KR100702139B1 - Audio guiding device and the control method thereof - Google Patents

Abstract

A voice inducement device and a controlling method are provided to detect exact electric field strength by properly controlling the receive sensitivity of radio waves received from a remote controller, based on a predetermined numerical value, thereby outputting an announcement when the distance between the device and the remote controller is within a preset dynamic range. A dynamic range storage stores dynamic range data used for determining an announcement voice for the visually impaired and whether the announcement voice is broadcast. A dynamic range control switch(141) selects random dynamic range data among the dynamic range data. A receive sensitivity controller(128) controls an SNR(Signal to Noise Ratio) into a predetermined ratio, from a signal received from a remote controller which delivers a voice inducement signal. An electric field strength detector(127) detects electric field strength from the ratio-controlled signal. A microcomputer(110) obtains the distance between the remote controller and a voice inducement device based on the field strength, and controls so that the announcement voice is broadcast through a speaker(195) when the obtained distance is within a dynamic range selected by the switch(141).

Description

Speech guiding device and the control method

1 is a block diagram of a speech induction device according to the present invention;

FIG. 2 is a schematic view showing an exemplary mobile passage of subway station in which the voice induction apparatuses of FIG. 1 are installed;

3 is a schematic view showing an example of a 10-floor lobby of a building in which the voice guidance apparatuses of FIG. 1 are installed;

4 is a conceptual diagram illustrating that the voice guidance apparatuses of FIG. 3 operate sequentially;

5 is a flowchart illustrating a control method of a voice induction device according to an exemplary embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

100: voice induction device 105: antenna

110: microcomputer 120: RF receiver

121: filter unit 122: high frequency amplifier

123: frequency converter 124: intermediate frequency amplifier

125: demodulator 126: phase difference detector

127: electric field strength detection unit 128: reception sensitivity control unit

130: time adjuster 140: switch

141: operation distance control switch 143: start time adjustment switch

145: stop time adjustment switch 147: convenience function control switch

150: memory 151a: operation distance setting table

151b: Start time setting table 151c: Stop time setting table

151d: Convenience function setting table 153a: Basic voice recording unit

153b: selection guide voice storage 160: LED driver

165: LED 170: volume control

171: Night Volume Control 173: Basic Guide Volume Control

175: selection guide volume control 177: integrated control

180: power supply unit 181: power control unit

183: external power 185: emergency power

190: volume amplifier 195: speaker

The present invention relates to a voice induction apparatus and a control method, and in particular, to detect electric field strength of radio waves received from a transmission apparatus carried by a visually impaired person, and to perform announcement broadcast when the distance to the transmission apparatus is within a preset operating distance. The present invention relates to a voice guidance device and a control method.

In general, the voice guidance device needs to guide visually impaired people such as entrances, staircases, elevators for the disabled, restrooms, ticket gates and platforms, or needs voice guidance for traffic safety of the visually impaired, such as the front of a dangerous place. It is selectively installed in the wall or ceiling of the location in consideration of the facility structure. Such a voice induction device responds to radio waves received from a voice induction transmitter (hereinafter referred to as a remote controller) that is carried by a visually impaired person, and detects a reception sensitivity, that is, a signal-to-noise ratio or an electric field strength of a signal, thereby correspondingly. After determining the distance to the remote control and if the distance to the remote control is within the preset operating distance will be a guide broadcast. On the other hand, the Ministry of Information and Communication enacted a radio standard on October 27, 2004 regarding communication protocol, structure, performance, and inspection method for compatibility of remote controller and voice induction device and prevention of malfunction by signals of other electronic devices. The frequency band used for the audio induction device is 385.5 MHz.

