JP2002148349A - Position detecting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To specify an accurate position of an individual. SOLUTION: The system comprise a radio wave transmitting means 2 installed in a position detecting area 8 for transmitting a radio wave, a radio wave receiving means 3 for receiving the radio wave from the radio wave transmitting means 2 when a distance from the radio wave transmitting means 2 is a certain value or below, an individual information terminal 6 having a transmitting means for transmitting an identifier which is unique to the individual information terminal 6 by a radio communication to a base station 7 when the radio wave receiving means 3 receives the radio wave, the base station 7 for receiving the identifier from the individual information terminal 6, and a position detecting means 1 having a photographing means installed in the position detecting area 8 for photographing a human body and a position specifying means for specifying the human body in the position detecting area 8 utilizing the identifier received by the base station 7 and also specifying the position of the human body in the position detection area 8 by processing the photographed picture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for detecting a position of a person.

[0002]

2. Description of the Related Art In recent years, nursing care for the elderly has attracted attention in the context of the advent of an aging society. In particular, nursing care for patients with dementia and wandering elderly is very important, and various techniques have been proposed. It is considered that the means of tracking the behavior of these elderly people and notifying the person or the outside when abnormal behavior is performed is very important from the viewpoint of nursing care. Also, if we can measure and analyze not only elderly people but also human behavior, for example, we can obtain behavior patterns,
Lighting and air conditioning can be controlled comfortably and operated safely, which is very effective for human life.

[0003] Furthermore, it is effective to measure behaviors and the like not only of humans but also of animals and machines. In the case of animals, it is possible to use them for research on ecology which has not been known until now.
If you can measure the state and operation of the machine,
It can be operated efficiently and safely and is very effective from the viewpoint of production activities.

[0004] By the way, it is very important to grasp "who (what)", "where" and "what" in grasping the action and movement of the human body and the object. For that purpose, it is necessary to identify an individual or a specific object, detect a position in a room, and detect an operation or a posture.

A method for identifying an individual or a specific object is RF-I.
D or a method based on image recognition from a CCD image. RF-ID uses a radio wave of a specific frequency and uses a tag attached to a mobile body such as a human body or an object (also referred to as a transponder; hereinafter referred to as a tag) and an antenna connected to a host device such as a computer (also referred to as a reader). This is a system that receives tag identification information and automatically identifies an object by performing bidirectional communication with the antenna.

This system can be broadly classified into two types according to the tag reading distance. One is a short distance type using low frequency, and the reading distance between the tag and the antenna is 50c.
m or less. In these cases, the tag is generally held over an antenna, or the tag is sewn to the end of pants, and read with an antenna installed on the floor. The other is a long-distance type that incorporates a battery and uses microwaves for radio waves.
The reading distance between the tag and the antenna is more than 1 m. By carrying them on a part of a body or a part of an object, they can read tag information without being conscious when passing near an antenna.

A method based on image recognition from a CCD image is as follows.
Photographing the human body or object passing through the entrance of a room or the like with a CCD camera, extracting features such as the face of the human body or the shape or mark of the object by image recognition, and collating it with unique features registered in advance. Is used to identify an individual or a specific object.

Methods for specifying the position of a human body or an object in a room include extraction from a CCD image and extraction from temperature distribution information obtained by a two-dimensional infrared sensor. In addition, there has been proposed a method of specifying an approximate position from the intensity of radio waves from a plurality of base stations using a PHS or the like in a very large building.

As a method of detecting an operation or a posture, a method of discriminating a stationary state and an operating state using a pedometer (registered trademark), a mercury switch, or the like has been proposed in the past. recently,
Various types of acceleration sensors and gyro sensors (angular acceleration sensors) have been improved in performance, and a method for detecting a walking state, a body inclination, a walking direction, and the like using these sensors has been proposed.

[0010]

As described above, various methods have been proposed for the purpose of detecting "who (what)", "where" and "what". Can only satisfy a single function. In other words, it is not possible to comprehensively determine “who (what)”, “where” and “what”.

Although the RF-ID can identify a specific individual or an object entering a room, the directivity of antenna sensitivity is wide, and when a plurality of antennas are arranged at a short distance, they interfere with each other. The problem is that it is not possible to determine exactly where. In addition, when multiple people enter the room, it is not possible to determine “who (what)” or “where” by using the method of specifying the position of the human body or an object, and the antenna itself is expensive. RF-I
It is impossible to determine “who (what)” and “where” by D alone.

