver body B shown in FIG.
Will be installed in places such as public offices, post offices, hospitals, banks, stations, intersections, and other public facilities where guidance is required. For the receiver main body B, the setting of the receiver main body B can be switched by the remote control device C.

Inside the transmitter A, various functional parts made up of integrated circuits are housed. As shown in FIG. 3, inside the transmitter A, a control unit (CP
U) 1 is provided. Storage unit (RA in control unit 1
A predetermined function code is stored in M) 1a. A nonvolatile storage element (ROM) 2 is connected to the control unit 1, and an ID code is stored in the storage element 2.

The RF transmitter 3 generates a transmission signal AM-modulated or FM-modulated by the specific code consisting of the ID code and the function code, and the transmission signal is intermittently transmitted from the built-in transmission antenna 4. It The intermittent transmission cycle is controlled and set by the timer 12.

The transmitter A has a built-in battery 5. The battery 5 is a rechargeable battery or a non-rechargeable battery. As shown in FIG. 1, a slide type power switch 6 is provided on the side of the transmitter A. When the power switch 6 is turned on, DC power is applied from the battery 5 to the control unit 1, the RF transmission unit 3 and the battery check circuit 7. The battery check circuit 7 can measure the voltage of the battery 5, and the measurement result is given to the control unit 1. Further, the electric power from the battery 5 is supplied to the nonvolatile storage element 2, the electronic sound buzzer 8 and the timer 12.
Given to.

The electronic sound buzzer 8 is built in at a predetermined position of the transmitter A, and an electronic sound is emitted from the buzzer 8 in response to a buzzer sound command from the control unit 1 issued as necessary. In addition, the transmitter A has a push button switch 9 if necessary.
Is provided. As shown in FIG. 1, the push button switch 9 is arranged at a position on the front surface of the card-type transmitter A that is easily pushed by a finger.

As shown in FIG. 2, the receiver main body B is housed in the case 10. This case 10
Is located in a public facility such as a public office, post office or hospital.
Alternatively, it is installed at a plurality of places that require guidance, and the height from the floor is set so that it can be touched by a person. On the front surface of the case 10, there is formed a sounding hole 10a through which sound from a speaker is emitted.
A touch switch 11 for detecting static electricity is provided on the lower front surface of the case 10. This receiver main body B is premised on that it operates by receiving the transmission signal from the transmitter A. However, when the touch switch 11 is touched by a hand, even if the signal from the transmitter A is not received, A guidance operation is performed.

As shown in FIG. 4, inside the receiver B,
Control unit (CPU) 21 such as a microcomputer
The control unit 21 is provided with a storage unit (RAM) 21a that holds a unique ID code for each transmitter, which will be described later, for a certain period of time. The receiver main body B has a nonvolatile storage element (ROM) 22 and a storage unit (RAM) 2
3 is provided. An operation program is stored in the storage element 22. The storage unit 23 is for the program execution in the control unit 21.

The receiver body B has a receiving antenna 24 and an R
An F receiver 25 is provided. The RF receiver 25 includes
A reception sensitivity adjustment unit 26 such as an attenuator is provided, and the reception sensitivity adjustment unit 26 can be switched by a sensitivity adjustment switch 27. Reception sensitivity adjustment unit 2
When 6 is an attenuator, the control voltage applied to the diode is adjusted steplessly or stepwise by the sensitivity adjustment switch 27.

The receiver body B is provided with a voice synthesizer 28 and a voice data storage 29. Voice data storage unit 2
9 stores data relating to a plurality of types of guidance voices. The voice synthesis unit 28 calls predetermined data from the voice data storage unit 29 according to the control operation of the control unit 21 and performs voice synthesis of the predetermined data to generate a series of guide voices. This guidance voice is amplified by the amplification unit 31 and emitted from the speaker 32. AC 100V is used as a power source in the receiver main body B, and the AC 100V is rectified and transformed by the power supply circuit 33 to be a voltage of DC 5V, for example, and is supplied to the control unit 21, the RF receiving unit 25, and the like.

