JP2006170817A - Position measurement system and position measurement method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system which can accurately measure the position of foots of a human, more specifically, a position measurement system and a position measurement method allowing to reduce the power consumption of devices by estimating the orientation of a human body. <P>SOLUTION: A human 111 attaches an ID transmitting shoe right 21 to his/her right foot and attaches an ID transmitting shoe left 22 to his/her left foot on the stage surface 1. Radio waves transmitting/receiving device 31 and a control display device 51 are placed in space 2 under the stage surface. The radio waves transmitting/receiving device 31 transmits radio waves toward the stage surface 1. The ID transmitting shoe right 21 and the ID transmitting shoe left 22 receive the radio waves and transmit each ID information to the radio waves transmitting/receiving device 31. The radio waves transmitting/receiving device 31 transmits the ID information and the position information of the radio waves transmitting/receiving device to the control display device 51. The control display device 5 displays the position and orientation of the human 111 on a screen on which the stage surface is displayed. By repeating this time serially, the position and movement of the human on the stage can be checked on the screen. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a position measurement system and a position measurement method for performing position measurement using a position recognition device and a radio wave transmission / reception device.

  Conventionally, an apparatus for recognizing an individual's position has been proposed (see, for example, Patent Documents 1 and 2).

  Patent Document 1 describes that a personal position recognition device including a transmitter and a coil attached to a shoe, an antenna installed on a floor, and a receiver operate as follows. That is, the transmitter attached to the shoe reads the ID from the ROM, causes electromagnetic induction by the coil, and sends the magnetic flux to the antenna installed on the floor. The antenna installed on the floor receives the magnetic flux, and when the ID is transmitted to the receiver, the position of the person can be measured by adding and outputting the ID and the position code.

  In recent years, with the development of information communication technology, an “IC tag” having an integrated circuit with memory (generally, “non-contact data carrier”, “wireless IC tag”, “non-contact IC”, “non-contact IC label”, “ It may be expressed as “contactless IC tag”, “RFID”, etc.) on an article, and various information is recorded on the “IC tag” to display product information, streamline logistics, or manage the article. It is getting done. Note that information such as an individual identification code is generally stored in the memory of the “IC tag”. Information such as an individual identification code is read and written by an IC tag reader / writer. Patent Document 2 describes a movement observation apparatus that can measure the movement locus of an animal or an article using an IC tag.

JP-A-7-131392 (paragraphs 0023-0026) JP 2002-58648 A (paragraphs 0011-0013)

  However, in the method described in Patent Document 1, for example, when performing a play or dance on the stage, the difference between the movement of the performer during the previous practice and the movement of the performer during the actual practice is corrected. There is a problem that it is difficult to memorize and analyze the actual movements of each time in a computer. Moreover, since it is necessary to attach a transmitter and a battery to shoes, it is possible that shoes will become heavy and large, and restrictions will be placed on human movement.

  Further, in the method described in Patent Document 2, since the observation target is regarded as one point, the detailed movement of the observation target cannot be grasped. Further, it is necessary for the reader / writer to always transmit a signal and to receive a radio wave from the IC tag, and there is a problem that a wasteful power source is consumed.

  Accordingly, an object of the present invention is to provide a position measurement system and a position measurement method that can measure detailed human movements and reduce power consumption.

  The position measuring system according to the present invention is a position measuring system capable of measuring the position of a moving object existing in a predetermined area, and a plurality of the position measuring systems are installed over a part or all of the floor of the predetermined area. Position detection means (for example, antenna 311) for receiving individual identification information from individual identification information transmitting means (for example, IC tag 211) for storing individual identification information for identifying the position of a moving object attached to a part; When the position detection means receives the individual identification information, an individual position information output means (for example, a reader) that sends out individual position information including the received individual identification information and information indicating the position detection means that has received the individual identification information. Individual management information (for example, IC tag management information) in which the writer 411) is associated with information indicating the moving part to which the individual identification information transmitting means is attached and the individual identification information. Individual position information stored in advance and previously stored position detection means management information (for example, antenna position management information) including information indicating each position detection means and information indicating its installation position, and sent by the individual position information storage means Control means (for example, control device 502) that receives information and generates information indicating the position of the moving part and the direction of the moving object based on the received individual position information, position detection means management information, and individual management information; It is characterized by having. With the configuration described above, the position of the moving part and the direction of the moving object can be determined and collected as numerical data.

  For example, the control means specifies the position detection means that has received the ID information based on the individual position information and the individual management information, and sets the position detection means based on the specified position detection means and the position detection means management information. And the installation position of the specified position detection means is set as the position of the moving part (for example, antenna position).