Conversely, in the extraction method from the CCD image, it is possible to detect “where”, but to determine “who (what)”, a feature amount is extracted from the image. Because of the necessity, for example, when a face cannot be seen due to a shield or at night, a human body cannot be detected at all. Therefore, it is impossible to determine “who (what)” and “where”.

SUMMARY OF THE INVENTION An object of the present invention is to provide a position detection system that accurately specifies who is located where and in consideration of the above-mentioned conventional problems.

[0014]

Means for Solving the Problems The first invention (claim 1)
Is installed in at least one place within a predetermined position detection area or within a predetermined range from the position detection area, and a distance from the radio wave transmission means for transmitting a radio wave is constant. A radio wave receiving means for receiving a radio wave from the radio wave transmitting means when the value becomes equal to or less than a value, and a transmitting means for transmitting an identifier unique to the personal information terminal by wireless communication when the radio wave receiving means receives the radio wave A personal information terminal having, a base station that receives an identifier from the personal information terminal, a photographing unit that is installed at at least one location in the position detection area and photographs a human body, and an identifier unique to the personal information terminal. While identifying the human body by comparing the correspondence information indicating the correspondence relationship with the human body corresponding to the identifier and the identifier received by the base station, By processing the images taken by the photographing means, a position sensing system, characterized by comprising a position specifying means for specifying a position in the body of the position detection area.

According to a second aspect of the present invention (corresponding to claim 2), the radio wave transmitting means transmits the unique radio wave, and the personal information terminal analyzes the radio wave received by the radio wave receiving means. The radio communication apparatus further includes a source identification unit that identifies the radio wave transmission unit of the radio wave, and the transmission unit specifies the identifier of the radio wave transmission unit of the transmission source specified by the source identification unit. A position detection system according to a first aspect of the present invention, wherein the position detection system transmits a signal to a base station.

According to a third aspect of the present invention (corresponding to claim 3), a plurality of the radio wave transmitting means exist within at least one of the position detection areas or within a predetermined range from the position detection area. When a person carries the personal information terminal and is present in the position detection area, the position specifying unit sets an identifier unique to each personal information terminal and an identifier of each radio wave transmitting unit of a radio wave transmission source. Utilizing the personal information terminal to determine which of the personal information terminals is present in the vicinity of which of the radio wave transmitting means, and specify the position of each of the plurality of persons in the position detection area. Is a position detection system according to the present invention.

According to a fourth aspect of the present invention (corresponding to claim 4), a plurality of the position detection areas exist, and the radio wave transmitting means exists corresponding to each of the position detection areas.
The radio wave transmitting unit transmits the unique radio wave, the position specifying unit is present corresponding to each of the position detection areas, the personal information terminal analyzes the radio wave received by the radio wave receiving unit, Further comprising a source identification means for identifying the radio wave transmission means of the source of the radio wave,
The transmitting means also transmits to the base station the identifier of the radio wave transmitting means of the radio wave specified by the transmission source specifying means, and the base station transmits the radio wave of the radio wave transmitting source. Utilizing the identifier of the means, the transmission destination of the personal information terminal unique identifier received from the personal information terminal is determined from among the plurality of position specifying means, and the determined personal identification terminal is transmitted to the determined position specifying means. The position detecting system according to the first aspect of the present invention, which transmits an identifier unique to the information terminal.

According to a fifth aspect of the present invention (corresponding to claim 5), the radio wave transmitting means transmits the radio wave in a unique frequency pattern, and the transmission source specifying means transmits the radio wave received by the radio wave receiving means. The position detecting system according to any one of the second to fourth aspects of the present invention, wherein the radio wave transmitting means of the radio wave transmitting source is specified by analyzing a frequency pattern.

According to a sixth aspect of the present invention (corresponding to claim 6), the position specifying means has a database of height data of each human body carrying the plurality of personal information terminals, and specifies the human body. The position detection system according to any one of the first to fifth aspects of the present invention, wherein the database is used.

According to a seventh aspect of the present invention (corresponding to claim 7), any one of the first to sixth aspects is characterized in that the position specifying means and the base station are connected via a network. It is a position detection system as described in the invention.

