JP2008209965A - Moving route detection system for mobile body and accessory - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely detect and acquire a moving route of a mobile body by a simple method using a wireless tag. <P>SOLUTION: The moving route detection system S1 for the mobile body includes a plurality of route tags Tk provided in different positions within a moving route of a student H, and a portable reader 1 carried by the student H to read information of the route tag Tk. The portable reader 1 includes a tag detection antenna 4 capable of acquiring a route tag ID from the route tag Tk through radio communication at a plurality of different times, and calculates the moving route of the student H based on information acquisition results at the plurality of different times acquired according to the movement of the student H. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a moving path detection system for a moving body that detects a moving path of the moving body using a wireless tag information reading device that reads information from a wireless tag, and to an accessory that can be used therefor.

  An RFID (Radio Frequency Identification) system that reads / writes information in a non-contact manner between a small wireless tag and a reader (reading device) / writer (writing device) is known. For example, a wireless tag circuit element provided in a label-like wireless tag includes an IC circuit unit that stores predetermined wireless tag information and an antenna that is connected to the IC circuit unit and transmits and receives information. Even if the battery is dirty or placed in an invisible position, the reader / writer side can access (read / write information) the RFID tag information of the IC circuit unit, and there are already various Practical use is progressing in various fields.

  2. Description of the Related Art Conventionally, there is a device described in Patent Document 1, for example, in which the above-described wireless tag is used to protect a child from a guardian, or management for preventing theft / illegal taking of articles. . In this prior art, each management target article is provided with a radio tag, and the identification information (tag ID) of the radio tag and the biometric information (such as a fingerprint) of the person in charge of handling the management target article are associated with each other in advance. Register in the database. On the other hand, a wireless tag information reading device is provided in the vicinity of the exit of the facility where the article to be managed is located. Then, when an article to be managed is about to be taken out by a person, the management apparatus is inquired of the biological information read from the person and the tag ID read by the wireless tag information reading apparatus, and is registered in the database. Determine if it matches the content.

JP 2006-107308 A (FIG. 14 and the like)

  As described above, in the above-described prior art, the entrance / exit management in the building of the article can be performed by reading the identification information of the wireless tag attached to the article. Here, if a method of attaching a wireless tag to a management object (article) as described above and applying it to the mobile object and attaching the wireless tag to the mobile object and reading it with a wireless tag information reader, it is convenient. It is possible to detect the moving path of the moving body by a simple method, which is very convenient. However, the above prior art basically targets articles placed stationary, and such points have not been taken into consideration.

  An object of the present invention is to provide a moving path detection system for a moving body that can reliably detect and grasp the moving path of the moving body by a simple method using a wireless tag, and an accessory used therefor.

  In order to achieve the above object, a first invention provides a plurality of first wireless tags provided at different positions in a moving path of a moving body, and the mobile body side for reading information of the first wireless tag. A moving path detection system for a mobile body having a wireless tag information reader provided therein, wherein the wireless tag information reader acquires predetermined information from the first wireless tag at a plurality of different timings via wireless communication. A first information acquisition unit capable of calculating a movement path of the mobile body based on information acquisition results at a plurality of different timings acquired by the first information acquisition unit as the mobile body moves; A moving path calculation means is provided.

  In the first invention of the present application, the first wireless tag is provided at a different position in the moving route, and the wireless tag information reading device is provided on the moving body side. Then, when the mobile body moves, the first information acquisition unit sequentially acquires information from the plurality of first wireless tags at a plurality of different timings according to the movement, and according to the information acquisition results at the plurality of timings. The first movement route calculation means calculates the route of the moving body.

  As described above, a simple method using a wireless tag is performed by sequentially obtaining information a plurality of times between the first wireless tag and the wireless tag information reading device and calculating a route as the moving body moves. Thus, it is possible to reliably detect and grasp the moving path of the moving body.

  In order to achieve the above object, the second invention includes a second wireless tag provided on the moving body side and a plurality of wireless tag information reading devices provided at different positions in the moving path of the moving body. A moving path detection system for a moving body, wherein the wireless tag information reading device includes second information acquisition means for acquiring predetermined information from the second wireless tag via wireless communication, and the movement of the moving body Accordingly, the second movement path calculation for calculating the movement path of the moving body based on the information acquisition result from the RFID tag information reading device arranged at the different position acquired by the second information acquisition means. Means is provided.