  The moving object has a pair of moving parts, and the control means specifies the position of the pair of moving parts consisting of the right side and the left side based on the individual management information corresponding to the moving object, and the midpoint of the specified pair of moving parts Is the origin on the circular coordinates, the position of the moving part on the right side is 0 degree, and the direction of the moving object is the direction of 90 degrees when the position of the moving part on the left side is 180 degrees. May be. According to such a configuration, the direction of the moving object can be determined from the position of the moving part.

  The individual position information output means controls the driving of the position detection means, and the control means estimates the traveling direction of the moving object, and the operation of the position detecting means determined by the estimating means to be not in the traveling direction of the moving object. A stop instruction signal output means for outputting an operation stop instruction signal for instructing a stop, and an operation stop release for instructing the release of the operation stop of the position detecting means determined by the estimating means to be in the traveling direction of the moving object A stop release instruction signal output means for outputting an instruction signal, and the individual position information output means stops driving the position detection means in response to the operation stop instruction signal, and the position detection means in response to the operation stop release instruction signal It may be configured to release the stop of driving.

  Display means connected to the control means may be provided, and the display means may be configured to display information indicating the position and orientation of the moving object output by the control means.

  The predetermined area where the moving object exists may be a stage.

  The individual identification information transmission means includes a landing detection means for detecting that the moving part has landed on the floor of the predetermined area, and a transmission permission means for permitting transmission of the individual identification information when the landing detection means detects the landing. It may be configured as follows.

  The position measuring method according to the present invention is a position measuring method capable of measuring the position of a moving object existing in a predetermined area, and is attached to a moving part of the moving object over a part of or the entire floor of the predetermined area. A plurality of position detecting means for receiving the individual identification information from the individual identification information transmitting means for storing the individual identification information for specifying the position of the moving object, and information indicating each position detecting means and the installation position thereof are indicated. Position detection means management information including information is stored in advance, and when any position detection means receives the individual identification information, the position detection means that has received the individual identification information is specified, and the specified position detection means and position Information indicating the position of the moving part and the direction of the moving object is generated based on the detection means management information.

  The installation position of the position detection unit may be specified based on the specified position detection unit and the position detection unit management information, and the installation position of the specified position detection unit may be set as the position of the moving part.

  The midpoint of the position of the pair of moving parts consisting of the right and left sides specified based on the individual management information corresponding to the moving object is the origin on the circular coordinates, the position of the right moving part is 0 degrees, and the left side When the position of the moving part is 180 degrees, the direction of the moving object may be a 90-degree direction.

  Estimating the moving direction of the moving object, stopping the operation of the position detecting means determined not to be in the moving direction of the moving object, and stopping the operation of the position detecting means determined to be in the moving direction of the moving object by the estimating means. You may be comprised so that it may cancel | release.

  It may be configured to detect that the moving part has landed on the floor of the predetermined region, and permit the transmission of the individual identification information by the individual identification information transmitting unit when the landing of the moving part is detected.

  According to the present invention, it is possible to measure the detailed movement of an observation target equipped with a plurality of individual identification information transmitting means and to reduce the power consumption of the apparatus.

Embodiment 1 FIG.
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram showing an outline of a position measurement system according to an embodiment of the present invention. The position measurement system shown in FIG. 1 includes a radio transmission / reception device 31 that communicates with an ID transmission shoe 21 (ID transmission shoe right) and an ID transmission shoe 22 (ID transmission shoe left), and a control display device 51. In FIG. 1, one radio transmission / reception device 31 is shown, but many other radio transmission / reception devices having the same configuration as the radio transmission / reception device 31 are provided.

  The stage surface 10 is, for example, a theater stage. The stage surface 1 indicates a space above the stage surface 10, and the person 111 moves on the stage surface 1. The ID transmission shoe 21 is attached to the right foot of the person 111 and the ID transmission shoe 22 is attached to the left foot. Stage 2 below indicates a space below stage 10. The stage surface 2 is the back side of the stage surface 1 and is, for example, the floor of a theater stage. A radio wave transmission / reception device 31 and a control display device 51 are provided under the stage surface 2.

  FIG. 2 is a block diagram showing a configuration example of the position measurement system according to the embodiment of the present invention. In the position measurement system shown in FIG. 2, the control display device 51 includes a line concentrator 501, a control device 502, and a display device 503. The radio wave transmitter / receiver 31 includes an antenna 311 (antenna a), an antenna 312 (antenna b), an antenna 313 (antenna c), an antenna 314 (antenna d), and a reader / writer 411. The radio wave transmission / reception device 32 includes an antenna 321 (antenna w), an antenna 322 (antenna x), an antenna 323 (antenna y), an antenna 324 (antenna z), and a reader / writer 421. In FIG. 2, two radio wave transmission / reception devices 31 and 32 are shown, but many other radio wave transmission / reception devices having the same configuration as the radio wave transmission / reception devices 31 and 32 are provided. Moreover, although the case where the radio wave transmission / reception devices 31 and 32 have four antennas is shown, each radio wave transmission / reception device has more antennas. In addition, although two people 111 and 121 are illustrated in FIG. 2, the number of people who move 1 on the stage surface may be one or three or more.

