JP2002267484A - Guidance system and terminal device to be guided - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guidance system by which a user can be guided easily to a destination point and to provide a terminal device to be guided. SOLUTION: The destination point is instructed from a portable terminal device 30, and a passage guidance service is requested. Then, a service control part 57 starts to send out a signal to a small radio base station 20 in the instructed destination point. By a comparison part 105 in the device 30, the detection output of a present-reception-level detection part retained in a buffer 104 is compared with a detection output before a prescribed interval (Δt). A processing selection part 125 displays a warning by a loudspeaker 134 or the like according to a compared result when the field strength of the signal from the base station 20 is lowered, and the user is informed that a movement direction is erroneous.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guidance system for guiding a user to a destination and a guided terminal device.

[0002]

2. Description of the Related Art As a method for guiding a user to a destination, a GPS (Global Positio) receiving a radio wave from a satellite is used.
navigation system) and a method of navigating based on map data and the like are known, but in order to detect the position, it is necessary to launch a satellite,
A dedicated receiver, a means for storing map data, and the like are required, and there has been a problem that the cost is high.

As a service that provides a user's location at a relatively low cost, a location information service that provides information such as a map indicating the location of a portable telephone device (terminal device) via the Internet or a facsimile network is known. .

In a so-called cellular type mobile phone system, the position of a terminal device is grasped by a system that performs line control, and control is performed so as to communicate with an appropriate base station according to the position of the terminal device. ing. For this reason, by using the position of the terminal device grasped in this way, information indicating the position of the user can be provided to users of the Internet and the facsimile network.

[0005]

However, in the above-described location information service, information such as a map indicating the position of the terminal device is provided via the Internet or a facsimile network, and is provided via these communication networks. User using a terminal device that cannot receive the information
The terminal cannot use the location information service.

In such a case, when trying to guide the user of the terminal device to the destination using the location information service, for example, the user gives the location information of the terminal device to another person using the location information service. And required to explain the route to the destination. For this reason, when trying to provide guidance using the conventional location information service, complicated processing was required.

[0007] The present invention has been made in view of the above-described problems, and has as its object to provide a guidance system and a guided terminal device that can easily guide a user to a destination.

[0008]

In order to solve the above-mentioned problems, a guidance system according to the present invention provides a guided terminal device based on a guided wave generated by a guided wave generating means provided at a destination. A guidance system for guiding to a destination, wherein a guided terminal device measures intensity of an electric field of an induced radio wave from an induced radio wave generating device, and an electric field intensity of the induced radio wave measured by the intensity measuring device. And notifying means for notifying information on the direction to travel to the destination according to a time change with the movement of the guidance terminal device.

In this guide system, the notification means
Information on the direction to travel to the destination can be reported in accordance with the time change of the electric field strength of the guided radio wave measured by the strength measuring means with the movement of the guided terminal device. The user can recognize the direction to go to the destination by this notification.

[0010] According to the present invention, the other guidance system further provides a cellular type mobile communication service, detects the position of the guided terminal device, and guides map information corresponding to the detected position. It has a carrier facility having a function of supplying to the terminal device, and a display means for displaying map information supplied from the carrier facility when the guided wave from the guided wave generating means at the destination cannot be received.

[0011] The cellular mobile communication service referred to herein is a mobile communication service having at least means for detecting the position of a guided terminal device in accordance with a communication state with the guided terminal device. That is.

[0012]

FIG. 1 is a block diagram showing the configuration of a passage guidance system according to an embodiment of the present invention. As shown in FIG. 1, the path guidance system includes a radio base station 10 (10 ₁ , 10 ₂ , 10 ₃ , 10 ₄ ,...) That provides communication services such as voice communication and data communication.
It comprises a small radio base station 20 that provides a path guidance service, and a portable terminal device 30 that can be used for communication services and path guidance services.

Although only one small radio base station 20 and one portable terminal device 30 are shown in FIG.
These numbers are not particularly limited, and a plurality of them may be provided.