However, according to the conventional voice induction device that detects the reception sensitivity to determine the distance from the remote control, the reception sensitivity is changed by changing environmental factors such as temperature and humidity, so that the operation distance of the corresponding voice induction device is changed. There is this. In addition, according to the conventional voice induction device to detect the electric field strength to determine the distance from the remote control, the reception sensitivity may be different for each voice induction device according to the components and design characteristics of the high frequency amplification unit of the voice induction device. Therefore, since the electric field strength value according to the reception sensitivity may be different for each voice induction device, there is a problem that the operation distance value intended by the designer for the first time cannot be obtained uniformly in all devices.

Furthermore, when a large number of voice induction devices are installed in adjacent distances in order to provide various information to the visually impaired, that is, when the voice induction devices share the operating distance with each other, a guide broadcast by the transmission signal of the remote controller is output simultaneously. As a result, the visually impaired person does not acquire accurate information, but there is a problem that the announcement is heard as noise.

The present invention has been made to solve the above problems, by adjusting the reception sensitivity of the radio wave received from the remote control to a predetermined value to detect the exact electric field strength, when the distance to the remote control is within a predetermined operating distance It is an object of the present invention to provide a speech induction device capable of announcement broadcasting.

Another object of the present invention is to provide a voice guidance device and a control method capable of sequentially guiding and broadcasting in a predetermined order when a plurality of voice guidance devices are installed at adjacent distances.

According to an aspect of the present invention, there is provided a voice inducing device comprising: an operating distance storage unit for storing voice information for the visually impaired and operating distance data used to determine whether the voice is broadcast; An operation distance control switch configured to select an arbitrary operation distance data from the operation distance data; A reception sensitivity controller configured to adjust a noise ratio of the signal to the signal at a predetermined ratio in a signal received from a remote controller for transmitting a voice guidance signal; The distance from the remote control is calculated based on the electric field strength detection unit detecting the electric field strength from the signal adjusted by the ratio and the electric field strength, and the distance from the remote control is within the operating distance selected by the operation distance control switch. The present invention provides a voice induction device including a microcomputer for controlling the broadcasting of the guide voice through a speaker.

In addition, the voice guidance apparatus of the present invention for achieving the above object comprises a start time storage unit for storing the guide voice for the visually impaired and the start time data used to determine the broadcast time for the guide voice; A start time adjustment switch configured to select an arbitrary start time data from the start time data; When a signal is received from a remote controller that transmits a voice guidance signal, controlling to broadcast the guide voice through a speaker after the start time selected by the start time adjustment switch has elapsed from the time point at which the signal is received. Provided is a voice guidance device comprising a microcomputer.

In addition, the control method of the voice induction device according to the present invention is a voice for the visually impaired, the start time data used to determine the broadcast time for the announcement voice, and for a predetermined time immediately after the broadcast for the announcement voice The storage unit stores the stop time data used to prevent the broadcast; Control to broadcast the announcement voice through the speaker based on the switch and the switch state to select any start time data from the start time data or any stop time data from the stop time data Performed by the microcomputer in a voice induction device including a microcomputer, (a) confirming whether a signal is received from a remote controller that transmits a voice induction signal; (b) if a signal is received from the remote controller, waiting for a broadcast of the announcement voice during the start time selected by the start time switch from a time point at which the signal is received; (c) broadcasting the guide voice through a speaker when the start time has elapsed in step (b); and (d) during the stop time selected by the stop time switch after the broadcast is finished in step (c). It provides a control method of the voice induction device comprising the step of not responding to the signal received from the remote control.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the voice guidance device and the control method according to a preferred embodiment of the present invention.

1 is a block diagram of a speech induction apparatus according to the present invention, the configuration of the speech induction apparatus 100 according to the present invention is an antenna 105 for receiving a radio wave, a signal of the remote control in the radio wave received from the antenna 105 RF receiver 120 for detecting and processing the signal, time adjustment unit 130 for measuring the current time, switch 140 for adjusting the operation state of the voice induction apparatus 100, guidance guidance sound and voice guidance for the visually impaired Memory 150 in which a data table indicating an operation state of the device 100 is stored, an LED 165 indicating whether a voice induction device 100 is malfunctioning, an LED driver 160 driving the speaker, and a speaker 195 Volume amplification unit 190 for amplifying the guide sound output through the volume, the volume control unit 170 for adjusting the volume output through the speaker 195, the power supply unit 180 for supplying the driving power of the voice induction apparatus 100 ) And voice guidance device 100 is collectively controlled The microcomputer 110 is made to include.