The control unit 21 includes the touch switch 11
In addition to the reset switch 34 and the channel switch 3
5 is connected. The reset switch 34 is the control unit 2
The operation of No. 1 is reset, and the channel switch 35 is for switching the combination of the guide voices synthesized by the voice synthesizer 28. Further, a volume switch 36 is connected to the amplification section 31 so that the volume of the guide voice emitted from the speaker 32 can be adjusted. The sensitivity adjustment switch 27, the reset switch 34, the channel switch 35, and the volume switch 36 are all the case 1 of the receiver main body B shown in FIG.
It is usually placed in a place where it is difficult for human hands to touch, such as the side surface, the back surface, the bottom surface, and the like.

In the embodiment of FIG. 2, in addition to the receiver main body B, the remote control device C is provided separately. The remote control device C is of a card type having a size that can be held by an administrator by hand, or the same size as the transmitter A. A code including a specific ID code and a function code for adjustment is stored in the remote controller C, and a signal AM-modulated or FM-modulated by these codes is stored in the antenna 4
Sent from 1. When the modulated radio wave from the remote control device C is received by the antenna 24 of the receiver main body B, the received contents are decoded by the control unit 21 and various setting items are switched or adjusted according to the contents of the function code.
Items set or adjusted by the remote control device C are the same as those by the various switches shown in FIG. Therefore, the remote control device C has a sensitivity adjustment switch 2
7, a switch group having the same functions as the reset switch 34, the channel switch 35, and the volume switch 36 are provided.

The remote control device C shown in FIG. 2 transmits an AM or FM modulated signal, and this transmission signal is received by the receiving antenna 24 of the receiver main body B. Various adjustment or setting signals may be transmitted from the device C by infrared light emission, and infrared light may be received by the receiver main body B to perform various settings and adjustments.

Next, the transmission and reception operations of the above-mentioned radio guidance device will be described. A signal modulated by a specific code is wirelessly transmitted as a radio wave from the transmitter A. When the power switch 6 of the transmitter A is slid to the ON side, the control unit 1,
The voltage of the battery 5 is applied to the RF transmitter 3, the battery check circuit 7, the nonvolatile memory element 2, the electronic sound buzzer 8, and the timer 12. In this embodiment, when the power switch 6 is turned on and a voltage is applied to the control unit 1, the control unit 1 issues a sounding command to the electronic sound buzzer 8, and the buzzer 8 makes a beep once, for example. Is issued. Thus, a visually handicapped person carrying the transmitter A can recognize that the power switch 6 has been reliably switched to the ON side.

When the power is turned on, the controller 1 extracts the ID code from the storage element 2, and the ID code
A specific code that is continuous with the function code stored in the storage unit 1a in the control unit 1 is generated. In the RF transmitter 3, the transmission radio wave is modulated by this specific code,
The modulated radio wave is transmitted by the antenna 4. Also,
This transmission is controlled by the time setting of the timer 12 and is performed intermittently in a predetermined cycle. As shown in FIG. 5, immediately after the power is turned on, the radio signals S1, S2, S3, ... Modulated by the specific code are transmitted at a constant time interval t (for example, every 3 seconds) set by the timer 12. ) Will be sent.

FIG. 6 shows the contents of the specific code K for modulating the radio signals of the radio signals S1, S2, S3, .... The specific code K follows the header signal K1, the system ID code K2a, the unique ID code K2b, and the function code K3. Header signal K1
Means that this is followed by the transmitted signal.
The system ID code K2a is a code common to all transmitters used in, for example, one public facility, and the system ID code K2a is different for each different facility. The unique ID code K2b corresponds to the individual transmitter A.
The code is different for each. The function code K3 is for extracting each guide information issued by the receiver main body B.

The radio wave signals S1, S2, S3 shown in FIG.
Each of the radio signals may be modulated by the set of specific codes K shown in FIG. 6, but each of the radio signals S1, S2, S3, ... Preferably, it is modulated by a specific code formed by repeating the same code. FIG. 7 shows the contents of the specific code K in that case.