  In the example shown in FIGS. 1 and 2, the IC tag 211 is mounted on the ID transmission shoe 21, and the IC tag 212 is mounted on the ID transmission shoe 22. In the embodiment of the present invention, footwear such as shoes is exemplified as the ID transmission shoes 21 and the ID transmission shoes 22, but a belt or the like that is attached to the feet instead of the footwear may be used. In the embodiment of the present invention, the IC tag 211 and the IC tag 212 are shown mounted on the ID transmission shoe, but may be directly attached to the foot.

  Each of the IC tag 211, the IC tag 212, the IC tag 221 and the IC tag 222 incorporates a storage unit (not shown) and stores ID information. ID information is information including an individual identification code for uniquely identifying each IC tag. In this embodiment, the ID information is used to specify a person as a moving object wearing a shoe with an IC tag, more specifically, a moving part of the moving object (in this example, the left foot and the right foot). used.

  The IC tag 211 and the IC tag 212 have a built-in antenna function (not shown), a function of executing processing for transmitting / receiving radio waves to / from the radio wave transmission / reception device 31, and the radio wave transmission / reception device 31. Has a function of generating electric power for operating its own IC tag from the radio wave transmitted by. Similarly, the IC tag 221 and the IC tag 222 have a built-in antenna function, have a function of executing processing for transmitting / receiving radio waves to / from the radio wave transmission / reception device 32, and transmitted by the radio wave transmission / reception device 32. It has a function of generating electric power for operating its own IC tag from radio waves. Therefore, the individual identification information transmitting means is realized by the IC tags 211, 212, 221, 222.

  The antenna 311, the antenna 312, the antenna 313, the antenna 314, the antenna 321, the antenna 322, the antenna 323, and the antenna 324 transmit radio waves to the IC tag 211, IC tag 212, IC tag 221, and IC tag 222, and the IC tag 211 The radio wave including the ID information is received from the IC tag 212, the IC tag 221 and the IC tag 222. Therefore, the position detection means that is attached to the moving part of the moving object and receives the individual identification information (ID information) for specifying the position of the moving object includes the antenna 311, the antenna 312, the antenna 313, the antenna 314, the antenna 321, and the antenna. 322, antenna 323, and antenna 324 are realized.

  The reader / writer 411 reads ID information from an IC tag mounted on an ID transmission shoe via the antenna 311, the antenna 312, the antenna 313, and the antenna 314. That is, the reader / writer 411 has a function of executing processing for transmitting and receiving signals to and from the IC tag via the antenna 311, the antenna 312, the antenna 313, and the antenna 314, and the IC tag via each antenna. Has a function of executing demodulation processing of a signal received from.

  Similarly, the reader / writer 412 reads ID information from an IC tag mounted on an ID transmission shoe via the antenna 321, the antenna 322, the antenna 323, and the antenna 324. The reader / writer 421 has a function of executing processing for transmitting and receiving signals to and from the IC tag via the antenna 321, the antenna 322, the antenna 323, and the antenna 324, and receives from the IC tag via each antenna. A function of executing demodulation processing of the received signal.

  The control display device 51 includes a line concentrator 501, a control device 502, and a display device 503. The control device 502 is communicably connected to the line concentrator 501 and the display device 503. The line concentrator 501 has a hub function and is connected to a plurality of reader / writers so as to communicate with each other.

  The control device 502 is connected to the display device 503, stores a program and a database for executing the processing described below in a storage device (not shown), and a CPU built in the control device 502 has its CPU By operating according to the program, processing described below is executed. Therefore, the control means is realized by the control device 502.

  FIG. 3 is an explanatory diagram illustrating an installation example of an antenna. The example shown in FIG. 3 shows a case where the stage surface 10 is viewed from above, and an IC tag in which the antenna 311 exists in the range of the antenna position 811 (antenna position a) of the stage surface 10 and is in the range of the antenna position 811. Indicates that radio waves can be transmitted and received. Similarly, the antenna 312 exists in the range of the antenna position 812 (antenna position b), and the IC tag in the range of the antenna position 812 and the antenna 313 exist in the range of the antenna position 813 (antenna position c), and It shows that radio waves can be transmitted / received to / from the IC tag in the range of the antenna position 813. For example, the antennas installed at the antenna positions 811 to 818 (antenna positions a, b, c, d, e, f, g, and h) are included in the radio wave transmission / reception device 31 and the antenna positions 821 to 828 (antennas). Antennas installed at positions w, x, v, z, o, p, q, r) are included in the radio wave transmitting / receiving device 32.

