JPH0847041A - Local area mobile object find-out system adn its transmitter - Google Patents

Abstract

PURPOSE:To provide the local area mobile object find-out system in which and existing area of a mobile object within a limited premises or building is being narrowed suit ably. CONSTITUTION:Transmitters 11-15 are carried by infants moving in a recreation ground PK. Three reception stations 11-15 or over are arranged distributedly in the recreation ground and its peripheral parts. Two or over terminal equipments 41-43 are arranged distributedly in the recreation ground. The reception stations 11-15, the terminal equipments 41-43 and an information processor 30 are connected to make data communication. The reception stations 11-15 receive a radio wave emitted from transmitters 21-23 and measure the reception strength of the wave and send the result to the information processor 30. When an ID card is inserted to any of the terminal equipement 41-43, the recorded transmitter ID code is sent from the terminal equipments 41-43 to the information processor 30 and the information processor 30 narrows the resident area of the infant carrying the transmitter based on the reception strength of the radio wave emitted by the transmitter corresponding to the transmitter ID code and informs the terminal equipment of the result. The terminal equipement illustrates the resident area of the infant graphically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a local area mobile object detection system and transmitter. More specifically, a moving body that moves within a limited site or building (local area) such as an amusement park, a racetrack, a ski resort, a safari park, a department store, a concert hall, a museum, a library, a video library, a record store (active The present invention relates to a local area moving object detection system for detecting the existence area of a moving object and a transmitter used in the system.

[0002]

2. Description of the Related Art Conventionally, a directional antenna receives radio waves transmitted from a transmitter attached to a moving body to detect the direction of the moving body, and this is performed at at least two places to detect a plurality of detected directions. A moving body position finding system is known which estimates the vicinity of an intersection as a region where the moving body exists. Also,
In Japanese Patent Laid-Open No. 1-278134, a large number of infrared transmitting stations are installed in a distributed manner in a local area, position information is transmitted by infrared from each infrared transmitting station, and an infrared receiver and a radio wave transmitter are attached to a moving body. When a moving body passes near an infrared transmitting station, infrared rays are received and position information is stored, the position information is transmitted by a radio wave transmitter, and this is received by a management center. There is disclosed a mobile body position finding system which takes out the position information of the infrared transmitting station which has passed through and makes it the existing position of the mobile body.

[0003]

In the system for detecting the direction of a moving body by using the directional antenna, there is a problem that the structure for scanning the local area with the directional antenna becomes complicated. That is, there is a problem that a mechanism for rotating the directional antenna, a switching circuit for electronic scanning, or a phased array antenna is required. On the other hand, Japanese Patent Laid-Open No. 1-27813
The system disclosed in Japanese Patent Publication No. 4 has a problem in that the infrared receiver needs to be exposed to the outside in order to receive infrared rays, and the application is limited. For example, there is a problem that it cannot be applied to the lost child detection system because the position cannot be found when an infant grasps the infrared receiver.
Therefore, an object of the present invention is to provide a local area moving body detection system and a transmitter which have a simple configuration and can be applied to a lost child detection system.

[0004]

According to a first aspect of the present invention, the present invention relates to three or more receiving stations (11 to 15) distributed in or around a local area (PK) and the local area ( Based on the transmitters (21 to 23) held by the moving body moving in the PK) and the reception intensity of the radio waves radiated from the transmitters (21 to 23) at each of the receiving stations (11 to 15). There is provided a local area moving body discovering system comprising: an information processing device (30) for narrowing down a region where a moving body exists.

According to a second aspect, the present invention provides a transmitter I in the local area mobile object discovery system having the above-mentioned configuration.
A calling radio wave transmitter that transmits a calling radio wave including a D code (1
10), wherein the transmitters (21-23) are
Provided is a local area moving object detection system comprising a calling radio wave receiver (213) for receiving the calling radio wave, and radiating the radio wave only when receiving a calling radio wave including its own transmitter ID code. .

According to a third aspect of the present invention, in the local area moving object discovery system having the above structure, the transmitter (21 ') emits a radio wave including a transmitter ID code,
Each receiving station (11 ') provides a local area mobile object detection system characterized by detecting a reception intensity for each transmitter ID code.