The radio base station 10 includes, for example, areas (cells) provided at predetermined intervals in an area for providing a communication service.
The communication service is provided for each mobile terminal device 30 in or near the cell. The small radio base station 20 is installed at the destination point (position A) of the path guidance service, and provides a path guidance service for guiding a user of the service to the destination point. More specifically, the small radio base stations 20 are specifically installed in, for example, an urban area, particularly an area such as a building area or a downtown area where there are many points that can be the destination points of the passage guidance service.

The curve on the concentric circle shown in FIG.
5 is an iso-electric field strength curve showing a distribution of electric field strength of a signal (guide radio wave) from the small wireless base station 20. In this path guidance system, the user of the portable terminal device 30 is guided to a destination point where the small wireless base station 20 is installed, according to the distribution of signals from the small wireless base station 20.

As shown in FIG. 2, the path guidance system includes a radio line control station 40 for controlling selection of a radio base station 10 that provides a communication service to the portable terminal device 30 and a portable terminal device 30. And a path guidance service center 50 for controlling selection of a small radio base station 20 that provides a path guidance service.

The radio network controller 40 includes a mobile terminal 30
The position of the mobile terminal device 30 is detected in accordance with the strength of a signal from the wireless base station 30 and the wireless base stations 10 ₁ and 10 used for communication services.
₂ , 10 ₃ , 10 ₄ ,... Are appropriately selected. Also, small passages assistance service center 50, small radio base station ₂₀ 1 used in the path guidance service in accordance with the destination point selected by the _user, 20 _2, 20 3, ₂₀ 4, which select ..., selected A path guidance service is provided to the mobile terminal device 30 via the wireless base station 20.

As shown in FIG. 3, for example, the portable terminal device 30 includes an RF processing unit 100 for processing a signal in a high frequency band (Radio Frequency) for communicating with the radio base station 10 and the small radio base station 20; The system includes a baseband processing unit 110 for processing a signal in a baseband band, and a user interface (UI) processing unit 120 for providing a user interface such as display and input to a user.

The baseband processing unit 110 receives the received signal /
An amplifier (AMP) 101 for amplifying a transmission signal, a modulation / demodulation unit 102 for modulating a high-frequency signal and a demodulation of a baseband signal, and a reception level detection unit 103 for detecting a reception level of a radio wave from the small radio base station 20 A buffer 104 for holding the detection output of the reception level detection unit 103 at predetermined intervals, and a comparison unit 105 for detecting a change in the detection output of the reception level detection unit 103.

A baseband processing unit 110 executes a multiplexing / demultiplexing unit 111 for multiplexing and demultiplexing a communication control signal, a signal for voice communication, a signal for data communication, and the like, and performs communication control such as calling and receiving. A communication control unit 112 that performs processing in data communication, a data processing unit 113 that performs processing and the like, and a voice encoding / decoding unit (voice CODEC) 114 that encodes and decodes a voice signal.

The UI processing unit 120 includes a memory, an arithmetic processing unit, and executes a control program.
A display control unit 122 for controlling display to the user, and an input control unit 123 for controlling input such as instructions from the user
And a selector 124 for selecting a voice signal, and a display form of a route guide (voice, image display, LED, vibrator)
And a processing selection unit 125 for selecting

Further, the portable terminal device 30 has a display unit 131 for displaying an image corresponding to a passage guidance service, a telephone number, a key 132 for inputting a user's instruction, etc., and a voice signal corresponding to a user's voice. Generated microphone (MIC) 1
33, a speaker 134 for outputting a sound corresponding to the supplied sound signal, a light emitting diode (LED) 135 for displaying an operation state and the like, and a vibrator motor (hereinafter simply referred to as a motor) 136 used for an incoming call notification or the like. I have.

When "voice" is selected by the selection of the display mode by the processing selection unit 125, the speaker 134 is driven as a warning display, and when "image display" is selected, a warning is displayed. The display unit 131 is driven (via the CPU 121 and the display control unit 122) and “L”
If "ED" is selected, an LED will be displayed as a warning
135 is driven, and when "vibrator" is selected, the motor 136 is driven as a warning display.

FIG. 4 is a diagram showing a more detailed configuration of the radio base station 10, the small radio base station 20, the radio channel control station 40, and the path guidance service center 50 constituting the path guidance path guidance system.