  The control device 502 stores in advance antenna position management information indicating the correspondence between antennas and antenna positions. The antenna position management information includes information of “antenna specifying information” and “antenna position information”, and is information indicating where the antenna is installed on the actual stage. In the example illustrated in FIG. 3, “antenna 311” is registered as antenna specifying information, and “antenna position 811” is registered as antenna position information. The antenna installation position may be information indicating an actual position on the stage, and may be, for example, coordinates in a coordinate system determined on the stage, latitude and longitude, or the like.

  Further, the reader / writer 411 and the reader / writer 421 execute various processes based on control signals from the control device 502. Examples of the control signal transmitted from the control device 502 include an “operation stop instruction signal” and an “operation stop release instruction signal”. When receiving the “operation stop instruction signal”, the reader / writers 411 and 421 stop driving the respective antennas, and when receiving the “operation stop release instruction signal”, the reader / writers 411 and 421 resume driving of the antennas.

  Next, the operation of the present embodiment will be described with reference to FIG. 1, FIG. 2, FIG. 3, and FIG.

  In the radio wave transmitting / receiving apparatus 31, the reader / writer 412 drives the antenna 311, the antenna 312, the antenna 313, and the antenna 314 in order. Accordingly, radio waves are transmitted from only one antenna at a time. Therefore, the power consumption of the radio wave transmission / reception device 31 is reduced. Note that if the time for switching the antenna to be driven is shortened, that is, if the switching speed is increased (for example, 0.1 second), substantially all radio waves are simultaneously transmitted from the antennas 311, 312, 313, and 314. Can be considered. Similarly, in the radio wave transmission / reception device 32, the reader / writer 412 drives the antenna 321, the antenna 322, the antenna 323, and the antenna 324 in order.

  In the example shown in FIG. 2, when a person 111 stands on the stage surface 1, the IC tag 211 mounted on the ID transmission shoe 21 is stored in the IC tag 211 when the radio wave of the antenna 311 is received. ID information is transmitted to the antenna 311. The IC tag 212 mounted on the ID transmission shoe 22 transmits the ID information stored in the IC tag 212 to the antenna 313 when receiving the radio wave from the antenna 313. Note that since the radio wave transmitted by the antenna reaches a distance depending on the performance of the antenna, the antenna and the IC tag can communicate even when the person 111 is walking or the like and the foot is not in contact with the stage surface 101. Is possible.

  Similarly, when a person 121 stands on the stage 1, the IC tag 221 transmits ID information stored in the IC tag 221 to the antenna 322 when receiving a radio wave from the antenna 322. Further, the IC tag 222 transmits ID information stored in the IC tag 222 to the antenna 324 when receiving the radio wave of the antenna 324.

  The reader / writer 411 receives ID information via the respective antennas 311 and 313. Further, the reader / writer 421 receives the ID information via the respective antennas 322 and 324.

  When the reader / writer 411 receives the ID information while driving the antenna 311, the reader / writer 411 controls the individual position information including the received ID information and the reception antenna information via the communication network and the concentrator 501. To the device 502. The reception antenna information is information indicating a reception antenna of ID information. For example, when ID information is received while the antenna 311 is being driven, the reception antenna information is information indicating the antenna 311. That is, the reader / writer 411 realizes individual position information output means for sending individual position information including the received individual identification information (ID information) and information indicating the position detection means (antenna) that has received the individual identification information. To do.

  When the reader / writer 411 receives the ID information while driving the antenna 313, the reader / writer 411 transmits the received ID information and the individual position information including the reception antenna information indicating the antenna 313 to the communication network and the concentrator 501. To the control device 502. Similarly, the reader / writer 421 also transmits the individual position information including the received ID information and reception antenna information to the control device 502 via the communication network and the line concentrator 501.

  The control device 502 displays a screen indicating the stage and the antenna position on the display device 503 based on the antenna position management information. The screen displayed on the display device 503 may be a figure drawn by reducing the stage surface or a video image of the actual stage surface.

  The control device 502 includes a storage unit (not shown), and stores individual position information (ID information and reception antenna information) received from each reader / writer. The control device 502 displays a screen indicating which ID information is received by which antenna based on the individual position information and antenna position management information received from each reader / writer, that is, at which antenna position the ID transmission shoe is present. Is displayed on the display device 503. The display device 503 displays a screen that can indicate the positions of all the antennas installed on the stage, and displays the antenna positions of the antennas that have received the ID information.