The specific code K shown in FIG. 7 is the same code K.
One set of 0s repeated a plurality of times (three times in FIG. 7) is set. Each code K0, K0, K0 has the same content, and the code K0 is the header signal K1,
It includes a system ID code K2a, a unique ID code K2b, a function code K3 and a separator K4. The code K0 having the same content is continuously repeated a plurality of times (for example, three times) to form one set of specific codes K, and the one set of specific codes K causes the radio signal S to be transmitted.
1, S2, S3, ... Are respectively modulated.

When the specific code K shown in FIG. 7 is used, since a plurality of sets of codes K0 having the same content are included in one radio signal S1 or S2 or S3, respectively, the receiver main body B receives the header signal or each code. The probability that any code K0 can be received becomes high even if the read signal is missed or the received signal is missing due to noise, and the reliability is improved. Further, in this embodiment, the function code K3 that modulates the radio signal S1 that is transmitted first when the power switch 6 is turned on (one set of function codes in FIG. 6, multiple sets of function codes in FIG. 7). Is different from the content of the function code K3 (also one set of function code in FIG. 6 and a plurality of sets of function code in FIG. 7) for modulating the radio signal of S2, S3, ...

Radio signals S2, S transmitted after the second time
The function code that modulates 3, S4, ...
It is a normal function code stored in the storage unit 1a of the control unit 1. This normal function code is
Say a normal guide message on the receiver body B, for example, general guide information such as "This is a facility of ○○" or "Turn right to the next corridor to go to XX." It is for making it.

However, the function code that modulates the first radio wave signal S1 is a special code that is also stored in the storage unit 1a. When this special function code is received by the receiver body B side, a guidance operation different from that when the normal function code is received is performed. For example, when the receiver main body B receives a special function code, the guidance such as "This is a facility of XX" which is originally sent only once is repeatedly sent once again. With this, when the guidance information cannot be heard, it can be confirmed again. Or receiver body B
When the receiver receives a special function code, the receiver body B issues further detailed guidance information. For example, "The location of the toilet at this facility is the location of XX on the XX floor." Or "The service provided at this facility is XXX.
is. Detailed guide information such as “” is issued.

In this embodiment, when a radio signal from the transmitter A is received by the receiver main body B after a lapse of a certain time after the power is turned on, the receiver main body B automatically outputs normal guide information. However, if the power switch 6 is once turned off and then switched to the ON side at this time, a signal including a special function code is transmitted as described above, and the same guide information is repeatedly generated as described above. Alternatively, more detailed guidance information can be generated.
Note that the radio signal modulated by this special function code is not limited to S1 but includes a special function code in a plurality of radio signals after the power is turned on, such as S1 and S2. Alternatively, a radio signal modulated by a normal function code may be emitted.

When a special function code is included in a plurality of radio signals after power-on, for example, the meaning of the special function code may be changed between the radio signals S1 and S2 (or more). . In this case, the first special message corresponding to the radio wave signal S1 and the second special message corresponding to the radio wave signal S2 can be generated by the receiver main body B at different times. Further, two receiver bodies B are provided, one of the receiver bodies receives the radio signal S1, and the other receiver body receives the radio signal S1.
2 may be received, and special messages with different contents may be pronounced at different times from each receiver body. By doing so, it is possible to further promote the guidance to the destination by voice.

The push button switch 9 shown in FIGS. 1 and 3 can also be used as a method of generating a radio wave signal modulated by the above special function code. When the switch 9 is provided, immediately after the power switch 6 is turned on, and continuously thereafter, the transmission radio wave of the same content modulated by the specific code K including the normal function code is always intermittent. Sent. Then, only the radio wave transmitted once or several times immediately after the switch 9 is pushed is modulated by the above-mentioned special function code. That is, only when the push button switch 9 is pressed, the guidance information issued from the receiver main body B is repeated or detailed guidance information is generated.

Further, as shown in FIG. 3, the transmitter A is provided with a battery check circuit 7. When the circuit 7 detects that the generated voltage of the battery 5 has dropped to a predetermined value or less, the control unit 1 issues a sounding command to the electronic sound buzzer 8, and the buzzer 8 outputs, for example, "pee, pee, pee,". Repeated alarms are issued. As a result, even the visually impaired can know the consumption of the battery 5.