In a fourth aspect, the present invention provides a transmitter I in the local area mobile object discovery system having the above-mentioned configuration.
An ID card (51) on which a D code is recorded, an ID card reader (411), and a presence area notification device (413)
One or more terminals (4
1 to 43), and the information processing device (3
0) receives the transmitter ID code read by the ID card reader (411) of the terminal (41 to 43), narrows down the existing area of the transmitter corresponding to the transmitter ID code, and sets the existing area to the terminal (41 to 41). There is provided a local area moving body discovering system characterized by notifying from the presence area notifying device (413) of 43).

According to a fifth aspect of the present invention, in the local area moving body discovery system having the above-mentioned structure, the two receiving stations are used as the information processing device (30) based on the ratio of the receiving intensities of the two receiving stations. A curve (circle or straight line) in which the ratio of distances from is constant is calculated, this is performed by changing the combination of receiving stations, a plurality of curves (C14 to C45) are calculated, and the plurality of curves (C14 to C45) are calculated. The local area moving body discovery system is provided by using the local area where the intersections of (1) are dense as the existing area (A) of the moving body.

According to a sixth aspect of the present invention, in the local area moving body locating system having the above structure, the information processing apparatus calculates a reception intensity distribution (DC) from the position and the reception intensity of each receiving station, Received intensity distribution (D
(C) provides a local area moving object discovery system using a local area projecting from a predetermined threshold reception intensity as a moving object existing area.

According to a seventh aspect of the present invention, in the local area moving body discovering system having the above-mentioned configuration, the information processing apparatus receives the reception intensity of each receiving station as an input, and a plurality of predetermined existing area candidates (A1). ~ A5) a neurocomputer (301n) that outputs an existence probability index for each
Provide a local area mobile object discovery system using.

According to an eighth aspect of the present invention, in the local area moving body locating system having the above structure, the information processing device (301f) determines the existence of a moving body based on the position and reception intensity of each receiving station and a fuzzy rule. A local area moving object detection system using area estimation is provided.

[0012] In a ninth aspect, the present invention is a transmitter used in the local area moving body locating system having the above structure, which includes a hat, an armband, a badge, a brooch (21B),
(EN) Provided is a transmitter characterized in that a mobile body such as a pendant is incorporated in a wearable article.

According to a tenth aspect, the present invention is a transmitter used in the local area moving body locating system having the above structure, which is attached, pinched or attached to a moving body such as a card, a sheet or a patch. Provided is a transmitter characterized by being incorporated in a thin medium.

[0014]

In the local area moving body detection system (1) according to the first aspect, the electric waves emitted from the transmitters (21 to 23) are locally held by the moving body moving in the local area (PK). Three or more receiving stations (11 to 1) distributed in and around the area (PK)
5), and narrows the region where the moving body exists based on the reception intensity at each receiving station (11 to 15). Therefore, since the directional antenna is not used, the configuration becomes simple. Moreover, since it does not use an infrared transceiver, it can be applied to a lost child detection system.

In the local area moving object detection system according to the second aspect, when a calling radio wave including a transmitter ID code is transmitted from the calling radio wave transmitter (110), only the transmitter corresponding to the transmitter ID code receives the radio wave. Radiates.
For this reason, if the plurality of moving bodies respectively hold transmitters having different transmitter ID codes, it is possible to narrow down the existing area of only the desired moving body.

In the local area moving object detection system according to the third aspect, the transmitter radiates a radio wave including the transmitter ID code, and each receiving station detects the reception intensity for each transmitter ID code. For this reason, if a plurality of moving bodies hold transmitters having different transmitter ID codes, it is possible to identify each moving body and narrow down the existing area.

In the local area moving object detection system according to the fourth aspect, the ID in which the transmitter ID code is recorded is recorded.
The card (51) is issued and the ID card reader (41
1) and the terminals (41 to 43) having the presence area notification device (413) are arranged in the local area (PK). The information processing device (30) then uses the terminal (41
To 43) receives the transmitter ID code read by the ID card reader (411), narrows down the existence area of the transmitter corresponding thereto, and determines the existence area as the terminal (41).
To 43) of the existence area notification device (413).
For this reason, for example, if the infant carries the transmitter (21-23) and the guardian carries the ID card (51), when the infant gets lost, the guardian takes the nearest terminal (41-41).
By inserting the ID card (51) into 43), it becomes possible to immediately know the existence area of the infant.