According to an eighth aspect of the present invention (corresponding to claim 8), the personal information terminal further includes a posture / action detecting means for detecting a posture / action of a human body, and the transmitting means comprises:
The position detecting system according to any one of the first to seventh aspects of the present invention, wherein the personal information detected by the action detecting means is also transmitted to the base station.

A ninth aspect of the present invention (corresponding to claim 9) is that the personal information terminal includes a personal body carrying the personal information terminal.
Posture, behavior, activity state, and has the function of collecting personal information about all or part of the physiological state, and only when the personal information has substantially changed, the personal information terminal unique identifier is Or the identifier thereof and all or a part of the personal information are transmitted to the base station. The position detecting system according to any one of the first to eighth aspects of the present invention.

According to a tenth aspect of the present invention (corresponding to claim 10),
The personal information terminal has a function of collecting personal information on all or a part of the posture, behavior, activity state, and physiological state of the human body carrying the personal information terminal, and temporarily stores the personal information. The position detecting system according to any one of the first to ninth aspects of the present invention, further comprising a storage unit for temporarily storing.

According to an eleventh aspect of the present invention (corresponding to claim 11),
Any one of the eighth to tenth books, wherein the transmitting means of the personal information terminal transmits the radio wave transmitting means identifier of the radio wave transmitting source to the base station with priority over the personal information. It is a position detection system as described in the invention.

The twelfth invention (corresponding to claim 12) provides:
A management device that transmits predetermined information to the personal information terminal, and when the personal information terminal receives the predetermined information from the management device, reports the predetermined information using a sound or a color. A first means, further comprising: a notifying means, a switch pressed as an indication of intention when the person carrying the personal information terminal acknowledges the notification, and a judging means for judging ON / OFF of the switch. To the eleventh to eleventh aspects of the invention.

According to a thirteenth aspect of the present invention (corresponding to claim 13),
A medium carrying a program and / or data for causing a computer to execute all or a part of the functions of all or part of any of the first to twelfth aspects of the present invention, and which can be processed by a computer A medium characterized by the above.

According to a fourteenth aspect of the present invention (corresponding to claim 14),
An information aggregate, which is a program and / or data for causing a computer to execute all or a part of functions of all or a part of the first to twelfth means of the present invention.

As described above, in order to detect “who (what)” and “where” are located, it is necessary to use a radio wave of a specific frequency such as RF-ID to detect the vicinity of a radio wave transmission position. Radio transmission / reception means and position detection means based on image processing such as CCD images have different roles. By combining information from radio transmission / reception means and extraction from position detection means, the human body Accurately capture the entrance and exit of
By giving the entry information and the information of "who (what)" entered the room to the position detection means, "who (what)""where"
We propose a system that can easily and accurately obtain behavioral information that can be used for various applications by obtaining the location information in a complex manner.

In the proposed system, for example, a database is referred to at the time of processing in the position detecting means from information specifying an individual obtained by the radio wave transmitting / receiving means,
A method of extracting information effectively used as image processing parameters such as height and shoulder width is used. By doing so, it is possible to realize highly accurate position detection for each individual at the time of processing by the position detection means.

As a method for actually operating this system, when a method of acquiring information to a network by polling from a management terminal on a network which is frequently used as a general method is adopted, In particular, when changes (information) occur simultaneously, it takes a considerable amount of time for the information to reach the position detecting means. For this reason, it is necessary to shorten the time until the information reaches the position detecting means. The present invention is also directed to fulfilling this need.

Therefore, a method is proposed in which information to be sent to the network is prioritized, temporarily stored in the personal information terminal, and information requiring higher speed is preferentially sent to the network through the base station. Examples of the information requiring higher speed include information input from the above-described radio wave transmitting / receiving means to the position detecting means. When the system is used with the radio wave transmission / reception means and the detection area of the position detection means (such as the image area in the CCD) adjacent to each other, information input from the radio wave transmission / reception means to the position detection means is given priority over the network By transmitting the data to the position detection means, it is possible to quickly identify the individual of the human body required when the position detection means performs analysis, and it is possible to retrieve the height and apparent area of the target human body from the database early, For example, even when the apparent height is inaccurate because the feet are shielded by a shield, the position of the human body can be accurately specified.