On the other hand, the detailed configuration of the RF receiver 120 is a filter unit 121 that passes only the 385.5MHZ band, which is a frequency for the visually impaired guidance signal in the radio wave received from the antenna 105, which is transmitted from the remote control while suppressing the amplification of noise signals as much as possible A high frequency amplifier 122 for amplifying a signal, a frequency converter 123 for down converting a low noise amplified signal from the high frequency amplifier to an intermediate frequency, for example, a 10.7 MHz band, which is an intermediate frequency band of a general receiver, to an intermediate frequency. An intermediate frequency amplifier 124 for amplifying the converted signal, a demodulator 125 for detecting data amplified by the intermediate frequency amplifier 124, extracting data, a phase difference detector 126 for detecting a phase difference of the signal, It includes a field strength detector 127 for detecting the electric field strength of the intermediate frequency and a reception sensitivity controller 128 for constantly adjusting the reception sensitivity of the signal amplified by the high frequency amplifier 122 It is done by In the configuration of the RF receiver 120 described above, the filter unit 121 may be implemented as a band pass filter (BPF), the high frequency amplifier 122 may be implemented as a low noise amplifier (LNA), The frequency converter 123 may be implemented as a phase locked loop (PLL), a local oscillator (RF local oscillator), and a downconversion mixer (RF down mixer), and the field strength detector 127 is a RSSI (Received). Signal Strength Indecator).

Next, the switch 140 may be implemented as a dip switch. The detailed configuration may include an operation distance adjusting switch 141 for setting a distance in which the voice induction apparatus 100 operates in response to a signal transmitted from a remote controller. When the transmission signal of the remote control is within the operating distance, for example, when the announcement starts, for example, a start time adjustment switch 143 that is set to start immediately or starts after 5 seconds, and outputs the announcement for the visually impaired. Then, the stop time does not respond to the signal of the remote control again received, for example, the stop time adjustment switch 145 to set to stop for 10 seconds and the day / night volume, for example, 70dB during the day (7 ~ 19 hours) Set to 40dB at night, and set to output the location sound at intervals of 5 seconds, for example, the period of the guided sound (hereinafter referred to as the location sound) to guide the position of the voice guidance device 100 to the visually impaired The convenience function comprises a control switch 147.

Next, the memory 150 may be implemented as an erasable and programmable-read only memory (EPROM) that can be written several times. The detailed configuration is an operation distance setting table 151a in which distance data for operating the voice induction apparatus 100 is stored. ), A start time setting table 151b in which time point data for starting an announcement broadcast is stored, and a stop time setting table in which stop time data that does not respond to a signal of a remote controller that is received again after outputting a guide broadcast for the visually impaired ( 151c), the convenience function setting table (151d) storing the periodic data of day / night volume and location sound, and the voice for inducing the visually impaired. For example, 'This is the ticket office' for the voice induction device installed in the subway ticket office. For example, the 'Vending Machine' is located on the right side of the ticket office. Selection Guide selection guide voice is stored, such as "comprises a voice storage unit (153b).