In the local area moving object detection system according to the fifth aspect, the information processing device (30) makes the ratio of the distances from the two receiving stations constant based on the ratio of the receiving intensities of the two receiving stations. Calculate the curve (circle or straight line)
This is performed by changing the combination of receiving stations, and a plurality of curves (C1
4 to C45) and calculate a plurality of curves (C14 to C14).
A local area where the intersections of 45) are dense is defined as a moving object existing area (A). According to this, even if the installation density of the receiving stations is low, it is possible to improve the resolution of the region where the moving body exists.

In the local area moving object detection system according to the sixth aspect, the information processing device calculates the reception intensity distribution (DC) from the position and the reception intensity of each receiving station, and the reception intensity distribution (DC) is predetermined. The local area protruding from the threshold reception intensity of is the moving object existing area. According to this, the existence area of the moving body can be directly calculated.

In the local area moving body discovery system according to the seventh aspect, as an information processing device, the reception intensity of each receiving station is input, and the existence probability index for each of a plurality of predetermined existence area candidates (A1 to A5) is set. The neuro computer (301n) which outputs is used. According to this,
Even if humans do not devise an algorithm, if the learning period is given, it becomes possible to estimate the existence area of the moving body.

In the local area moving body discovering system according to the eighth aspect, as the information processing device, a device (301f) for estimating the existence region of the moving body from the position and reception intensity of each receiving station and the fuzzy rule is used. According to this, even if there is fluctuation in the reception intensity, it becomes possible to estimate the existence region of the moving body with considerable reliability.

The transmitter according to the ninth aspect is incorporated in a moving object such as a hat, armband, badge, brooch (21B), and pendant. Therefore, for example, an infant can be surely carried without being aware of it.

The transmitter according to the tenth aspect is incorporated in a thin medium which is attached, sandwiched or attached to a moving body such as a card, a sheet or a patch. Therefore, it can be attached, for example, to a book or a video cassette without disturbing it.

[0024]

The present invention will be described in more detail with reference to the embodiments shown in the drawings. The present invention is not limited to this. First Embodiment FIG. 1 is an overall configuration diagram of a lost child detection system which is an embodiment of the local area moving body detection system of the present invention. The lost child detection system 1 is a system for finding the whereabouts of a lost child in an amusement park PK, and is provided by the receiving stations 11 to 11.
15, the transmitters 21 to 23, the information processing device 30, and the terminals 41 to 43. The receiving stations 11 to 15
The information processing device 30 and the terminals 41 to 43 can communicate with each other by wire or wirelessly.

The receiving stations 11 to 15 are distributed and arranged in the amusement park PK and around the amusement park PK. If the receiving station is installed only in the amusement park PK, depending on the site shape of the amusement park PK, there are places where it is difficult to find the whereabouts of the lost child. Therefore, in order to avoid this, a receiving station is also installed around the amusement park PK. As shown in FIG. 2, the receiving station 11 receives a call radio wave transmitter 110 that emits a call radio wave including a transmitter ID code and a radio wave radiated from the transmitters 21 to 23 to measure a reception intensity. Receiver 111, which receives the transmitter ID code sent from the information processing device 30, transmits a calling radio wave including the transmitter ID code from the calling radio wave transmission station 110, and receives the reception radio wave measured by the receiver 111. The data communication device 112 for transmitting the intensity to the information processing device 30.
The other receiving stations 12 to 15 have the same configuration.

The transmitters 21 to 23 are distributed to the respective infants who enter the amusement park PK, and each infant holds the transmitters 21 to 23.
Move in K respectively. It may be distributed only if the parent wishes. As shown in (a) of FIG. 3, the transmitter 21 receives a calling radio wave including a transmitter ID code, and when the received calling radio wave includes its own transmitter ID code, a predetermined time (for example, 30 seconds). ) A ringing radio wave receiver 213 that outputs a start signal only, and a transmitter body 211 that emits a radio wave only while the start signal is output.
And a battery 212. Other transmitters 22-2
3 has the same configuration. As shown in FIG. 3B, the transmitter 21 is built in the brooch 21B. The brooch 21B has an animal head-shaped design portion 21c and a stopper 21d for stopping the clothes on an infant.
The other transmitters 22 to 23 have the same configuration, but may be incorporated in not only a brooch but also a wearable item such as a hat, armband, badge, or pendant. Further, it may be built in a thin medium such as a card, a sheet, a patch, which is attached, sandwiched or attached.