From this, the position of the human body can be specified quickly and accurately by the position detecting means, and it is possible to reliably specify "who (what)" and "where". Become.

As described above, according to the present invention, it is possible to obtain "who (what)" and "where" in a complex manner by flowing individual entry information from the radio wave transmitting / receiving means to the position detecting means. It proposes a system that can do it. In addition, by judging information input from the radio wave transmitting / receiving means to the position detecting means at the personal information terminal and preferentially flowing the information to the network, the position detecting means can detect the information sufficiently early and accurately without being affected by network traffic. The position of the human body can be specified. This makes it possible to reliably realize a method of detecting “who (what)” and “where” where no effective method has existed up to now.

[0034]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.

(Embodiment 1) A position detection system according to Embodiment 1 will be described with reference to the drawings. FIG. 1 shows a schematic configuration diagram of a position detection system according to Embodiment 1 of the present invention. The configuration in the present embodiment will be described below.

The position detecting system according to the present embodiment includes a personal information terminal 6 including a position detecting means 1, a radio wave transmitting means 2, a radio wave receiving means 3, a posture / action detecting means 4, and a sensor signal processing means 5. And a base station 7.
The position detecting means 1 and the base station 7 are connected by wire. Here, the connection is described as wired, but a wireless method may be used. In addition, the personal information terminal 6 does not need to include the posture / action detecting means 4 and may include detecting means for other information.

The personal information terminals 6 are owned by humans, and each personal information terminal 6 has a unique personal information terminal number (identifier). Note that the radio wave transmission distance of the radio wave transmitting means 2 is determined by the radio wave receiving means 3 of the personal information terminal 6 when the person has the personal information terminal 6.
From about 1 m to 2 m in order to reliably receive radio waves from
m is desirable.

It is desirable that the radio wave transmitting means 2 and the position detecting means detecting area 8 are adjacent to each other or overlap so that the position detecting means 1 can use the information of the personal information terminal 6 without fail. The information transmitted from the personal information terminal 6 to the base station 7 is transmitted to the position detecting means 1 and specifies a human body present in the position detecting means detection area 8. An example of the posture / action detecting means 4 corresponds to an acceleration sensor capable of detecting a gravitational acceleration, and the posture sensor can detect a posture or the like by detecting an increase or a decrease in the gravitational acceleration.

Next, the operation of the position detecting system according to the first embodiment of the present invention will be described with reference to FIG.

The radio wave transmitting means 2 transmits a radio wave 15, and when a person carrying the personal information terminal 6 having the built-in radio wave receiving means 3 enters the position detecting means detection area 8, the personal information terminal The radio wave receiving means 3 in 6 receives the radio wave 15 from the radio wave transmitting means 2, the sensor signal processing means 5 performs A / D conversion of the received signal, and the personal information terminal 6 exists near the radio wave transmitting means 2. It is sequentially determined whether or not it is present, and if it is present, a radio wave transmitting means number 17 (identifier of the radio wave transmitting means 2 of the radio wave transmitting source) is created.

Next, the sensor signal processing means 5 of the personal information terminal 6 sets the radio wave transmitting means number 17 to the personal information terminal number 18
(Identifier unique to the personal information terminal 6) and transmits it to the base station 7, and the base station 7 transmits the radio wave transmitting means number 17 and the personal information terminal number 18 to the position detecting means 1. From the received personal information terminal number 18 and the correspondence information of the person corresponding to each personal information terminal number 18, the position detecting means 1 identifies the human body whose image is being processed and whose position is detected at that time. To identify.

As described above, by using each personal information terminal number 18, it is possible to specify the person whose image is being processed at that time, and the position of the specified person in the position detection means detection area 8 is determined. Can be accurately detected.

If a plurality of detection areas exist, the radio wave transmitting means 2 exists corresponding to each detection area, and the position detection means 1 also exists corresponding to each detection area, the base station 7 Radio transmission means number 1
7, the personal information terminal number 18 from the personal information terminal 6 may be transmitted to the position detecting means 1 corresponding to the radio wave transmitting means number 17.

(Embodiment 2) A position detection system according to Embodiment 2 will be described with reference to the drawings. FIG. 3 is a diagram for explaining a method of separating radio wave transmitting means in the position detection system according to the second embodiment of the present invention. By using a state in which an alternating current is supplied (power supply state) and a state in which no electric current is supplied (non-power supply state), the power supply state is made intermittent.