  In the second invention of the present application, the second wireless tag is provided on the moving body side, and the wireless tag information reading devices are provided at different positions in the moving path of the moving body. Then, when the mobile body moves, information is sequentially acquired from the second wireless tag of the mobile body by the second information acquisition means of each wireless tag information reading device as the mobile body moves, and the second information is acquired according to the acquisition result. The movement route calculation means detects the route of the moving body.

  In this way, a simple technique using a wireless tag is performed by sequentially acquiring information a plurality of times between the second wireless tag and the wireless tag information reading device as the moving body moves, and performing path detection. Thus, it is possible to reliably detect and grasp the moving path of the moving body.

  According to a third aspect, in the first aspect, the RFID tag information reading device is provided on a substantially ring-shaped member that can be attached to a human body as the moving body.

  With the wireless tag information reading device provided on the substantially ring-shaped member attached to the human body, the route detection can be performed by sequentially acquiring the information with the first wireless tag a plurality of times as the human body moves.

  In a fourth aspect based on the second aspect, the second wireless tag is provided on a substantially ring-shaped member that can be attached to a human body as the moving body.

  The second wireless tag provided on the substantially ring-shaped member attached to the human body can sequentially acquire information from a plurality of wireless tag information reading devices according to the movement of the human body, thereby performing path detection.

  In a fifth aspect based on the fourth aspect, the second wireless tag is a coil antenna provided with a loop coil, a dipole antenna in which a plurality of antenna elements are arranged substantially linearly, or a substantially planar planar antenna. It is characterized by having.

  Information can be sequentially acquired from a plurality of RFID tag information reading devices according to the movement of the human body via the coil antenna, the dipole antenna, or the planar antenna of the second RFID tag, and path detection can be performed.

  According to a sixth aspect of the present invention, in any one of the third to fifth aspects of the present invention, the wireless tag information reading device or the second wireless tag provided on the substantially ring-shaped member is the substantially ring-shaped in a state of being attached to the human body. It is provided in at least two places on one side and the other side of the member.

  Thereby, even if the direction of the substantially ring-shaped member changes due to the movement of the human body or the change in posture, the wireless tag information reading device (or the second wireless tag) in at least one of the two locations can reliably communicate And reliability in detection can be improved.

  In a sixth aspect based on the sixth aspect, the wireless tag information reading device or the second wireless tag is provided at least at two positions in the front-rear direction of the human body in the substantially ring-shaped member in the mounted state. It is characterized by.

  As a result, even if either one of the front and rear directions of the human body corresponds to a direction in which communication is good and the other side corresponds to a direction in which communication is poor, the wireless tag information reading device (or the second wireless tag) in any one place is reliable. In addition, the communication state can be improved, and the reliability in detection can be improved.

  An eighth invention according to any one of the third to seventh inventions, wherein the substantially ring-shaped member communicates with the RFID tag information reading device or the second RFID tag according to whether the human body is attached or not attached. Communication switching means for switching between enabling and disabling by function is provided.

  This makes it possible to invalidate the communication function when the human body is not worn, so that power can be saved or unnecessary communication interference can be prevented.

  According to a ninth invention, in any one of the third to eighth inventions, the substantially ring-shaped member is provided with a shield means for reducing communication signal strength on an inner peripheral side or an outer peripheral side in a mounted state on the human body. It is characterized by providing.

  As a result, when the substantially ring-shaped member is used reversibly and is used in a certain direction, the movement path can be detected, and when it is turned upside down, the movement path cannot be detected. Therefore, the range of usage modes of the user is widened, and usability can be improved.

  In a tenth aspect of the present invention, in any one of the first to ninth aspects, the path of the moving body calculated by the first movement path calculation unit or the second movement path calculation unit, and a predetermined predetermined path It is characterized by having a route judging means for judging the coincidence with the.

  It is possible to detect whether or not a predetermined route has been accidentally deviated by determining whether or not the predetermined route matches.