Each time the power switch 6 is turned on,
The battery check may be confirmed. That is, when the power switch 6 is turned on and the generated voltage of the battery 5 is equal to or higher than the predetermined value, the buzzer 8 makes one beep as described above, and the generated voltage of the battery 5 is changed. When the value is below the predetermined value, the warning sound "peep, peep, peep" is emitted immediately after the power switch 6 is turned on.

Next, the receiving operation of the receiver main body B will be described with reference to FIG. In the reception standby state (a), when the radio wave signal from the transmitter A enters the antenna 24, the RF reception unit 25 tunes and receives the transmission radio wave, and further detects the wave (b), and then the control unit 21. Given. Control unit 21
Then, the system ID code K2 demodulated from the received radio wave
It is determined whether or not a matches the ID code stored in the storage unit 21a or the storage unit 23, for example (c). If the system ID codes match, the function code K3 that follows is decoded. Then, it is judged whether it is a normal function code or a special function code (d), and in the case of a special function code, the voice of the detailed guide information described above is synthesized by the voice synthesizing unit 28, and, for example, from the speaker 32. Detailed guidance information such as "The toilet location at this facility is XX on the XX floor." Alternatively, in the case of a special function code, the guidance information once issued is repeatedly issued again (e).

When it is determined that the function code is a normal function code, it is determined whether the unique ID code K2b demodulated from the radio signal and the unique ID code held in the storage unit 21a of the receiver main body B match. (F).
When it is determined that the unique ID codes are the same, the guidance information is not issued, and the process returns to the reception standby state. The demodulated unique ID code K2b is I stored in the storage unit 21a.
If it does not match the D code, the control unit 21 gives a command to the voice synthesis unit 28, and the voice synthesis unit 28 synthesizes the voice of the normal guidance information, and the speaker 32 displays, "This is a facility of ○○. Normal guidance information such as "." Is issued (h). At this time, the demodulated unique ID code K2
b is temporarily stored in the storage unit 21a (g). The retention time of this unique ID code is, for example, 10 minutes to 30 minutes, and is arbitrarily selected depending on the flow condition of people in the facility.

That is, in this radio guide device, the unique ID code K2b is different for each transmitter A, a radio wave signal from a certain transmitter A is received, and normal guide information is issued from the receiver main body B. Then, the unique ID code K2b is held in the storage unit 21a for a fixed time. Therefore, even if the same transmitter approaches the receiver main body B within this holding time, the guidance information cannot be issued. As a result, for example, after the guide information is emitted from the receiver main body B installed at a predetermined place, when the person carrying the same transmitter goes back a little, the same guide information is repeated and causes confusion. Can be prevented. Or, when a person carrying transmitter A enters from the entrance, when the guidance information such as “Welcome. This is the entrance of ○○” is issued, the same transmitter A
It is possible to prevent confusion when the person carrying the vehicle tries to leave from the same entrance and exit by repeatedly issuing the above guide information regarding entrance and the like.

As shown in FIG. 8, the receiver body B holds the unique ID code K2b only when a normal function code for generating normal guidance information is received, and It is preferable that the receiving basic body B does not hold the unique ID code when the function code of (1) is received. By doing so, even after the predetermined guide information is once output from the receiver main body at the same place, by operating the power switch 6 or the push button switch 9, the detailed guide information is heard. You can listen to the same information again or again. That is, when the person carrying the transmitter A performs a switch operation on his / her own will, the guidance information is generated from the same receiver main body B to the person carrying the same transmitter A, thereby providing guidance guidance. The effect can be enhanced.

As shown in FIG. 2, the receiver main body B is provided with a touch switch 11, and when the touch switch 11 is touched by a hand, guidance information is emitted from the speaker. As a result, even if the transmitter A is forgotten to be carried, or a healthy person or an elderly person who is not the subject of carrying the transmitter can use the guidance device. In this case, when the touch switch 11 is touched once, normal guidance information is output from the speaker 32, and when the touch switch 11 is touched twice, more detailed guidance information can be output. The touch switch 11 is not limited to this, and a slightly larger push button may be provided to replace the touch switch 11.