The radio base station 10 includes an RF unit 11 for performing processing such as amplification and modulation / demodulation of a high-frequency signal, and a multiplexing / demultiplexing unit 12 for performing processing such as multiplexing and demultiplexing of baseband signals.
A terminal distance detection unit 13 that detects a distance between the mobile terminal device 30 and the wireless base station 10, and a communication interface (I / F) 14 that connects to the wireless network control station 40 are provided. The radio base station 10 is, for example, a frequency division multiplex (F
DMA: Frequency Division Multiple Access, TDMA: Time Division Multiple Acces
s), Code Division Multipl (CDMA)
e Access), frequency hopping spread spectrum (FH-SS: Spectrum Spread Frequency Hopping)
Communication with a plurality of portable terminal devices 30 can be performed at the same time by multiplexing or the like due to a difference in hopping patterns in communication.

As shown in the figure, the radio channel control station 40 includes a radio base station 10 used for communication with the portable terminal device 30.
A communication control unit 42 for controlling the operation of the switching unit 41, the terminal distance detecting unit 13 of each of the above-described radio base stations 10 communicates with a terminal position detecting unit 43, A gateway device (GW) 44 for performing protocol conversion with the network 60; a packet processing unit 45 for controlling transmission / reception of data (packets) of the path guidance service to the portable terminal apparatus 30;
A service processing unit 46 for executing a request for providing a route guidance service for the wireless base station 10 and a map data holding unit 47 for holding map data such as the position of each wireless base station 10.

Further, the small radio base station 20 has a communication interface (I
/ F) 21, an ID holding unit 22 for holding identification information (ID) unique to each small radio base station 20, a control unit 23 for controlling signal transmission and the like, and an amplifying unit for amplifying a high-frequency signal ( AMP) 24. The small wireless base station 20 can simultaneously communicate with a plurality of portable terminal devices 30 in the same manner as the wireless base station 10.

The aisle guidance service center 50 includes an exchange unit 51 for selecting the small radio base station 20 that provides the aisle guidance service to the portable terminal device 30, a communication control unit 52 for controlling the operation of the exchange unit 51, A map data holding unit 53 for holding map data such as the position of the wireless base station 20; an electric field data holding unit 54 for holding the distribution of electric field strength near each small wireless base station 20; It includes a detection unit 55, a determination unit 56 that determines a situation according to the emergency signal supplied to the emergency detection unit 55, and a service control unit 57 that controls provision of a path guidance service.

In the electric field data holding section 54, the distribution of electric field intensity near each small radio base station 20 is recorded. This distribution is obtained by simulation or actual measurement of the electric field strength formed near the small wireless base station 20 when any one of the small wireless base stations 20 transmits a signal.

FIG. 5 is a diagram showing an example of such an electric field intensity distribution. In an actual environment, a building or the like exists in a portion (hatched portion) other than the road, and the distribution of the actual electric field intensity is not a simple one as shown in FIG. Such a complicated distribution of the electric field strength is disclosed in, for example, Japanese Patent No. 3092651 or Japanese Patent No. 312651.
As disclosed in U.S. Patent No. 17626 and the like, it is possible to use information such as the shape of a building near the small radio base station 20 and consider the reflection when the signal from the small radio base station 20 is reflected. it can.

However, even when the electric field strength has such a complicated distribution, the electric field data holding section 54
The distribution of the electric field strength is stored in the
If the value is supplied to 0, the user can be guided to the destination. For this reason, in FIG. 5, the distribution of the electric field strength is simplified for the sake of explanation of the operation.

The transmission output of the radio base station 10 is as follows:
In consideration of the installation cost of the wireless base station 10 and the like, the output is set to an extent that can cover, for example, an area having a radius of about several kilometers.
On the other hand, the transmission output of the small radio base station 20 is, for example, a radius of 1 in consideration of the accuracy of guidance near the destination.
The output is such that it covers an area of about 00 m or less.

The radio base station 10 and the small radio base station 2
0 uses the same frequency band. For this reason, in order to avoid interference with the surrounding radio base station 10, the small radio base station 20 uses the frequency (for FDMA), the time slot (for TDMA), Channels such as a spreading code (in the case of CDMA) and a hopping pattern (in the case of FH-SS) are detected, and an available channel is used to provide a path guidance service to the portable terminal device 30.