During energization, a magnetic field is generated around the radio wave transmitting means. The intermittent pattern in this energized state is defined as energizing time 1
9 is set by a combination of the non-energization time 20 and an alternating current of a predetermined frequency Hz1 is generated during the energization state.
As the intermittent pattern, both a periodic pattern and a non-periodic pattern can be adopted. However, when a periodic pattern is adopted, the intermittent pattern frequency is selected by selecting a frequency band that can be sufficiently distinguished from Hz1. Adjust so that false detection does not occur.

This intermittent pattern is set for each radio wave transmitting means. By using this intermittent pattern to compare the reception pattern 21 received by the radio wave receiving means with the intermittent patterns 22 and 23 registered in advance on the receiver side, the transmission of the radio wave received by the radio wave receiving means is performed. The origin can be specified.

Next, a method for specifying the position of each of a plurality of persons in the position detecting means of the position detecting system according to the second embodiment of the present invention will be described with reference to FIG. There are two entrances, a detection area entrance A and a detection area entrance B, adjacent to the detection area 8 of the position detection means 1, and a first radio wave transmission means 2a and a second radio wave transmission means 2b are installed at each of them.

When the human body 10a carrying the personal information terminal 6a and the human body 10b carrying the personal information terminal 6b enter the detection area 8 of the position detecting means from the detection area entrance A and the detection area entrance B, respectively, the base station 7 The determination result (personal information terminal number and radio wave transmission means number) is transmitted from both personal information terminal 6a and personal information terminal 6b.

The transmitted determination result is transmitted to the position detecting means 1, and the human body 10 entering the position detecting means 1 from each of the first radio wave transmitting means 2a and the second radio wave transmitting means 2b.
a and personal information terminal number 18a corresponding to the human body 10b
The personal information terminal number 18b is input to the position detecting means 1.

From this information, the position detecting means 1 can identify who each of the plurality of human bodies detected in the detection area 8 of the position detecting means 1 is. Thereby, the position of each person can be specified. The number of radio wave transmitting units adjacent to the detection area 8 of the position detecting unit 1 may be three or more.

(Embodiment 3) A position detection system according to Embodiment 3 will be described with reference to the drawings. FIG. 5 shows a system configuration via a network and cooperation with position detection means in the position detection system according to the embodiment of the present invention. The toilet sensor, the base station 7, and the position detecting means 1 are connected to the network.
When the personal information terminal number is transmitted from the personal information terminal 6 to the base station 7, the personal information terminal number is transmitted to the network. Although information other than the personal information terminal number flows on the network as needed, the position detecting means 1 sequentially checks the information in the network, and checks the personal information terminal number transmitted from the base station 7 to the network. The detected human body is specified in combination with the human body detection information.

The toilet sensors shown here include those that detect the entrance of the toilet and those that detect the use or non-use of the toilet, and are used on a network to detect the location of the human body. . In addition, this toilet sensor is a bed sensor (it can detect bed stay on the bed and leaving the bed)
Alternatively, a fine movement sensor (which can detect that a human body is moving in the detection area) may be used.

(Embodiment 4) A position detection system according to Embodiment 4 will be described with reference to the drawings. FIG. 6 is a diagram showing a method of detecting a position with high accuracy using the radio wave transmitting means number 17 and the personal information terminal number 18 in the position detecting means 1 of the position detecting system according to the fourth embodiment of the present invention.

The position detecting means 1 uses the personal information terminal number 18 of the radio wave transmitting means number 17 and the personal information terminal number 18 transmitted from the base station 7 to record personal data such as height. With reference to the database, personal data such as the height of the person carrying the corresponding personal information terminal is extracted. Next, the position detecting means 1 determines a position by image processing using the extracted personal data as a parameter.

As a method of performing image processing by the position detecting means 1, for example, a method of installing a CCD at an upper corner of a room, observing a diagonally lower part, extracting the top of the head, and estimating a person's position by its coordinates is known. is there. This method is highly accurate because it can perform robust position detection against the effects of concealment and shadows by furniture etc., but it is necessary to input the height of the human body in advance, and when an uncertain human body is detected Cannot determine the height. Therefore, the method of referring to the database from the personal information terminal number 18 functions effectively.