In particular, when the operation distance, start time and stop time switches 141, 143, and 145 are each implemented by four dip switches and the convenience function switch 147 is implemented by three dip switches, Accordingly, the data stored in the setting tables 151a to 151d are as Tables 1 to 4 described later. Meanwhile, the installer of the voice induction device 100 may modify data stored in the memory 150.

no. Operation distance control switch status Operating distance No. Operation distance control switch status Operating distance One 0 0 0 0 50 m 9 1 0 0 0 8m 2 0 0 0 1 31m 10 1 0 0 1 7m 3 0 0 1 0 28 m 11 1 0 1 0 6m 4 0 0 1 1 20 m 12 1 0 1 1 5 m 5 0 1 0 0 16m 13 1 1 0 0 4.5m 6 0 1 0 1 15 m 14 1 1 0 1 3m 7 0 1 1 0 10 m 15 1 1 1 0 2 m 8 0 1 1 1 9m 16 1 1 1 1 1m

no. Start time control switch status Start time No. Start time control switch status Start time One 0 0 0 0 Start right away 9 1 0 0 0 After 28 seconds 2 0 0 0 1 7 seconds later 10 1 0 0 1 31 seconds later 3 0 0 1 0 10 seconds later 11 1 0 1 0 After 34 seconds 4 0 0 1 1 13 seconds later 12 1 0 1 1 37 seconds later 5 0 1 0 0 16 seconds later 13 1 1 0 0 40 seconds later 6 0 1 0 1 19 seconds later 14 1 1 0 1 43 seconds later 7 0 1 1 0 22 seconds later 15 1 1 1 0 46 seconds later 8 0 1 1 1 25 seconds later 16 1 1 1 1 49 seconds later

no. Stop time adjustment switch status Stop time No. Stop time adjustment switch status Stop time One 0 0 0 0 none 9 1 0 0 0 28 seconds pause 2 0 0 0 1 7 seconds pause 10 1 0 0 1 Stop for 31 seconds 3 0 0 1 0 10 seconds pause 11 1 0 1 0 34 seconds pause 4 0 0 1 1 13 seconds pause 12 1 0 1 1 Stop for 37 seconds 5 0 1 0 0 Stop for 16 seconds 13 1 1 0 0 40 seconds pause 6 0 1 0 1 19 seconds pause 14 1 1 0 1 43 seconds pause 7 0 1 1 0 22 seconds pause 15 1 1 1 0 46 seconds pause 8 0 1 1 1 25 seconds pause 16 1 1 1 1 Stop for 49 seconds

No. Convenience Function Control Switch Status Volume size Location acoustic cycle weekly Nighttime weekly Nighttime One 0 0 0 90 dB 60 dB 5 second intervals 20 second intervals 2 0 0 1 85 dB 60 dB 10 second intervals 25 second intervals 3 0 1 0 80 dB 50 dB 15 second intervals 30 second intervals 4 0 1 1 75 dB 50 dB 20 second intervals 35 second intervals 5 1 0 0 70 dB 40 dB 25 second intervals 40 second intervals 6 1 0 1 65 dB 40 dB 30 second intervals 50 second intervals 7 1 1 0 90 dB 10 second intervals 8 1 1 1 70 dB 20 second intervals

Next, the detailed configuration of the volume control unit 170 is a basic guide volume control unit 173 for adjusting the voice stored in the basic guide voice storage unit 153a to be output as the volume according to the convenience function control switch 147 state Implemented by the selection guide volume control unit 175, RTC (Real Time Clock) and battery to adjust the voice stored in the selection guide voice storage unit 153b to be output at the volume according to the convenience function control switch 147 state If the current time input through the time adjustment unit 130 may be a night time volume control unit 171 and the volume control unit to adjust the current volume down based on the convenience function control switch 147 state than the day And an integrated control unit 177 for adjusting the primary adjusted volume to be equally amplified at 171, 173, and 175.

Finally, the detailed configuration of the power supply unit 180 is an external power source 183, which is AC 110 / 220V for supplying driving power of the voice induction apparatus 100, and an emergency power source 185, which is a DC power supply for supplying driving power in case of power failure. And a power control unit 181 for converting AC voltage into DC voltage and stepping down.