For example, the communication controller 4 of the radio network controller 40
In 2, since the channel used by each radio base station 10 is known, the service processing unit 46 detects an available channel and notifies the service control unit 57 when requesting use of the path guidance service.

Further, even after the transmission of the signal from the small radio base station 20 is started, for example, the small radio base station 20 detects a vacant channel and executes processing for preventing interference such as movement to the vacant channel. .

As described above, if the frequency bands of the radio base station 10 and the small radio base station 20 are matched, it is not necessary to separately provide the RF processing unit 100 only for guidance to the destination. This can contribute to a reduction in the cost of the device 30.

Hereinafter, the operation of the path guidance system configured as described above will be described.

FIG. 6 is a sequence diagram showing an outline of the operation of the passage guidance system.

First, when the user operates the portable terminal device 30 to specify one of the destination points where the small radio base station 20 is installed and requests a path guidance, the CPU 121 indicates the request for the path guidance and the destination point. The data (path guidance request data) is transmitted to the path guidance service center 50 (step S1). The transmitted route guidance request data is
The data is relayed to the radio network controller 40 via the radio base station 10 (step S2), and the switching unit 41, the packet processing unit 45,
Passage guidance service center 5 via service processing unit 46
0 is supplied to the service control unit 57.

When the path control request data is supplied, the service control unit 57 transmits a response message indicating the ID of the small radio base station 20 corresponding to the destination point specified in the data (step S3). ), And instructs the small radio base station 20 to transmit a signal (step S4).
The response message is relayed by the wireless base station 10 and supplied to the mobile terminal device 30 (step S5), and the mobile terminal device 30 receives a signal from the small wireless base station 20 having the ID specified in the response message. It is in a state where it can be done.

On the other hand, when the transmission of the signal is instructed as described above, the small radio base station 20 starts transmitting the signal in response to the instruction (step S6), and the portable terminal device 30 which has received the signal transmits the signal. The guidance process for guiding the user of the terminal device 30 to the destination is started.

When the portable terminal device 30 reaches the destination, the portable terminal device 30 transmits a message indicating that the guidance process has been completed (step S7). This message is relayed by the radio base station 10 (step S
8), is supplied to the passage guidance service center 50. When this message is supplied, the service control unit 57 instructs the small radio base station 20 to stop signal transmission (step S9), and the small radio base station 20 stops signal transmission.

FIG. 7 is a flowchart showing the operation of the portable terminal device 30.

First, the CPU 121 includes the input control unit 123
Waits for an instruction to start the path guidance service from the user (step S11). When an instruction is input, the CPU 121
Notifies the passage guidance service center 50 of that effect (step S12), and the passage guidance service center 5
Wait for a response of 0.

When there is a response from the path guidance service center 50, the CPU 121 proceeds from step S13 to step S14, and performs a user guidance process according to a signal from the small radio base station 20 (steps S15 to S18).
To start.

In this guidance process, the service controller 57 is requested via the radio base station 10, the radio network controller 40, and the path guidance service center 50 for the electric field strength at the destination. In response to this request, the service control unit 57 acquires the electric field strength at the destination point where the small wireless base station 20 is installed, which is held in the electric field data holding unit 54.

The processing in step S15 is performed at a predetermined interval, for example, a predetermined time (Δt: for example, several seconds to three in the case of walking).
It is executed every 0 seconds or about 1 minute). In particular,
For example, the buffer 104 holds a detection output of the reception level detection unit 103 according to a clock (CLK) that becomes valid every Δt. The buffer 104 has an area A for holding the current detection output and an area B for holding the previously held detection output, and holds the detection output in the area A according to the clock (CLK). At this time, the detection output previously held in the area A is supplied to the area B. As a result, the area A holds the current detection output, and the area B holds the detection output before Δt.

The reception level detecting section 103 does not have to measure the electric field strength continuously, and may measure the electric field strength at predetermined intervals in synchronization with the above-mentioned clock, for example. Good. This can contribute to power saving. Alternatively, a movement detection unit such as a gyro sensor may be provided in the portable terminal device 30 so that the reception level detection unit 103 obtains the electric field strength every time the user moves a predetermined distance.