  In an eleventh aspect based on the tenth aspect, the route determination means is configured such that the first or second information acquisition means receives the predetermined information from the wireless tag disposed in an area other than the predetermined predetermined route. When information is acquired, it is determined that the information does not match the predetermined route.

  Because it is possible to reliably detect that it has deviated from the predetermined route by acquiring information from the wireless tag that should not transmit and receive if it follows the predetermined route, take a predetermined action such as generating an alarm Is possible.

  A twelfth invention is characterized in that, in the tenth or eleventh invention, the route judging means judges coincidence with a predetermined route according to the information acquisition time by the first or second information obtaining means. And

  As a result, if information is acquired from the wireless tag at a time different from the time that should pass if the predetermined route is followed at a normal speed, this ensures (at least partially) that the predetermined route has been removed. Since it can be detected, it is possible to take a predetermined response such as generation of an alarm.

  In a thirteenth aspect according to any one of the tenth to twelfth aspects, the route determination means matches the predetermined route according to a time sequence of information acquisition by the first or second information acquisition means. It is characterized by judging.

  Thereby, when information acquisition is performed from the wireless tag in an order different from the order of passage when the predetermined path is followed, it is possible to reliably detect (at least partially) that the predetermined path has been deviated. It is possible to take a predetermined response such as generation of an alarm.

  A fourteenth aspect of the present invention is the path abnormality signal according to any one of the tenth to thirteenth aspects, wherein a path abnormality notification signal is output according to the determination of the coincidence of the path of the moving body by the path determination unit. It has an output means, It is characterized by the above-mentioned.

  By performing the route abnormality notification using the signal output from the route abnormality signal output means, it is possible to notify and recognize that the vehicle has deviated from the predetermined route.

  In a fifteenth aspect of the present invention, in any one of the first to fourteenth aspects, the mobile body should originally pass through the path of the mobile body calculated by the first path calculation means or the second path calculation means. It has a route setting means for setting and storing as a predetermined route.

  By actually moving the mobile body in advance, the first route calculating means or the second route calculating means performs route calculation along the route, and this is stored as a predetermined route by the route setting means. Thereafter, it is possible to determine a path abnormality based on the consistency with the stored and stored predetermined path.

  In order to achieve the above object, a sixteenth aspect of the invention is an accessory that can be attached to a predetermined part of a human body in a substantially ring shape, comprising an IC circuit unit that stores information and a tag-side antenna that transmits and receives information. A wireless tag information reading device that transmits and receives information to and from the first wireless tag provided by wireless communication is provided at each of a plurality of locations in the circumferential direction of the substantially ring shape.

  By providing a wireless tag information reading device in the accessory, when a human body wearing the accessory moves, information is sequentially acquired for the first wireless tags provided at different positions in the moving path of the mobile object. Thus, it is possible to calculate a route when the human body moves. At this time, by providing RFID tag information reading devices at a plurality of substantially ring-shaped circumferential positions, even if the orientation of the approximately ring-shaped accessory changes due to the movement of the human body or a change in posture, at least one RFID tag information is provided. The reading device can be in a communicable state, and reliability in detection can be improved.

  A seventeenth aspect of the present invention is an accessory that can be attached to a predetermined part of a human body in a substantially ring shape, and includes an IC circuit unit that stores information and a tag-side antenna that transmits and receives information. A second wireless tag that transmits and receives information to and from the reader is provided at each of the plurality of substantially ring-shaped circumferential positions.

  By providing the second wireless tag on the accessory, when the human body wearing the accessory moves, information is sequentially transmitted to the second wireless tag from the wireless tag information reading device provided at a different position in the moving path of the mobile object. By performing the acquisition, it is possible to detect a route when the human body moves. At this time, by providing wireless tags at a plurality of substantially ring-shaped circumferential positions, even if the orientation of the substantially ring-shaped accessory changes due to the movement of the human body or a change in posture, at least one wireless tag can communicate. It is possible to improve the reliability in detection.

  In an eighteenth aspect based on the seventeenth aspect, the second wireless tag includes a coil antenna having a loop coil as the tag-side antenna, a dipole antenna in which a plurality of antenna elements are arranged substantially linearly, or It has a substantially planar planar antenna.