  The control device 502 stores IC tag management information as individual management information in advance. The IC tag management information includes each information of “information indicating a wearer” and “information indicating a moving part (right foot or left foot)” associated with “ID information”, and is held as a list. Based on the IC tag management information and the individual position information (ID information and reception antenna information) received from each reader / writer, the control device 502 grasps the reception antenna information corresponding to the wearer and the moving part. That is, the antenna that receives the ID information is specified. Furthermore, based on the receiving antenna information and the antenna position management information as the position detection means management information, the position on the stage where the moving object and its moving part exist is determined. Here, the information indicating the wearer and the information indicating the moving part are included in the IC tag management information, but the information indicating the wearer or the information indicating the moving part may not be included in the IC tag management information. Good.

  In the example illustrated in FIG. 2, ID information indicating that the person 111 is the right foot is received by the antenna 311. Therefore, the control device 502 determines that the right foot of the person 111 is at the antenna position 811. Similarly, ID information indicating the left foot of the person 111 is received by the antenna 313. Therefore, the control device 502 determines that the left foot of the person 111 is at the antenna position 813 (antenna position c).

  The control device 502 displays an image corresponding to the ellipse 820 including the antenna position 811 and the antenna position 813 as an image indicating the position where the person 111 exists on the display device 503. FIG. 4 is an explanatory diagram illustrating an example of a display screen displayed on the display device 503. In the example illustrated in FIG. 4, an ellipse 620 that is an image corresponding to the ellipse 820 is displayed as an image indicating the position where the person 111 is present.

  In addition, the control device 502 sets the right foot position to 0 degree with the antenna position 812 that is the midpoint between the antenna position 811 that is the position of the right foot of the person 111 and the antenna position 813 that is the position of the left foot as the origin on the circular coordinates. The direction of 90 degrees when the position of the left foot is 180 degrees is specified as the direction of the person 111.

  In the example illustrated in FIG. 3, since the antenna position 811 corresponds to the right foot of the person 111 and the antenna position 813 corresponds to the left foot of the person 111, it is determined that the person 111 is facing the direction of the arrow 819. The control device 502 displays an image corresponding to the arrow 819 on the display device 503 as an image indicating the direction of the person 111. In the example illustrated in FIG. 4, an arrow 619 that is an image corresponding to the arrow 819 is displayed as an image indicating the direction of the person 111.

  Similarly, the control device 502 determines that the right foot of the person 121 is at the antenna position 822 (antenna position x) and the left foot is at the antenna position 824 (antenna position z), and the position where the person 121 exists on the display device 503. An image corresponding to the ellipse 830 including the antenna position 822 and the antenna position 824 is displayed. In the example illustrated in FIG. 4, an ellipse 630 that is an image corresponding to the ellipse 830 is displayed as an image indicating a position where the person 121 exists.

  In addition, since the antenna position 822 corresponds to the right foot of the person 121 and the antenna position 824 corresponds to the left foot of the person 121, the control device 502 is directed to the direction of the arrow 829 in the example illustrated in FIG. Judge that The control device 502 displays an image corresponding to the arrow 829 on the display device 503 as an image indicating the direction of the person 121. In the example illustrated in FIG. 4, an arrow 629 that is an image corresponding to the arrow 829 is displayed as an image indicating the direction of the person 121.

  By performing the above-described series of operations in chronological order, a person watching the screen can check the movements of a plurality of people on the stage surface as images on the screen.

  Note that the control device 502 displays the position of the person 111 (the ellipse 620 in this example) and the direction of the person 111 (the arrow 629 in this example) on the display device 503 based on the IC tag management information and the ID information. A screen showing the wearer (person 111) and the moving part (right foot) may be displayed.

  When the control device 502 determines each person's position and orientation, the control device 502 controls the radio wave transmission / reception device including the antennas present in each person's current and traveling directions to output radio waves. That is, the control device 502 estimates the traveling direction of the moving object, and outputs an operation stop instruction signal for instructing to stop the operation of the antenna determined not to be in the traveling direction of the moving object to the reader / writer. Control is performed to output an operation stop cancellation instruction signal for instructing cancellation of the operation stop of the antenna determined to be in the traveling direction to the reader / writer.

  For example, in the example shown in FIGS. 2 and 3, since the person 111 exists at a position including the antenna position 811 and the antenna position 813, the antennas present at the current position are the antenna 311 and the antenna 313. Therefore, the control device 502 transmits an operation stop cancellation instruction signal to the radio wave transmission / reception device 31 including the antenna 311 and the antenna 313. The radio wave transmitter / receiver 31 (specifically, the reader / writer 411) that controls the driving of the antenna 311 and the antenna 313 sets each antenna to output radio waves based on the operation stop cancellation instruction signal. That is, the stop of the antenna drive is released.