In step S16, the comparing section 105 compares the detection outputs held in the areas A and B to determine whether or not the electric field strength has decreased. According to the comparison result by the comparing unit 105, if the electric field strength has decreased, the process selecting unit 125 displays a warning to the user in step S17, and then returns to step S15. If the electric field intensity has not decreased, the process proceeds to step S18, where the processing selection unit 125 compares the detection output held in the area A of the buffer 104 with the electric field intensity at the above-mentioned destination, and reaches the destination. It is determined whether or not it has been performed.

If the vehicle has not reached the destination, the process returns to step S15, and the operations from step S16 onward are repeated.
25 notifies the CPU 121 of the fact,
Notifies the service control unit 57 that the guidance process has been completed (step S19). Further, the CPU 121 causes the display control unit 122 to display an image indicating that the destination has been reached. This allows the user to recognize that the vehicle has reached the destination.

The warning process in step S17 can be set in advance according to an instruction from the CPU 121 or the like. In response to this setting, the process selection unit 125 issues a warning to the user by a display on the display unit 131, a voice display by the speaker 134, a display by the LED 135, a vibration by the motor 136, or the like. Thus, for example, a warning when the user is away from the destination can be selected according to the user's preference or the user's ease of understanding.

Hereinafter, a process in which the user is guided to the destination by the above-described guidance processing will be described.

FIG. 8 shows a state in which the portable terminal device 30 is at a position P at which a signal from a position A, which is a destination, can be received. In FIG. 8, the coordinates of the position P are (X
1, Y1), the coordinates of the position A are indicated by (X2, Y3), and the coordinates of each block are indicated. FIG.
5 does not show an equal electric field strength curve showing the distribution of the electric field strength due to the signal from the small radio base station 20, but similarly to FIG. 5 described above, the electric field strength curve according to the distance from the position A as the destination point is shown. It is assumed that the distribution is

When using the guidance service using the position P in FIG. 8 as the departure point, the user first requests the service control unit 57 to use the service in the above-described procedure.
Thereafter, the user moves in an appropriate direction.

For example, when moving from the position P to the coordinates (X2, Y1), referring to FIG. 5 described above, the electric field strength increases in accordance with the movement. Therefore, the coordinates (X
(2, Y1), the above step S17 is not executed. Therefore, the user can recognize that the user is correct in the direction, and continue moving in the direction.

On the other hand, when moving from the position P in the direction opposite to the coordinates (X2, Y1), the electric field intensity decreases in accordance with the movement, so that the above-described step S17 is executed and a warning is displayed. . Accordingly, the user can recognize that the direction is wrong, and can stop moving in the direction and return to the position P.

If the movement in the direction is continued after the coordinates (X2, Y1) have been reached from the position P, the electric field intensity decreases. Therefore, a warning is displayed in step S17 described above, and the user can recognize that the vehicle has gone too far, and can return to the coordinates (X2, Y1).

After that, the user may input the coordinates (X2, Y
By moving in the direction 2) or in the opposite direction, it can be recognized that the direction toward the coordinates (X2, Y2) is correct. If the movement is continued in the same direction even after the coordinates (X2, Y2) are reached, the position A of the coordinates (X2, Y3) is reached. When the position A is reached, the electric field intensity becomes the intensity of the destination, and the image indicating that the destination has been reached is displayed on the display unit 131 as described above. The user can recognize that the user has arrived at position A, which is the destination point, by looking at this image.

As described above, in this path guidance system, when the electric field strength of the signal from the small radio base station 20 detected at predetermined intervals decreases, a warning is displayed to allow the user to communicate with the small radio base station. The station can be guided to the destination point where the station 20 is installed. Since the user can request the use of the passage guidance service and change the moving direction appropriately in response to the warning, the user can reach the destination point, and thus the user can be easily and reliably guided to the destination point.

By the way, in this path guidance system, the portable terminal device 30 is changed according to the position of the portable terminal device 30 detected by the terminal position detecting section 43 of the radio network controller 40.
A map of the neighborhood can also be provided.

As described above, since the output of the small radio base station 20 is smaller than that of the radio base station 10, the signal from the small radio base station 20 may not be received depending on the position of the portable terminal device 30. . In such a case, it is possible to provide map information indicating a route from the current position of the mobile terminal device 30 to the destination position.