In the receiver body B, various settings can be made by operating switches, and this can also be done by using the remote control device C. As shown in FIG. 4, the receivable range of the receiver main body B can be arbitrarily set by switching the receiving sensitivity adjusting unit 26 such as an attenuator by the sensitivity adjusting switch 27. The volume switch 36 can adjust the volume of the speaker 32, and the channel switch 35 can switch the content of the generated guidance information.

When the switching operation of the guide information is performed, the combination of the voice data extracted from the voice data storage unit 29 to the voice synthesis unit 28 can be freely changed. It should be noted that the data stored in the voice data recording unit 29 is not limited to voice, but may be a chime or a predetermined music.
It may be a bark of a bird. By using this kind of sound, it can be used for guiding visually impaired people at intersections and pedestrian crossings.

FIG. 9 is a circuit block diagram showing a second embodiment of the transmitter of the present invention, FIG. 10 is a circuit block diagram showing a third embodiment of the transmitter, and FIG. 11 is a fourth embodiment of the transmitter. 12 is a circuit block diagram of a receiver main body corresponding to the transmitter shown in FIG. 11, and FIG. 13 is a circuit block diagram showing a fifth embodiment of the transmitter. The receiver main body shown in FIG. 12 is used as the partner side of the transmitter of the fifth embodiment shown in FIG.

The second embodiment shown in FIG. 9 and the third embodiment shown in FIG.
The transmitter A of the embodiment is an improvement on the power supply from the battery 5. Therefore, the structure other than the structure related to the power supply is the same as the circuit of the transmitter shown in FIG. 3, and in FIGS. 9 and 10, the battery check circuit 7, the electronic sound buzzer 8 and the like shown in FIG. 3 are omitted. Is shown. Further, the circuit block of the receiver main body B which is the other side of the transmitter shown in FIGS. 9 and 10 is the same as that shown in FIG. That is, the embodiment shown in FIGS. 9 and 10 is different from the transmitter shown in FIG. 3 only in the power supply, and the contents of the radio signal and the specific code sent from the transmitter to the receiver main body are shown in FIG. 5, FIG. 6, and FIG. 7, and the contents of processing in the receiver main body are the same as those shown in FIG.

In the transmitter of the second embodiment shown in FIG. 9, a vibration sensor 13 and a switch circuit 14 are added. Figure 1
When the power switch 6 shown in FIG. 6 is slid to the ON side, the power from the battery 5 causes the controller 1, the RF transmitter 3, the nonvolatile memory element 2, the timer 12, the battery check circuit 7, and the electronic sound buzzer 8 to operate. However, the vibration sensor 13 is also supplied with electric power.

When the power switch 6 is turned on, as described in the first embodiment, the radio signal S1, which is modulated by the specific code K, is set at the time interval set by the timer 12.
.. are transmitted intermittently from the antenna 4.
The control unit 1 shifts to a mode in which the vibration sensor 13 is monitored after a certain time (for example, several tens of seconds or several minutes) has passed since the power switch 6 was turned on. The control unit 1 does not issue a command while the vibration sensor 13 is detecting vibration, but if the vibration sensor 13 does not detect vibration for a predetermined time (for example, several minutes), the control unit 1 causes a command. The switch circuit 14 opens, and the control unit 1 and the vibration sensor 1
Power supply to circuits other than 3 is cut off.

When the switch circuit 14 is cut off,
As soon as the vibration sensor 13 starts to detect the vibration again, the controller 1 immediately issues a command to the switch circuit 14, the switch circuit 14 is closed, and the supply of electric power to each circuit unit is restarted. Then, the control unit 1 restarts the intermittent transmission of the radio wave signal modulated by the specific code.