As shown in FIG. 4, the information processing device 30
Is a data communication device 302 that performs data communication with the receiving stations 11 to 15 and the terminals 41 to 43, and the terminals 41 to 4
3 to receive the transmitter ID code sent from any one of 3 and to transfer the transmitter ID code to the receiving stations 11 to 15 and to receive the receiving intensity sent from the receiving stations 11 to 15 A computer 301 which narrows down the existing area of the transmitter and sends the existing area to the terminal which has sent the transmitter ID code.

The terminals 41 to 43 are dispersedly arranged in the center of the amusement park PK and in the vicinity of the gates G1 and G2. As shown in FIG. 5, the terminal 41 includes a data communication device 412 that performs data communication with the information processing device 30,
An ID card reading device 411 that reads a transmitter ID code stored in an ID card (51 in FIG. 6) described later and sends it to the information processing device 30 and an existing area sent from the information processing device 30 are received. And a display device 413 for graphically displaying on the screen. The other terminals 42 and 43 have the same configuration.

FIG. 6 shows an ID card 51 which is distributed to a guardian of the infant when the transmitter 21 is distributed to the infant.
Is. On the ID card 51, the transmitter ID code of the transmitter 21 is recorded in the magnetic recording unit 511. Similar ID cards are also distributed when the other transmitters 22 and 23 are distributed. In addition, the transmitter ID code may be recorded by a punch hole or a bar code. Further, the ID card according to the present invention may be realized as the function of the IC card.

Next, the operation will be described. When the infant and his / her guardian enter the amusement park PK, the brooch 21B and the ID card 51 are distributed from the manager of the amusement park PK to the guardian.
Therefore, the guardian holds the ID card 51 and
Attach the brooch 21B to the infant's clothes. When the infant gets lost, the guardian goes to a nearby terminal such as the terminal 41 and inserts the ID card 51.

Then, the ID card reader 4 of the terminal 41
11 reads the transmitter ID code of the transmitter 21 from the ID card 51 and sends it to the information processing device 30. The information processing device 30, which has received the transmitter ID code, transmits the transmitter ID.
The code is transferred to all receiving stations 11-15. All the receiving stations 11 to 15 that have received the transmitter ID code transmit the calling radio wave including the transmitter ID code of the transmitter 21 to the calling radio wave transmitter 11
Send from 0. When the transmitter 21 receives a calling radio wave including its own transmitter ID code, the transmitter 21 emits the radio wave. Upon receiving the radio waves radiated from the transmitter 21, each of the receiving stations 11 to 15 sends the reception intensity to the information processing device 30.

In the information processing device 30 having received the reception strengths at the respective reception stations 11 to 15, the computer 301 selects the three reception stations having the highest reception strength. It is assumed that the three receiving stations are the receiving stations 11, 14, and 15 and the ratios of the respective receiving intensities are (4), (1), and (1) as shown in FIG. In the computer 301, the ratio of the distances from the receiving stations 11 and 14 is the ratio of the reciprocal of the square root of the reception intensity (that is, 1 :).
The circle C14 that is 2) is calculated. Also, the receiving stations 11 and 1
A circle C15 is calculated such that the ratio of the distance from 5 and the ratio of the reciprocal of the square root of the reception intensity (that is, 1: 2). Further, a straight line C45 in which the ratio of the distances from the receiving stations 14 and 15 is the ratio of the reciprocal of the square root of the reception intensity (that is, 1: 1) is calculated. Next, the computer 301 uses the circles C14, C15, and the straight line C.
The points α1 and α2 at which 45 intersections are dense are obtained.
Next, the computer 301 compares the reception intensity (4) at the receiving station 11 closest to the point α1 with the reception intensity (0.3) at the receiving station 13 closest to the point α2, and determines the point with the larger reception intensity. α1 is selected, a circular area having a predetermined size is set in the vicinity of α1, and the area is determined as the existing area A. Next, the computer 301 sets the existence area A to the terminal 4
Send to 1.

The terminal 41 which has received the existence area A displays the map of the amusement park PK showing the existence area A in a graphic form, and the message "the child you are looking for is in the area surrounded by a circle". Is displayed (you may guide by voice). In addition to or in place of the display device 413, a printer may be installed and the map indicating the existing area A may be printed out from the printer. When the guardian knows the existence area A, the guardian uses the ID card 5 from the terminal 41.
All you have to do is to remove 1 and go to the existing area A to search for an infant.