When the user operates the key 132 to input a destination and requests map information near the current position, the request is supplied to the CPU 46 via the CPU 121, the data processing unit 113, the packet processing unit 45, and the like. . Service processing unit 4
6, when such a request is received, the area including the current position of the mobile terminal device 30 and the destination point according to the position of the mobile terminal device 30 detected by the terminal position detection unit 43 and the designated destination point. Map data storage unit 4
7 and transmitted to the portable terminal device 30.
This map data is supplied to the portable terminal device 30 via the packet processing unit 45, the switching unit 41, the wireless base station 10, and the like.

When the map data is supplied in this manner, the data is supplied to the CPU 121 via the data processing unit 113 and the like.
Supplied to In the CPU 121, for example, a program for displaying an image on the display unit 131 such as a Web browser is executed, and when map data is supplied, an image corresponding to the map data is displayed on the display unit 131.

FIG. 9 shows an example of an image displayed in this manner. In this image, for example, the portable terminal device 30
61 showing a map including the current position and the destination point, an image 62 showing the destination point ("X"), an image 63 showing the current position ("O"), and the mobile terminal before a predetermined interval (for example, one minute). An image 64 (“+”) indicating the position of the device 30 and images 65 and 66 indicating the target to the destination are included.

The position of the portable terminal device 30 before a predetermined interval (for example, one minute) is detected by holding a history of the position detected by the terminal position detecting unit 43, for example.
By maintaining such a history, the movement trajectory of the mobile terminal device 30 can be detected. Therefore, information indicating the trajectory is supplied to the mobile terminal device 30 and displayed on the display unit 131. You may.

As described above, the image corresponding to the current position of the portable terminal device 30 and the map data near the destination is displayed so that the user at the position where the signal of the small radio base station 20 cannot be received can reach the vicinity of the destination. Can be shown. The user who sees such an image can easily reach near the destination. When reaching the vicinity of the destination, a signal from the small radio base station 20 can be received, and the user can be guided to the destination as described above.

Particularly, in an area where the number of small radio base stations 20 is small, such as a suburb, the user can be guided to a position where a signal from the small radio base station 20 can be received. The area where the guidance service is provided can be expanded.

Instead of displaying the image corresponding to the map data as described above, the route to the destination may be indicated by voice. In this case, several patterns of audio data are stored according to the current position of the mobile terminal device 30, and the corresponding audio data is stored in the mobile terminal device 30 according to the position of the mobile terminal device 30 detected by the terminal position detection unit 43. Supply to device 30.

The voice data is, for example, the voice CO
The signal is converted into an audio signal by the DEC 114 and
24, and supplied from the selector 124 to the speaker 134 under the control of the CPU 121. Thereby, the sound corresponding to the sound data, that is, the sound indicating the route to the destination is reproduced. The user who has heard this can easily reach the destination point.

Instead of supplying the audio data, the position of the portable terminal device 30 detected by the terminal position detecting section 43 is supplied to the operator of the radio network controller 40 and the like.
The route may be guided by a telephone call with the operator and guided to a position where a signal from the small wireless base station 20 can be received.

As described above, by guiding the route to the destination by voice and performing guidance, the user can easily reach a position near the destination where a signal of the small radio base station 20 can be received. .

By the way, the above-mentioned small radio base station 20
For example, as shown in FIG. 10 or FIG. 11, it can be provided near a building such as a hotel, or near an emergency exit such as an underground passage. Thus, the small radio base station 20 is located near the emergency exit.
Is provided, the user can be easily and reliably guided to the emergency exit.

When the small radio base station 20 is provided near an emergency exit of a building such as a hotel, for example, as shown in FIG. 10, sensors 71 ₁ and 71 ₁ for detecting an abnormality such as a fire due to temperature, smoke, etc. for each room. 71 _{2, 71} 3, ₇₁ 4, a ... provided, these sensors _{71 1,} 71 2, ₇₁ 3, 7
1 _4, the emergency signal according to the detection output of ... providing the monitoring unit 72 supplies the very detection unit 55 described above.