FIG. 7 is a diagram showing an example of the reference database according to the fourth embodiment of the present invention. The database stores personal information terminal numbers, names corresponding to the personal information terminal numbers, and physical characteristics such as height. The physical features include, in addition to height, items that can be used as parameters in image processing, such as shoulder width and head height.

FIG. 8 shows an example of a data component of personal information in the position detection system of each of the above embodiments. As a configuration of the personal information data, a personal information terminal number is added in addition to a detection result detected by the personal information terminal such as a radio wave transmitting means number. With this configuration method, it is possible to know which personal information terminal transmitted the detection result to the base station.

(Embodiment 5) A position detection system according to Embodiment 5 will be described with reference to the drawings. FIG. 9 shows the position detection system according to the fifth embodiment of the present invention. In the personal information terminal 6, when a plurality of detection results occur substantially simultaneously, the number of the radio wave transmitting means 2 is given priority and the base station 7 is displayed.
FIG. 5 is a diagram showing a method of storing a signal to be transmitted to the STA.

RAM for temporarily storing transmission signals provided in a personal information terminal for storing signals to be transmitted to a base station
To temporarily store the event that occurred.

FIG. 9 shows that the human body wearing the personal information terminal passes near the radio wave transmitting means, and the information detected by the posture / activity detecting means and other behavior information (other information 1) substantially simultaneously. The state stored in the transmission signal temporary storage RAM is shown. Note that the priority in the case where the upward direction in FIG. 9 is transmitted to the base station is higher. In this case, the radio wave transmission means number is stored in a higher order than other information 1. For this reason, when transmitting to the base station, information on the radio wave transmitting means number is transmitted preferentially.

When detection results come up substantially simultaneously from detection means (radio wave reception means, attitude / action detection means, switches, etc.) provided in the personal information terminal, each is confirmed, and the information is included in the information. Is included in the transmission information temporary storage RAM preferentially,
Transmit to the base station preferentially. In this way, for example, even when the frequency of transmission to the base station is low, or when a huge detection result is generated at once, the radio wave transmitting means number reaches the position detecting means via the base station early. In addition, the time during which the human body detected by the position detecting means cannot be specified can be reduced, and the data corresponding to the personal information terminal can be extracted from the database at an early stage, so that the human body can be detected smoothly.

FIG. 10 is a diagram showing a method of temporarily storing a signal to be transmitted to the base station with priority given to the number of the radio wave transmitting means in the position detection system according to the fifth embodiment of the present invention. When a detection result comes up from a detection means (a radio wave receiving means, a posture / action detecting means, a switch, etc.) provided in the personal information terminal, the detection result is sequentially confirmed, and the information includes a radio wave transmitting means number. In this case, the transmission information temporary storage R is given priority over the information (information such as the posture) other than the radio wave transmission means number stored in the RAM in advance.
Store in AM.

In FIG. 10, when the first radio wave transmitting means signal and other information (other information 1) of the personal information terminal have already been stored, the personal information terminal has passed near the second radio wave transmitting means 2. In this case, a situation where each data is stored in the transmission signal temporary storage RAM is shown. It should be noted that the priority in the case where the upward direction in the figure is transmitted to the base station is higher.

In this case, a new personal information terminal
The information of the second radio wave transmitting means signal is an RA for temporarily storing transmission information.
M, but is stored at a higher level than other information (other information 1) previously stored. Therefore, when transmitting to the base station, information on the radio wave transmitting means number is transmitted preferentially.

In this way, for example, when the polling speed is low and the frequency of transmission to the base station is low, or when a huge detection result occurs at one time, the data is passed to the position detecting means via the base station early. Since the radio wave transmitting means number can be reached, the time during which the human body detected by the position detecting means cannot be specified can be reduced, and the data corresponding to the personal information terminal can be extracted from the database at an early stage so that the human body can be smoothly processed. Detection can be performed.

In each of the above embodiments, the posture and
Personal information on all or part of the posture, behavior, activity state, and physiological state of the human body carrying the personal information terminal, detected by the behavior detecting means and the like, is collected by the personal information terminal, and all or all of the personal information is When a part has substantially changed, the personal information terminal number (identifier unique to the personal information terminal) or the personal information terminal number and all or part of the personal information are transmitted from the personal information terminal to the base station. It may be. In addition, the substantial change shown here means that physiological quantities such as an acceleration output and a pulse acquired by an acceleration sensor are classified in two to several stages in advance, and that the classification result has changed. Only in this case, the signal is transmitted to the base station.