That is, this transmitter A detects the vibration when a person carries it and is moving, and continues the intermittent transmission of the radio signal, but if the transmitter does not move and no vibration is detected, the intermittent transmission of the radio signal is performed. Will be stopped. Therefore, when the person carrying the transmitter stops at one location and is listening to the guidance from the installed receiver main unit B, or when the person carrying the transmitter is taking a rest such as sitting down, the transmitter should be used further. When it is finished and left on a desk or the like, the transmission is immediately stopped. This allows
It is possible to prevent the unnecessary operation of transmitting the radio wave signal, suppress the consumption of the battery 5, and enable the power-saving drive of the transmitter.

Further, in the transmitter using the vibration sensor 13, the transmission is automatically stopped when the transmitter is not used and is left on a desk or the like. Therefore, as shown in FIG. It becomes possible to have a structure in which 6 is omitted. In the transmitter of the third embodiment shown in FIG. 10, since a person carries it and moves, and the electric wave signal is intermittently transmitted only when the vibration sensor 13 detects vibration, it is not necessary to operate the power switch. However, power consumption is minimal.

The transmitter according to the fourth embodiment shown in FIG. 11 is provided with a demodulation / reception unit 15 and a switch circuit 14 so that the electric power from the battery 5 is intermittently connected and disconnected according to the first embodiment shown in FIG. Although different from the example transmitter, FIG. 9 and FIG.
Similar to that shown in FIG. 3, the structure other than the circuit related to this power supply is the same as that of the transmitter shown in FIG.

FIG. 12 shows the circuit structure of the receiver main body B which is the other side of the transmitter shown in FIG. In the receiver main body B shown in FIG. 12, only the main part is shown, but the structure other than the transmission function using the modulation / transmission unit 37 is the same as the receiver main body shown in FIG. That is, in FIG. 12, the touch switch 11, the storage unit (RAM) 23, the sensitivity adjustment switch 27, the power supply circuit 33, the reset switch 34, the channel switch 35, the volume switch 36 and the like are omitted. Further, the radio wave signals S1, S2, S3, ... Transmitted from the transmitter of FIG. 11 are the same as those shown in FIGS. 5, 6 and 7, and the reception processing in the receiver body shown in FIG. It is the same as that shown in FIG.

The transmitter of the fourth embodiment shown in FIG. 11 is provided with a demodulation / reception unit 15, the signal received by this demodulation / reception unit 15 is given to the control unit 1, and the switch is switched based on this. The circuit 14 is to be controlled. on the other hand,
The receiver main body shown in FIG. 12 is provided with a modulation / transmission unit 37, and a signal modulated with a predetermined code is transmitted from the antenna 24 at a constant cycle.

In this embodiment, a signal modulated with a predetermined code is transmitted from the antenna 24 of the receiver main body B shown in FIG. The frequency of the transmission signal is set to a band different from that of the radio signals S1, S2, S3, ... The same code content is transmitted at the same frequency from multiple receiver units B installed in certain facilities such as city halls, but the intensity of the radio waves transmitted from each receiver unit B is the same as the receiver unit. The range is limited to a certain range centered on B, and the radio waves of different receiver bodies B are set so as not to interfere with each other. Alternatively, the code content of the signal transmitted by each receiver body B may be changed, or the frequency may be changed. However, in consideration of the receiving capability of the transmitter A side, it is preferable to transmit radio waves having the same code content at the same frequency from each receiver body B.

In the controller 1 of the transmitter A shown in FIG. 11, with the power switch 6 in the ON state, the reception confirmation operation is repeated at a cycle shorter than the intermittent transmission cycle of the signal emitted from the receiver main body B. When a person carrying the transmitter A approaches a specific receiver body B, the signal transmitted from the receiver body B is received by the demodulation / reception unit 15 of the transmitter A and demodulated to the control unit 1. Sent. In the control unit 1, the received signal is discriminated based on the code contents stored in advance, and when it is determined that the signal is from the receiver main body B, the switch circuit 14 is closed and the RF transmission unit 3 and Electric power is supplied to the nonvolatile memory element 2 and the like, and intermittent transmission of the radio signal is started. Then, in the receiver main body B shown in FIG. 12, the code K of the radio signal from the transmitter A is decoded and the guidance information is output as described above.