[0074] In the case shown in FIG. 10, in addition to providing a small radio base station 20 ₁ in the vicinity of the emergency exit 73 is provided with a small radio base station 20 ₂ to the vicinity of digestion equipment such as fire extinguishers 74. These small radio base station 20 _1, 20 _2, and is able to instruct the interruption of the emergency to each mobile terminal device 30. Correspondingly, each mobile terminal device 3
0 is configured to execute an emergency interrupt.

The emergency signal from the monitoring unit 72 is supplied to the judgment unit 56 via the emergency detection unit 55. Judgment unit 56
Determines whether the fire is a small-scale fire or a fire requiring evacuation based on the supplied emergency signal, and notifies the user of the emergency exit 7
Then, it is determined whether to guide to the fire extinguisher 74 or to extinguish the fire.

FIG. 12 is a sequence diagram showing the operation of the above-described passage guide system in an emergency.

An abnormality such as a fire is detected by a sensor 71 in each room.₁, 7
1₂, 71₃, 71₄,... Are detected, the judgment unit 5
6 is a non-controller supplied in accordance with the detection outputs of these sensors.
Recognize abnormalities according to the normal signal (step S21) and guide
It is determined whether or not it is necessary. When guidance is necessary
In the meantime, the judgment unit 56 sends the user a small wireless base near the emergency exit.
Local office 20₁Or a small radio base near digestive facilities
Station small radio base station 20 ₂Select whether to lead to
The emergency signal to the small wireless base station 20
An instruction is given (step S22). Signal transmission was instructed
The small radio base station 20 starts transmitting an emergency signal.
(Step S23).

Upon receiving such an emergency signal, for example, the data processing unit 113 requests an interrupt to the CPU 121. In response, the CPU 121 instructs the processing selection unit 125 to display an emergency. The emergency display includes, for example, generation of a warning sound by the speaker 134,
Display by the display unit 131 and the LED 135 can be performed. This allows the user to recognize the occurrence of an emergency situation. Furthermore, if the mobile terminal device 30 is a device such as a mobile phone that the user usually carries, the user can easily know that an emergency has occurred.

After performing such an emergency display, the CP
U121 starts the operation of the reception level detection unit 103, the comparison unit 105, and the like, and executes the same guidance processing as described above.

As a result, the same guide processing as described above is executed, and the user is guided to the emergency exit or the digestion facility.

As described above, in the passage guidance system according to this embodiment, since the small radio base station 20 is provided near the emergency exit or the like, the user can be easily and reliably guided to the emergency exit or the like.

Further, in this path guidance system, since the small radio base station 20 is configured to be able to request an interrupt from the portable terminal device 30, it is in a range where a signal from the small radio base station 20 can be received. It is possible to notify the user of the portable terminal device 30 of an emergency. Furthermore, by starting the guidance process for guiding the user of the portable terminal device 30 to the small wireless base station 20 by this interruption, the user can be reliably guided to an emergency exit or the like in an emergency.

In the above description, the case where the portable terminal device 30 that can be used for the communication service and the passage guidance service is used has been described. It is not necessary to provide the function for using the communication service in 30.
Thereby, the cost of the portable terminal device 30 can be reduced, and the cost related to providing the passage guidance service can be reduced.

In the above description, the small radio base station 2
Although the path guidance is performed using only the electric field strength of the signal from 0, the phase of the signal from the small wireless base station 20 may be further considered. By considering the phase of the signal in addition to the electric field strength distribution, the distance from the small wireless base station 20 can be grasped more accurately. For example, the wavelength of an 800 MHz signal used in a digital mobile phone is about 0.3 m,
And synchronization between the mobile terminal device 30 and the like.
By performing the guidance in consideration of the phase of the signal from the small radio base station 20, highly accurate guidance can be performed.

[0085]

According to the present invention, the notifying means of the guided terminal device changes the electric field strength of the guided radio wave measured by the strength measuring means with respect to the destination in accordance with the time change accompanying the movement of the guided terminal device. Information about the direction to go. The user can recognize the direction to be traveled by this notification, and can easily reach the destination by moving in the recognized direction. Therefore, according to the present invention, the user can be easily guided to the destination.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of a passage guidance system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of the passage guidance system.

FIG. 3 is a block diagram showing a configuration of a portable terminal device constituting the passage guidance system.