Further, the position detection system in each of the above embodiments has a management device for transmitting predetermined information (for example, warning information) to the personal information terminal, and the personal information terminal receives the information from the management device. When the information is received, a reporting means for reporting the information using a sound or a color, a switch pressed as an indication of intention when the personal information terminal carrier understands the report, ON of the switch,
The determination means for determining OFF may be further incorporated in the personal information terminal.

The present invention is a medium that carries a program and / or data for causing a computer to execute all or a part of the functions of all or part of the above-described means of the present invention, and is readable by a computer. Further, the read program and / or data is a medium that executes the function in cooperation with the computer.

Further, the present invention is an information aggregate which is a program and / or data for causing a computer to execute all or a part of the functions of all or part of the above-described means of the present invention, and is read by a computer. Possible and read programs and / or data are information aggregates that perform the functions in cooperation with the computer.

The data includes a data structure, a data format, a type of data, and the like. The medium includes a recording medium such as a ROM, a transmission medium such as the Internet, and a transmission medium such as light, radio waves, and sound waves. The carried medium is, for example, a recording medium on which a program and / or data is recorded,
Includes transmission media for transmitting programs and / or data.

The term "processable by a computer" means that the program can be read by a computer in the case of a recording medium such as a ROM, and the program and / or data to be transmitted in the case of a transmission medium. Is to be handled by a computer as a result of the transmission.

The information aggregate includes, for example, software such as programs and / or data.

As described above, the configuration of the present invention may be realized by software or hardware.

[0074]

As is apparent from the above description, the present invention can provide a position detection system for accurately specifying who is located where.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a position detection system according to a first embodiment of the present invention.

FIG. 2 is an operation explanatory diagram of the position detection system according to the first embodiment of the present invention;

FIG. 3 is a diagram for explaining a method of separating radio wave transmitting means according to Embodiment 2 of the present invention.

FIG. 4 is a view for explaining a method of specifying the position of each of a plurality of persons according to Embodiment 2 of the present invention;

FIG. 5 is a system configuration diagram via a network according to a third embodiment of the present invention;

FIG. 6 is a diagram for explaining a method for detecting a position with high accuracy according to a fourth embodiment of the present invention;

FIG. 7 is a diagram showing an example of a reference database according to the fourth embodiment of the present invention.

FIG. 8 is a diagram showing an example of a data component in personal information according to the embodiment of the present invention;

FIG. 9 is a diagram for explaining a signal accumulation method for transmitting a number of a radio wave transmitting means to a base station with priority given to the fifth embodiment of the present invention;

FIG. 10 is a diagram for explaining a method of temporarily storing a signal for transmitting to a base station with priority given to the number of the radio wave transmitting means according to the fifth embodiment of the present invention;

[Explanation of symbols]

 1. Position detection means 2. 2. Radio wave transmission means Radio wave receiving means 4. Posture / action detection means 5. 5. Sensor signal processing means Personal information terminal 7. Base station 8. 14. Position detection means detection area Radio waves 16. Signal 17. Radio wave transmission means number Personal information terminal number 19. Energization time 20. No power supply time 21. Receive pattern 22. 22. Intermittent pattern of radio wave transmitting means signal 1 Intermittent pattern of radio wave transmission means signal 2

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhiko Hashimoto 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Akira Hattori 1006 Odaka Kadoma Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. ( 72) Inventor Shigeyuki Inoue 1006 Kadoma, Kadoma, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. (reference) 2G005 DA05 5K067 AA21 BB21 DD17 EE02 EE10 EE16 HH23 JJ53 KK15

Claims (14)