  Further, since the direction of the person 111 is the direction of the arrow 819, radio wave transmission / reception including the antenna position 815 (antenna position e) and the antenna position 817 (antenna position g) located in the direction estimated to be the traveling direction of the person 111. The control device 502 transmits an operation stop cancellation instruction signal to a device (not shown). The radio wave transmitting / receiving apparatus sets each antenna to a state of outputting radio waves based on the operation stop cancellation instruction signal. That is, the stop of the antenna drive is released.

  Similarly, since the person 121 exists at a position including the antenna position 822 and the antenna position 824, the antennas present at the current position are the antenna 322 and the antenna 324. Therefore, the control device 502 transmits an operation stop cancellation instruction signal to the radio wave transmission / reception device 32 including the antenna 322 and the antenna 324. The radio wave transmitter / receiver 32 sets a state in which radio waves are output from each antenna based on the operation stop cancellation instruction signal.

  Further, since the direction of the person 121 is the direction of the arrow 829, a radio wave transmission / reception apparatus (not shown) including an antenna position 826 (antenna position p) and an antenna 828 (antenna position r) that is assumed to be the traveling direction of the person 121. )), The control device 502 transmits an operation stop release instruction signal. The radio wave transmission / reception apparatus sets a state in which radio waves are output from each antenna based on the operation stop cancellation instruction signal.

  As described above, according to the first embodiment, the position of a person's foot and the direction of the body can be measured for a plurality of persons at the same time. For example, it is possible to collect and analyze the difference in movement of people between rehearsals and performances such as concerts, plays, and musicals on the stage. By using the result of analysis, for example, when movement differs between theatrical rehearsal and the performance, the movement of the foot can be corrected. In addition, when a substitute appears, it is possible to visually instruct even a fine movement of the foot. It can also be used for simulations such as narrator positioning at the exhibition hall.

  Moreover, by installing it in a corridor or the like in a building, it is possible to grasp the movement of a patient in a hospital and the movement of a visitor in a nursing home in real time and use it for a service.

  Furthermore, since radio waves can be output only to radio wave transmission / reception devices located in the current and traveling directions of each person based on the direction of the person, power resources can be used efficiently.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described with reference to the drawings. The configuration of the position measurement system according to the second embodiment of the present invention is the same as the configuration of the position measurement system according to the first embodiment (FIGS. 1 and 2), and a description thereof will be omitted.

  FIG. 5 is an explanatory diagram illustrating an example of the ID transmission shoe 21. In the example shown in FIG. 5, the IC tag 211 is mounted on the ID transmission shoe 21 as in the examples shown in FIGS. 1 and 2.

  FIG. 6 is a block diagram illustrating a configuration example of the IC tag 211. The IC tag 211 includes a pressure sensor 911 (pressure sensor R) and an antenna function unit 912 (antenna function unit R). An IC tag 211 having a built-in pressure sensor 911 and antenna function unit 912 is mounted on the insole of the ID transmission shoe 21. In the example shown in FIGS. 5 and 6, the case of the ID transmission shoe 21 is illustrated, but the configuration of the ID transmission shoe 22 is the same.

  The IC tag 211 has a function of generating power for operating its own IC tag from the radio wave transmitted by the radio wave transmitting / receiving device 31. The antenna function unit 912 has a function of executing processing for transmitting / receiving radio waves to / from the radio wave transmission / reception device 31.

  The antenna function unit 912 controls a function for controlling transmission of radio waves based on a control signal from the pressure sensor 911. For example, the pressure sensor 911 outputs a “pressure detection signal” to the antenna function unit 912 when detecting a pressure equal to or higher than a specified value. Upon receiving the “pressure detection signal” from the pressure sensor 911, the antenna function unit 912 turns on the radio wave transmission function.

  When the transmission function is off, the antenna function unit 912 does not transmit radio waves to the radio transmission / reception device 31 even if radio waves are received from the radio transmission / reception device 31. When the transmission function is on, when the radio wave is received from the radio wave transmission / reception device 31, the antenna function unit 912 transmits the radio wave to the radio wave transmission / reception device 31.

  Further, in the present embodiment, the prescribed value of the pressure detected by the pressure sensor 911 is set with the pressure applied to the sole of the foot in a state where a person is standing or a foot is depressed when walking. Shall. That is, the pressure sensor 911 detects that the moving part has landed on the stage surface 10 (a floor in a predetermined area), and transmits the individual identification information to the antenna function unit 912 when detecting the landing of the moving part. to approve.