According to the lost child detection system 1 described above, the guardian can quickly find the lost child. For this reason, the loss time is less than when the manager of the amusement park PK just waits for the lost child to be found. The lost child detection system 1 is useful not only when searching for a lost child but also when a lost friend is searched for.

As a modification of the first embodiment, all receiving stations 11
~ 15 does not transmit the calling radio wave including the transmitter ID code all at once, but by utilizing the fact that the receiving stations 11 to 15 are dispersed, the amusement park PK is divided into several sections in order. An example is one in which the calling radio wave is transmitted only from some of the selected receiving stations while changing the receiving stations to be selected for scanning. In addition, the call radio wave transmission station is not installed in all the receiving stations 11 to 15, but the call radio wave transmission station is installed in a part or only one of them.

-Second Embodiment- The first embodiment described above is a system for calling only a desired transmitter by a calling radio wave. On the other hand, the second embodiment is a system in which each transmitter radiates a radio wave including a transmitter ID code without using a ringing radio wave, and each receiving station detects the reception intensity for each transmitter ID code. is there.

As shown in FIG. 8, in addition to the receiver 111 and the data communication device 112, the receiving station 11 'includes a transmitter I.
A D extraction device 113 is provided. This transmitter ID extraction device 113 uses the transmitter ID from the radio wave received by the receiver 111.
The code is extracted, and the transmitter ID code is sent to the information processing device 30 'in association with the reception sensitivity. As shown in FIG. 9, the transmitter 21 ′, instead of the ringing radio receiver 213,
It has a transmitter ID incorporation device 214. This transmitter I
The D incorporation device 214 incorporates the transmitter ID code into the radio wave emitted from the transmitter body 211 ′. The battery 21
In order to suppress the consumption of 2, the transmitter main body 211 ′ radiates a radio wave for a short time (for example, 3 seconds) every predetermined time (for example, 15 seconds). As shown in FIG. 10, the information processing device 3
0'does not have the ringing radio wave transmitter 303. The computer 301 'distinguishes the reception intensity for each transmitter ID code,
Narrow existing areas.

-Third Embodiment-The third embodiment is different from the above-mentioned embodiments in the method of determining the existence area in the information processing devices 30 and 30 '. That is, as shown in FIG. 11, assuming a space having coordinates of position and reception intensity, plotting the position and reception intensity of each receiving station in the space, calculating the reception intensity distribution DC, and receiving the reception A local area where the intensity distribution DC is higher than a predetermined threshold reception intensity is defined as a region where the moving body exists. The above space is a two-dimensional space if the position is one-dimensional, but is a three-dimensional space if the position is two-dimensional, and a four-dimensional space if the position is three-dimensional.

-Fourth Embodiment-The fourth embodiment is different from the above-mentioned embodiments in the method of determining the existence area in the information processing devices 30 and 30 '. That is, as shown in FIG. 12, a plurality of existing area candidates A1 to A5 are associated with the position of each receiving station in the local area PK.
Set. In addition, as shown in FIG.
15 to 15 as input, the existence area candidates A1 to
A neurocomputer 301n that outputs the existence probability index at A5 is used. If the neurocomputer 301n learns for a certain period, the existing area candidates A1 to A5
You will be able to select a region with a high probability of existence of a moving object.

-Fifth Embodiment- The fifth embodiment is different from the above-mentioned embodiments in the method of determining the existence area in the information processing devices 30 and 30 '. That is, as shown in FIG. 14, a fuzzy computer 301f having fuzzy rules is used. The fuzzy computer 301f applies the fuzzy rule to the input of the position and the reception intensity of each receiving station to estimate the existence area of the moving body.

[0041]

According to the local area moving body discovering system and the transmitter of the present invention, it is possible to suitably narrow down the existing area of the moving body within a limited site or building. Further, since the directional antenna is not used, the structure is simple. Furthermore, because we do not use infrared transceivers,
It can also be applied to the lost child detection system.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a lost child detection system according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a receiving station according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a transmitter according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram of an information processing apparatus according to the first embodiment of the present invention.

FIG. 5 is a configuration diagram of a terminal according to the first embodiment of the present invention.

FIG. 6 is a configuration diagram of an ID card according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram of an existing area determination method according to the first embodiment of this invention.

FIG. 8 is a configuration diagram of a receiving station according to a second embodiment of the present invention.