[Claims] 1. A radio wave transmitting means which is installed in a predetermined position detection area or at least one position within a predetermined range from the position detection area and transmits radio waves, and a distance from the radio wave transmitting means is constant. A radio wave receiving means for receiving a radio wave from the radio wave transmitting means when the value becomes equal to or less than a value, and a transmitting means for transmitting an identifier unique to the personal information terminal by wireless communication when the radio wave receiving means receives the radio wave A personal information terminal having: a base station for receiving an identifier from the personal information terminal; and a base station installed at at least one location in the position detection area;
Photographing means for photographing a human body; identifying the personal body by comparing the identifier unique to the personal information terminal and the correspondence information indicating the correspondence between the human body corresponding to the identifier, and the identifier received by the base station And a position specifying unit that processes an image photographed by the photographing unit to specify a position of the human body in the position detection area. 2. The radio wave transmitting means transmits the unique radio wave, and the personal information terminal analyzes the radio wave received by the radio wave receiving means and specifies the radio wave transmitting means of the transmission source of the radio wave. It further comprises a transmission source identification unit, wherein the transmission unit also transmits, to the base station, an identifier of a radio wave transmission unit of the transmission source of the radio wave specified by the transmission source identification unit. The position detection system according to claim 1. 3. A plurality of said radio wave transmitting means are present in at least one of said position detection areas or within a predetermined range from said position detection area, and a plurality of persons carry said personal information terminal with said position. If the personal information terminal exists in the detection area, the position specifying unit uses the identifier of each personal information terminal and the identifier of each radio wave transmitting unit of the radio wave transmission source to determine which personal information terminal 3. The position detection system according to claim 2, wherein it is determined whether or not the radio wave is present in the vicinity of the radio wave transmitting means, and a position of each of the plurality of persons is specified in the position detection area. 4. A plurality of said position detection areas, wherein said radio wave transmitting means exists corresponding to each of said position detection areas, said radio wave transmitting means transmits said unique radio wave, and said position specifying means Exists corresponding to each of the position detection areas, wherein the personal information terminal analyzes a radio wave received by the radio wave receiving means and specifies a transmission source specifying means for specifying the radio wave transmitting means of the transmission source of the radio wave. The transmitting unit further transmits to the base station an identifier of a radio wave transmitting unit of the radio wave source specified by the source specifying unit, wherein the base station transmits the radio wave. Using the identifier of the original radio wave transmitting means, the transmission destination of the personal information terminal unique identifier received from the personal information terminal is determined from among the plurality of position specifying means, The position detecting system according to claim 1, wherein the received identifier unique to the personal information terminal is transmitted to the determined position specifying means. 5. The radio wave transmitting unit transmits the radio wave in a unique frequency pattern, and the transmission source specifying unit analyzes the frequency pattern of the radio wave received by the radio wave receiving unit,
5. The position detecting system according to claim 2, wherein said radio wave transmitting means of said radio wave transmitting source is specified. 6. The method according to claim 1, wherein the position specifying means has a database of height data of each human body carrying the plurality of personal information terminals, and uses the database when specifying the human body. The position detection system according to claim 1. 7. The position detecting system according to claim 1, wherein said position specifying means and said base station are connected via a network. 8. The personal information terminal further includes a posture / action detecting means for detecting a posture / action of a human body, and the transmitting means also transmits the personal information detected by the posture / action detecting means to the base. The position detecting system according to claim 1, wherein the position is transmitted to a station. 9. The personal information terminal has a function of collecting personal information on all or a part of a posture, an action, an activity state, and a physiological state of a human body carrying the personal information terminal, The personal information terminal unique identifier, or the identifier and all or a part of the personal information are transmitted to the base station only when the personal information has substantially changed. The position detection system according to 1. 10. The personal information terminal has a function of collecting personal information on all or a part of a posture, an action, an activity state, and a physiological state of a human body carrying the personal information terminal, 2. The position detecting system according to claim 1, further comprising a storage unit for temporarily storing the personal information. 11. The transmitting means of the personal information terminal transmits the radio wave transmitting means identifier of the radio wave transmitting source to the base station with priority over the personal information. The position detection system according to any one of the above. 12. A management device for transmitting predetermined information to the personal information terminal, wherein when the personal information terminal receives the predetermined information from the management device, the predetermined information is sounded or colored. And a switch that is pressed as an indication of intention when the person carrying the personal information terminal acknowledges the report, and a determination unit that determines whether the switch is ON or OFF. The position detection system according to claim 1, wherein 13. A medium carrying a program and / or data for causing a computer to execute all or a part of the functions of all or part of the present invention according to any one of claims 1 to 12. A medium which can be processed by a computer. 14. A program and / or data for causing a computer to execute all or a part of functions of all or a part of the present invention according to any one of claims 1 to 12. Information aggregate to do.