  Next, the operation of the present embodiment will be described with reference to FIG. 1, FIG. 2, FIG. 3, FIG. 5, FIG. As shown in FIG. 2, the IC tag 211 mounted on the ID transmission shoe 21 transmits ID information to the antenna 311 in a state where a person 111 is standing on the stage surface 1 or a right foot is depressed when walking. .

  By mounting the pressure sensor 911 and the antenna function unit 912, the movement (trajectory) of the moving object and the moving part can be displayed on the screen more easily. In the first embodiment, even when the foot of the person 111 is not in contact with the stage surface 101, the antenna and the IC tag can communicate with each other, and the radio wave transmitting / receiving apparatus receives the ID information from the IC tag. Is possible. In other words, the radio wave transmitting / receiving apparatus receives the ID information from the IC tag for a predetermined period of time before landing and after landing, in addition to the time when the foot has landed on the stage surface 101. Therefore, redundant information may be displayed on the screen. However, in this embodiment, the radio wave transmitting / receiving device can be configured to receive the ID information from the IC tag only when the foot has landed on the stage surface 101.

  Hereinafter, a usage example of the second embodiment will be described by taking a case where the person 111 is 1 on the stage surface and standing on one foot with the right foot as an example.

  The pressure sensor 911 detects a pressure equal to or higher than a specified value and outputs a “pressure detection signal” to the antenna function unit 912. The antenna function unit 912 transmits ID information stored in the IC tag 211 to the antenna 311 when receiving a “pressure detection signal” from the pressure sensor 911 while receiving radio waves from the radio transmission / reception device.

  The reader / writer 411 reads the individual position information stored in the storage unit and transmits it to the control device 502 via the communication network and the line concentrator 501.

  The control device 502 displays a screen indicating that the ID information has been received by the antenna 311 on the display device 503. In the example illustrated in FIG. 2, the ID information indicating that the person 111 is the right foot is received by the antenna 311. Accordingly, the control device 502 determines that the right foot of the person 111 has landed at the antenna position 811, and an image indicating a position corresponding to the antenna position 811 is displayed as an image indicating the position where the right foot of the person 111 has landed. It is displayed on the display device 503.

  FIG. 7 is an explanatory diagram illustrating an example of a display screen displayed on the display device 503. In the example illustrated in FIG. 7, an image indicating the right foot is displayed at an antenna position 1011 (antenna position A) indicating a position corresponding to the antenna position 811 as an image indicating the position where the right foot of the person 111 has landed. Since the left foot is not displayed, it can be seen that the person 111 is standing on one foot with the right foot or is walking when the left foot is in the air.

  In addition, although the person 111 was illustrated in this Embodiment, the person 121 may be sufficient and both the person 111 and the person 121 may be sufficient.

  As described above, according to the second embodiment, it is possible to simultaneously measure a position where a person's foot is landing for a plurality of persons.

  In the first embodiment and the second embodiment described above, a stage surface is illustrated as a moving surface of a person, but a corridor in a building may be used. By installing in the corridor of the building, for example, the movement of the patient in the hospital and the movement of the visitor in the nursing home can be grasped in real time and used for the service.

  In the first embodiment and the second embodiment described above, an example is described in which one IC tag transmits and receives radio waves to and from one antenna. However, one IC tag includes a plurality of antennas. When transmitting and receiving radio waves to and from the reader / writer, the reader / writer detects the antenna with the strongest received radio waves. The reader / writer has a received electric field strength measurement function.

  In the first embodiment and the second embodiment described above, the case where the movement of the moving object or the moving part is displayed on the screen in real time is taken as an example, but instead of the display device 503 or the display device 503. In addition, a storage device may be provided, and data indicating the movement of the moving object or the moving part may be stored in the storage device and displayed on the screen later.

  INDUSTRIAL APPLICABILITY The present invention is a position measurement system that can collect information on the position of a person's foot and the direction of the body, and can be effectively applied when it is desired to grasp the movement of a person on a theater stage, a hospital corridor, or the like.