On the other hand, Figure 2 is a schematic diagram showing a moving passage of the subway station installed with the voice induction apparatus of Figure 1 by way of example. As can be seen in Tables 1 to 4, for example, the voice induction device 100a installed in the ticket gate has an operating distance control switch 141 state of '0101', and a start time control switch 143 state of '0000'. ', When the stop time control switch 145 state is' 0000', and the convenience function control switch 147 state is' 111 ', only the broadcast signal of the remote controller within a radius of 15 m is directly broadcasted without stop time. . In addition, the voice induction apparatus 100a outputs '70 dB 'without discriminating day / night and outputs guided sounds at 20 second intervals. Similarly, the voice induction apparatus 100b installed in the ticket office and the voice induction apparatus 100c installed in the toilet also operate according to the state of each switch 140. In addition, the voice induction apparatus 100 according to the present invention detects the electric field strength which is not influenced by the environment by constantly adjusting the reception sensitivity input through the reception sensitivity adjusting unit 128 to 20 dB, for example. By doing so, the distance from the remote control corresponding to the electric field strength can be accurately obtained. Accordingly, the possibility of the voice guidance apparatuses 100a, 100b, and 100c simultaneously providing announcements is blocked.

FIG. 3 is a schematic view illustrating a 10-floor lobby of a building in which the voice guidance apparatuses of FIG. 1 are installed, and FIG. 4 is a conceptual view illustrating that the voice guidance apparatuses of FIG. 3 operate sequentially.

As shown in FIG. 3, a visually impaired person in a 10-floor lobby having a radius of, for example, within 2 to 3 meters in a low-rise or high-rise elevator will operate the remote control immediately. At this time, the operation distance control switch 141 of the induction voice device 100d, 100e, 100f, 100g is adjusted to a switch state that can include all the lobby, and the start time and stop time adjustment switches 143 and 145 state. If respectively set as shown in Figure 4, the guided voice device (100d, 100e, 100f, 100g) is a guide broadcast sequentially. In addition, even if the visually impaired person operates the remote control again while the voice guidance device 100e installed in the Seoul Office of the Patent Office operates the remote control again, the other voice guidance devices 100d, 100f, and 100g have preset start and stop times. Duplicate announcements will be blocked.

5 is a flowchart illustrating a control method of a voice induction device according to an exemplary embodiment of the present invention, and it is clear that the subject is the microcomputer 110. If the data stored in the setting tables 151a to 151d are as shown in Tables 1 to 4, the operation distance adjusting switch 141 of the voice induction apparatus described in FIG. 5 is '0011 (= 20m)' The control switch 143 state is' 0001 (start after 7 seconds) ', the stop time adjustment switch 145 is' 0011 (stop for 7 seconds)', and the convenience function control switch 147 is' 010 Note that (= Day (80 dB) / Night (50 dB), Day (15 second intervals) / Night (30 second intervals).

First, in step S11, after checking the state of the switch 140 is set in advance as described above, and proceeds to step S13 to check the current time input through the time adjuster 130. In the next step S15, when the current time is day (7 o'clock to 19 o'clock), position sound is generated at 15 second intervals, for example, "Ding ~ Dong", and when the current time is night, the position sound is generated at 30 second intervals. Let's do it.

Next, in step S17 it is checked whether there is a signal received from the remote control through the RF receiver 120. As a result of checking in step S17, if there is no signal received, the process returns to step S11, and if there is a received signal, the process proceeds to step S19 and the reception sensitivity of the signal input through the reception sensitivity adjusting unit 128 is, for example, '20dB. Adjust it constantly.

Next, in step S21, the electric field sensitivity of the signal detected by the electric field sensitivity adjusting unit 127 is checked to determine whether the position of the remote controller is within 20 m. As a result of the determination in step S21, when the position of the remote control is out of 20m, the process returns to step S11, and when the position of the remote control is within 20m, the process proceeds to step S23. In step S23, the positional sound output through the speaker 195 is stopped at intervals of 15 seconds or 30 seconds, and then the process proceeds to step S25 to wait for 7 seconds.