FIG. 4 is a block diagram showing a configuration of a radio network controller and a path guidance service center which constitute the path guidance system.

FIG. 5 is a diagram showing a distribution of electric field intensity by a small radio base station in the path guidance system.

FIG. 6 is a sequence diagram showing an outline of an operation of the passage guidance system.

FIG. 7 is a flowchart showing an operation of the portable terminal device in a guidance process by the passage guidance system.

FIG. 8 is a diagram showing a user guidance process by the guidance process.

FIG. 9 is a diagram illustrating an example of an image displayed on a display unit of the mobile terminal device.

FIG. 10 is a diagram illustrating another installation example of the small radio base station.

FIG. 11 is a perspective view showing another example of installation of a small radio base station.

FIG. 12 is a sequence diagram showing an operation of the passage guidance system in an emergency.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Radio base station, 13 ... Terminal distance detection part, 20 ... Small radio base station, 23 ... Control part, 24 ... AMP, 30 ... Portable terminal apparatus, 103 ... Reception level detection part, 104 ... Buffer, 105 ... Comparison part , 120: UI processing unit, 125: processing selection unit, 131: display unit, 134: speaker, 135
... LED, 136 ... Motor, 40 ... Wireless network control station, 4
3: terminal position detection unit, 46: service processing unit, 47: map data holding unit, 50: passage guidance service center, 54
... Electric field data holding unit, 57 ... Service control unit

Claims (8)

[Claims] 1. A guidance system for guiding a guided terminal device to a destination based on a guided wave generated by a guided wave generating means provided at a destination point, wherein the guided terminal device comprises: An intensity measuring means for measuring the electric field intensity of the induced radio wave from the generating means, and the electric field intensity of the induced radio wave measured by the intensity measuring means is set at the destination according to a time change accompanying the movement of the guided terminal device. And a notifying means for notifying information on a direction to travel to. 2. A carrier equipment having a function of providing a cellular mobile communication service, detecting a position of a guided terminal device, and supplying map information corresponding to the detected position to the guided terminal device. And a guidance system for guiding the guided terminal device to the destination based on the guided radio wave generated by the guided radio wave generating means provided at the destination point, wherein the guided terminal device is provided from the guided radio wave generating means. An intensity measuring means for measuring the electric field intensity of the induced radio wave, and the electric field intensity of the induced radio wave measured by the intensity measuring means proceeds to the destination according to a time change accompanying the movement of the guided terminal device. An informing means for informing information about a power direction; and a map information supplied from the carrier equipment when no guided radio wave from the guided radio wave generating means at a destination point can be received. Guidance system, characterized in that it comprises display means that, the. 3. The guidance system according to claim 1, wherein the notifying unit determines that the moving direction is wrong when the time change of the electric field strength indicates a decrease in the electric field strength. A guidance system characterized by notifying the user. 4. The guidance system according to claim 1, wherein the guidance radio wave generating unit is provided at a place where the guided terminal device is to be forcibly guided. A featured guidance system. 5. The guidance system according to claim 4, wherein the guided radio wave generating means generates an interrupt request signal for forcibly receiving the guided radio wave generated by the guided terminal device. A guidance system comprising: 6. An intensity measuring means for measuring an electric field intensity of an induced electric wave generated by an induced electric wave generating means provided at a destination, and an electric field intensity of the induced electric wave measured by the intensity measuring means for the guided terminal device. And a notifying means for notifying information on a direction to go to the destination according to a time change accompanying the movement. 7. An intensity measuring means for measuring an electric field intensity of an induced electric wave generated by an induced electric wave generating means provided at a destination, and an electric field intensity of the induced electric wave measured by the intensity measuring means for the guided terminal device. A notifying unit for notifying information on a direction to be traveled to the destination according to a time change accompanying the movement; and a mobile communication service of a cellular system when a guided radio wave from the guided radio wave generating unit cannot be received. Display means for displaying map information corresponding to the position of the guided terminal device supplied from the provided carrier equipment, and a guided terminal device. 8. The guided terminal device according to claim 6, wherein the notifying unit determines that the moving direction is wrong when the time change of the electric field intensity indicates a decrease in the electric field intensity. A guided terminal device for notifying that there is something.