It is a conceptual diagram which shows the outline of the position measuring system by this invention. It is a block diagram which shows the structural example of the position measurement system by this invention. It is explanatory drawing which shows the example of installation of an antenna. It is explanatory drawing which shows the example of the display screen in 1st Embodiment. It is explanatory drawing which shows the example of ID transmission shoes in 2nd Embodiment. It is a block diagram which shows the structural example of the IC tag 211 in 2nd Embodiment. It is explanatory drawing which shows the example of the display screen in 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 On stage surface 2 Below stage surface 10 Stage surface 21 ID transmission shoes 22 ID transmission shoes 31 Radio wave transmission / reception apparatus 32 Radio wave transmission / reception apparatus 51 Control display apparatus 111 Person 121 Person 211-212 IC tag 221-222 IC tag 311-314 Antenna 321 To 324 antenna 411 reader / writer 421 reader / writer 501 line concentrator 502 controller 503 display device

Claims (12)

A position measurement system capable of measuring the position of a moving object existing in a predetermined area,
Individual identification information is received from individual identification information transmitting means that is installed over a part or the entire area of a predetermined area and stores individual identification information that is attached to a moving part of a moving object and that identifies the position of the moving object. Position detecting means for
When any of the position detection means receives the individual identification information, the individual position information output for sending the individual position information including the received individual identification information and the information indicating the position detection means that has received the individual identification information. Means,
A position that stores in advance individual management information in which information indicating a moving part on which the individual identification information transmitting means is mounted and individual identification information are associated with each other, and includes information indicating each position detection means and information indicating an installation position thereof Detecting means management information in advance, receiving the individual position information sent by the individual position information storage means, and based on the received individual position information, the individual management information and the position detecting means management information, And a control means for generating information indicating the direction of the moving object. The control means specifies the position detection means that has received the individual identification information based on the individual position information and the individual management information, and determines the installation position of the position detection means based on the specified position detection means and the position detection means management information. The position measurement system according to claim 1, wherein the position of the moving part is determined by specifying the specified installation position of the position detection means. The moving object has a pair of moving parts,
The control means specifies the position of the pair of moving parts consisting of the right side and the left side based on the individual management information corresponding to the moving object, and sets the midpoint of the specified pair of moving parts as the origin on the circular coordinates, The position measurement system according to claim 1 or 2, wherein the position of the part is set to 0 degree and the direction of the moving object is a direction of 90 degrees when the position of the left moving part is set to 180 degrees. The individual position information output means performs drive control of the position detection means,
The control means is configured to estimate a traveling direction of the moving object, and a stop instruction to output an operation stop instruction signal for instructing to stop the operation of the position detecting means determined by the estimating means not to be in the traveling direction of the moving object. Signal output means, and stop cancellation instruction signal output means for outputting an operation stop cancellation instruction signal for instructing cancellation of operation stop of the position detection means determined by the estimation means to be in the traveling direction of the moving object. ,
The said individual position information output means stops the drive of a position detection means according to the said operation stop instruction | indication signal, and cancels the stop of a drive of a position detection means according to the said operation stop cancellation | release instruction signal. 4. The position measurement system according to any one of 3 above. Comprising display means connected to the control means,
The position measurement system according to any one of claims 1 to 4, wherein the display means displays information indicating the position and orientation of the moving object output by the control means. The position measurement system according to any one of claims 1 to 5, wherein the predetermined area where the moving object exists is a stage. The individual identification information transmission means includes a landing detection means for detecting that the moving part has landed on the floor of the predetermined area, and a transmission permission means for permitting transmission of the individual identification information when the landing detection means detects the landing. The position measurement system according to any one of claims 1 to 6. A position measuring method capable of measuring the position of a moving object existing in a predetermined area,
Position detection for receiving individual identification information from individual identification information transmitting means for storing individual identification information for identifying the position of a moving object that is attached to a moving part of the moving object over a part or the entire floor of a predetermined area Install multiple means,
Store in advance position detection means management information including information indicating each position detection means and information indicating the installation position,
If any of the position detection means has received the individual identification information, identify the position detection means that has received the individual identification information,
A position measurement method comprising generating information indicating a position of a moving part and a direction of a moving object based on the specified position detection means and the position detection means management information. The position measuring method according to claim 8, wherein an installation position of the position detection unit is specified based on the specified position detection unit and position detection unit management information, and the installation position of the specified position detection unit is set as the position of the moving part. Based on the individual management information corresponding to the moving object, identify the position of the pair of moving parts consisting of the right side and the left side in the moving object,
When the midpoint of the position of the pair of moving parts consisting of the specified right and left sides is the origin on the circular coordinates, the position of the right moving part is 0 degrees, and the position of the left moving part is 180 degrees The position measuring method according to claim 8 or 9, wherein the direction of the moving object is a 90-degree direction. Guess the moving direction of the moving object,
Stop the operation of the position detecting means determined not to be in the moving direction of the moving object,
The position measurement method according to any one of claims 8 to 10, wherein the stop of the operation of the position detection means determined to be in the traveling direction of the moving object by the estimation means is released. Detect that the moving part has landed on the floor of the predetermined area,
The position measuring method according to any one of claims 8 to 11, wherein transmission of individual identification information by the individual identification information transmitting means is permitted when the landing of the moving part is detected.

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