Next, in step S27, according to the state of the convenience function control switch 147, the announcement is performed at 80dB during the day, and the announcement is broadcast at 50dB by adjusting the sound downward through the night volume control unit 171 at night. Next, the announcement is ended and the process proceeds to step S29 to stop the announcement for seven seconds according to the state of the stop time adjustment switch 145. Finally, as long as the power is not turned off in step S31, the process returns to step S11 to repeat the process so far.

The speech induction apparatus and the control method of the present invention are not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

According to the voice induction apparatus and the control method of the present invention as described above, there is an effect that can set the correct operating distance by detecting the electric field strength is not affected by environmental factors and component characteristics of the voice induction apparatus.

In addition, when a large number of voice guidance devices are installed at adjacent distances and need to perform voice guidance at the same time, the visually impaired person can acquire accurate information by sequentially guiding broadcasting in a predetermined order.

Claims (9)

An operation distance storage unit for storing an operation voice for the visually impaired and an operation distance data used to determine whether to broadcast the announcement voice; An operation distance control switch configured to select an arbitrary operation distance data from the operation distance data; A reception sensitivity controller configured to adjust a noise ratio of the signal to the signal at a predetermined ratio in a signal received from a remote controller for transmitting a voice guidance signal; An electric field strength detector for detecting electric field strength from the signal adjusted at the ratio; Obtaining a distance from the remote control based on the electric field strength, if the distance to the remote control is within the operating distance selected by the operating distance control switch to control to broadcast the guide voice through a speaker Voice guidance device comprising a microcomputer. delete A start time storage unit for storing a guide voice for the visually impaired and start time data used to determine a broadcast time point for the guide voice; A start time adjustment switch configured to select an arbitrary start time data from the start time data; A pause time storage unit configured to store pause time data used to prevent a broadcast for a predetermined time immediately after the broadcast of the guide voice ends; A stop time adjustment switch configured to select an arbitrary stop time data from the stop time data; When a signal is received from a remote controller that transmits a voice guidance signal, the guidance is received through a speaker for a stop time selected by the stop time control switch after the start time selected by the start time control switch has elapsed from the time point at which the signal is received. Voice guidance device comprising a microcomputer for controlling the broadcast of the voice. The method according to claim 1 or 3, A convenience function storage unit for storing volume data of the guide voice or output period data of the guide sound for guiding a position of the voice inducing apparatus; And a convenience function control switch configured to select an arbitrary volume from among the volume data stored in the convenience function storage unit or to select an arbitrary guide sound period. The method of claim 4, wherein The volume data and the guide sound period stored in the convenience function storage unit is stored in the day / night is divided and stored. The method of claim 4, wherein And a volume control unit for adjusting the guide voice to be output at the volume selected by the convenience function control switch. The method of claim 6, The volume control unit is a voice guidance device, characterized in that to adjust the lower than the volume selected by the convenience function control switch at night. Stores the announcement voice for the visually impaired, the start time data used to determine the broadcast time for the announcement voice, and the stop time data used to stop the broadcast for a certain time immediately after the announcement for the announcement voice part; A switch configured to select any start time data from the start time data or to select any stop time data from the stop time data; and The microcomputer is performed by the microcomputer in a voice induction device including a microcomputer to control the broadcast of the guide voice through a speaker based on the switch state. (a) checking whether a signal is received from a remote controller that emits a voice guidance signal; (b) if a signal is received from the remote controller, waiting for a broadcast of the announcement voice during the start time selected by the start time switch from a time point at which the signal is received; (c) broadcasting the guide voice through a speaker when the start time has elapsed in step (b); and and (d) not responding to a signal received from the remote controller during the pause time selected by the pause time switch after the broadcast is finished in step (c). The method of claim 8, The control method of the voice guidance apparatus, characterized in that when the current time is in the night (c) step to adjust the volume of the broadcast announcement voice lower than the daytime.

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