FIG. 9 is a configuration diagram of a transmitter according to a second embodiment of the present invention.

FIG. 10 is a configuration diagram of an information processing apparatus according to a second embodiment of the present invention.

FIG. 11 is an explanatory diagram of a method of determining an existing area according to the third embodiment of this invention.

FIG. 12 is an explanatory diagram of existing area candidates according to the fourth embodiment of the present invention.

FIG. 13 is an explanatory diagram of an information processing apparatus according to a fourth embodiment of this invention.

FIG. 14 is an explanatory diagram of an information processing apparatus according to a fifth embodiment of the present invention.

[Explanation of symbols]

 1 Lost Child Detection System 11-15 Receiving Station 21-23 Transmitter 30 Information Processing Device 41-43 Terminal 51 ID Card 21B Brooch 213 Call Radio Receiver 301 Computer 301n Neurocomputer 301f Fuzzy Computer 110 Call Radio Transmitter 411 ID Card Reader 413 Display device 511 Magnetic recording unit DC reception intensity distribution PK Amusement park G1, G2 Gates A1 to A5 Presence area candidates

Claims (10)

[Claims] 1. Three or more receiving stations (11 to 15) distributed in and around a limited site or building (hereinafter referred to as local area) (PK) and the local area (PK). Presence of the moving body based on the transmitters (21-23) held by the moving moving body and the reception strength of the radio waves radiated from the transmitters (21-23) at the receiving stations (11-15). A local area moving body discovery system, comprising: an information processing device (30) for narrowing down a region. 2. The local area mobile object detection system according to claim 1, further comprising a calling radio wave transmitter (110) for transmitting a calling radio wave including a transmitter ID code, and the transmitters (21-23). Is a local area moving object discovery system, comprising a calling radio wave receiver (213) for receiving the calling radio wave, and radiating the radio wave only when receiving a calling radio wave including its own transmitter ID code. 3. The local area mobile object detection system according to claim 1, wherein the transmitter (21 ′) emits a radio wave including a transmitter ID code, and each receiving station (11 ′) has the transmitter ID. A local area mobile object detection system characterized by detecting reception strength for each code. 4. The local area moving object discovery system according to claim 2 or 3, wherein an ID card (51) having a transmitter ID code recorded therein, an ID card reader (411) and a presence area notification device ( 413) and one or more terminals (41 to 4) arranged in the local area.
3) is further provided, and the information processing device (30) is
The ID card reader (41) of the terminal (41-43)
1) Receives the transmitter ID code read in 1), narrows down the existence area of the corresponding transmitter (21-23), and notifies the existence area from the existence area notification device (413) of the terminal (41-43). A local area mobile object detection system characterized by: 5. The local area mobile object detection system according to claim 1, wherein the information processing device (30) has two values based on a ratio of reception intensities of two reception stations. A curve (circle or straight line) in which the ratio of the distance from the receiving station is constant is calculated, this is performed by changing the combination of the receiving stations, and a plurality of curves (C14 to C45) are calculated,
A local area moving body discovery system, characterized in that a local area where the intersections of the plurality of curves (C14 to C45) are dense is set as a moving body existing area (A). 6. The local area mobile object detection system according to claim 1, wherein the information processing device calculates a reception intensity distribution (DC) from the position and the reception intensity of each receiving station. , Its received power distribution (DC)
A local area moving object discovery system, wherein a local area projecting above a predetermined threshold reception intensity is set as a moving object existing area. 7. The local area moving object discovery system according to claim 1, wherein the information processing device receives a reception intensity of each receiving station as input, and determines a plurality of existing region candidates. A local area moving object discovery system, which is a neurocomputer (301n) that outputs an existence probability index for each (A1 to A5). 8. The local area moving body locating system according to claim 1, wherein the information processing device (301f) determines a moving body based on a position and a receiving intensity of each receiving station and a fuzzy rule. A local area mobile object detection system characterized by estimating the existence area of a mobile object. 9. A transmitter (21-23) used in the local area moving object detection system according to claim 1, wherein the transmitter is a hat, an armband, a badge, and a brooch (21B). A transmitter characterized in that a moving object such as a pendant is incorporated into a wearable item. 10. A transmitter (21 to 23) used in the local area moving body locating system according to any one of claims 1 to 8, which is attached to a moving body such as a card, sheet or patch. A transmitter characterized by being incorporated in a thin medium that is worn, held, or mounted.