Further, the person carrying the transmitter A moves away from the specific receiver main body B, and the signal transmitted from the receiver main body B is not received by the transmitter A, but the received signal is confirmed by the control unit 1. When it is no longer done, switch circuit 14 is cut off, R
The power supply to the F transmitter 3 and other circuit parts is cut off.

In this embodiment, the radio wave signal is not always emitted from the transmitter A, but the radio wave signal is transmitted from the transmitter only when the receiver body B is approached and the signal from the receiver body B is received. . Therefore, the transmitter does not repeat unnecessary radio wave transmission, the consumption of the battery 5 is suppressed, and the power saving drive becomes possible.

The transmitter of the fifth embodiment shown in FIG.
The vibration sensor 13 shown in FIG. 9 is combined with the transmitter shown in FIG. The structure of the receiver installed on the other side of the transmitter shown in FIG. 13 is the same as that shown in FIG. FIG.
The transmitter shown in (1) emits a radio wave signal only when the signal emitted from the receiver main body B is received, but when the vibration sensor 13 does not detect vibration for a predetermined time, the intermittent transmission of the radio wave signal is stopped.

That is, only when the person carrying the transmitter approaches the specific receiver main body B and is moving, a radio wave signal is intermittently emitted from the transmitter and the receiver main body B transmits You will be able to hear the guide information. Therefore,
For example, when listening to the guide information from a specific receiver body B and then stopping or resting near the receiver body B, unnecessary radio wave signals are not transmitted, and power consumption can be further reduced. . The power switch 6 may be omitted in the embodiment shown in FIG.

As described in the first embodiment, in the present invention, the first radio wave signal S1 or the first plurality of radio wave signals S1 and S2 and the radio wave signals continuing to the first radio wave signal S1 when a specific operation is performed. With this, the contents of the function code are made different, and different guide information is issued in the receiver main body according to the type of the function code. In the transmitters shown in FIGS. 9, 11, and 13, for example, the function code is changed between the first radio signal and the subsequent radio signal only when the power switch 6 is turned off and then turned on again, and the power switch 6 is turned on. Only when this is done, special guidance information will be issued. However, since the power switch is not provided in the embodiment shown in FIG. 10, the push button switch 9 shown in FIG. 3 is provided in this case. When the push button switch 9 is pressed, a radio signal including a specific function code is emitted, and the speaker 32 indicates, for example, "the toilet location at this facility is the XX location on the XX floor." Guidance information is issued,
Alternatively, the guidance information once issued is repeatedly issued again.

Further, when the vibration detection by the vibration sensor 13 is stopped for a predetermined time and the transmitter stops the intermittent transmission of the radio wave signal, and then the vibration sensor 13 detects the vibration and the transmission of the radio wave signal is restarted, or Power switch of transmitter is ON
When the signal from the receiver body is received by the transmitter and the radio signal is output from the transmitter in the state of being turned on, the specific code of the radio signal sent from the transmitter to the receiver at this time is the normal code. It is a function code and does not include the specific function code described above. That is, the specific function code for obtaining the above detailed guidance information is
Only when the power switch 6 is turned on or when a specific operation such as pressing the push button switch 9 is performed.

[0082]

As described above, according to the present invention, it is possible to guide the visually impaired person by providing the optimum guidance information, and the guidance information can be automatically obtained without operating the transmitter. it can. In addition, it is possible to rebroadcast the guide information and generate more detailed guide information by the operation of the transmitter carrier. It is also possible to prevent unnecessary repetition of guidance information. Furthermore, the visually impaired person can recognize the operating state of the power switch and the exhausted state of the battery. Further, it becomes possible to generate the guide information without carrying the transmitter. You can also remotely control the settings of the receiver itself.

Further, if the transmitter is provided with a vibration sensor or has a structure in which a signal is emitted from the transmitter in response to a transmission from the receiver body, it is possible to prevent unnecessary continuation of the transmission from the transmitter. It is possible to reduce the consumption of the battery mounted on the machine, and it becomes possible to drive with low power consumption.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a transmitter,

FIG. 2 is a perspective view showing the appearance of a receiver body and a remote control device,

FIG. 3 is a circuit block diagram showing the internal structure of the transmitter of the first embodiment,

FIG. 4 is a circuit block diagram showing an internal structure of a receiver body,

FIG. 5 is an explanatory diagram showing a radio signal from a transmitter,

FIG. 6 is an explanatory diagram showing the contents of a specific code that modulates a radio signal.

FIG. 7 is an explanatory diagram showing another example of a specific code that modulates a radio signal.

FIG. 8 is a flowchart showing a reception operation in the receiver body,

FIG. 9 is a circuit block diagram showing a structure of a transmitter according to a second embodiment,

FIG. 10 is a circuit block diagram showing a structure of a transmitter according to a third embodiment,

FIG. 11 is a circuit block diagram showing a structure of a transmitter according to a fourth embodiment,

FIG. 12 is a circuit block diagram of a receiver main body which is a counterpart of the transmitter shown in FIG.

FIG. 13 is a circuit block diagram showing a structure of a transmitter according to a fifth embodiment,

[Explanation of symbols]

 A transmitter B receiver body C remote control device S1, S2, ... radio signal K specific code K2a system ID code K2b unique ID code K3 function code 1 control unit 3 transmission unit 4 transmission antenna 5 battery 6 power switch 11 touch switch 13 Vibration sensor 14 Switch circuit 15 Demodulation / reception section 21 Control section 24 Reception antenna 25 RF reception section 26 Reception sensitivity adjustment section 28 Voice synthesis section 29 Voice data storage section 32 Speaker 37 Transmission / modulation section

Claims (11)

[Claims] 1. A portable transmitter that intermittently transmits a signal modulated by a specific code, and a specific code received having a function of receiving the transmission signal is identical to a code stored in advance. A wireless guide device comprising: an installed receiver that emits predetermined guide information when the user is present. 2. A portable transmitter that intermittently transmits a signal modulated with a specific code, and a specific code received having a function of receiving the transmission signal is identical to a code stored in advance. A receiver that emits predetermined guidance information when the transmitter is present, the transmitter is provided with a transmitter that transmits a signal intermittently, and the transmitter is provided with a device that receives the signal. The wireless guide device emits a signal modulated by a specific code when the signal is received from the installed receiver. 3. The wireless guide device according to claim 1, wherein the transmitter is provided with a sensor for detecting vibration, and the intermittent transmission from the transmitter is stopped when the sensor does not detect vibration for a predetermined time or longer. . 4. A specific code of a signal transmitted intermittently includes an ID code and a function code, and the function has a content different from a normal function code only when a specific operation is performed by the transmitter. 4. The wireless guide device according to claim 1, wherein a code is issued, and guide information is selected in the receiver according to the content of the function code. 5. The function code different from the normal is issued only once or a few times when the power switch provided in the transmitter is operated, and the normal function code is issued in the subsequent transmission. The wireless guide device described. 6. The specific code includes a unique ID code that is different for each transmitter, the receiver holds the received unique ID code, and a code that includes the same unique ID code is received within a certain period of time. The wireless guide device according to any one of claims 1 to 5, wherein the guide information is not provided when the radio guide device operates. 7. The wireless guide device according to claim 1, wherein the transmitter is provided with a sounding unit that emits a predetermined sound when the power switch is turned on. 8. The wireless guide device according to claim 1, wherein the transmitter is provided with a battery check circuit and a sounding means for emitting a sound according to the check content of the battery check circuit. 9. The wireless guide device according to claim 1, wherein the receiver is provided with a sensitivity adjustment unit that arbitrarily sets a reception range. 10. The receiver is provided with a switch,
The wireless guide device according to any one of claims 1 to 9, wherein when the switch is operated, the guide information is issued without receiving from the transmitter. 11. The wireless guide device according to claim 1, further comprising an operating device that wirelessly operates the setting of the receiver, separately from the transmitter.