  Information can be sequentially acquired from a plurality of RFID tag information reading devices according to the movement of the human body via the coil antenna, the dipole antenna, or the planar antenna of the second RFID tag, and path detection can be performed.

  ADVANTAGE OF THE INVENTION According to this invention, the movement path | route of a moving body can be reliably detected and grasped | ascertained with the simple method using a wireless tag.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The present embodiment is an embodiment in the case where the moving path detection system of a moving body according to the present invention is applied to a system for monitoring a school attendance status of a student who goes to school between home and school (hereinafter referred to as a school attendance status monitoring system as appropriate). It is.

  FIG. 1 is a system configuration diagram showing an overall outline of a school attendance status monitoring system according to the present embodiment.

  In FIG. 1, a commuting situation monitoring system (moving body moving route detection system) S1 according to the present embodiment includes a plurality of routes installed at predetermined positions in an area including a commuting route of a student (moving body) H. Tag (first wireless tag) Tk, personal belonging tag Ts affixed to personal belonging M of student H, portable reader (wireless tag information reading device) 1 carried by student H who attends school, and this portable reader 1 is configured to include a relay station 2 that receives a notification signal transmitted from 1, and a contact PC 3 that is installed in the home of the student H and is connected to the relay station 2 so as to be able to receive the notification signal via the wide area network WN. ing.

  First, public fixed installations such as utility poles, signals, signs, posts, vending machines, etc., which are arranged at appropriate intervals in a wide area including school routes, are set in advance as passage detection points (details will be described later). The route tag Tk is attached to each of the passage detection points so that the portable reader 1 can read various information (identification information and the like will be described in detail later) via wireless communication. These route tags Tk may be affixed in advance as public infrastructure, or may be affixed personally by the parents of student H or the like.

  Further, among the possessed items M possessed by the student H, particularly important items that are desired to be prevented from being lost are affixed with possessed item tags Ts that can be similarly read by the portable reader 1.

  The portable reader 1 possessed by the student H reads various information via wireless communication from the route tag Tk and the belongings tag Ts existing within a predetermined effective communication range around the student H, and based on the read information. Thus, the judgment regarding the attendance status of the student H and the possession status of the belongings M and the corresponding notification processing are performed. In addition, the portable reader 1 of this example includes a plurality of tag detection antennas 4 in order to ensure an effective wireless communication range in all directions centered on the student H (the tag detection antenna 4 is provided by the student H). It has a function of transmitting a notification signal to the relay station 2 via a long-distance wireless communication line used by, for example, a mobile phone during notification processing.

  The relay station 2 transmits the notification signal received from the portable reader 1 to the home-side contact PC 3 connected via a wide area network WN such as a general telephone line or Internet line. .

  FIG. 2 is a system configuration diagram showing an outline of the school attendance status monitoring system S1. In FIG. 2, this school attendance status monitoring system S1 includes a route tag Tk attached to a plurality of passage detection points as described above, an belongings tag Ts attached to an item M of the student H, and a student. It is composed of a portable reader 1 possessed by H, a relay station 2 and a contact PC 3.

  The portable reader 1 includes the tag detection antenna 4 (in this example, a path tag detection antenna 4A and a belonging tag detection antenna 4B. Details will be described later), a communication antenna 6, and a portable reader main body 7. It consists of and. In this example, the mobile reader main body 7 is informed of the student's commuting situation based on various tag information read from the path tag Tk and the personal belongings tag Ts via the tag detection antenna 4 provided on the hat 5 with the antenna. When the possession status of the possessed item M is determined and notification processing is performed, a notification signal is transmitted to the relay station 2 by long-distance wireless communication via the communication antenna 6.

  The portable reader body 7 includes a CPU 8 (central processing unit), a memory 9 such as a RAM and a ROM, an operation unit 10 for inputting instructions and information from operators (students H and parents), various information, Contact communication for controlling long-distance wireless communication with the relay station 2 via the display antenna 11 for displaying a message, a timer 12 for measuring time, a speaker 13 capable of producing loud sound, and a communication antenna 6 A control unit 14 and a tag communication control unit 15 that controls wireless communication with the path tag Tk and the belongings tag Ts via the tag detection antenna 4 are provided.

  The CPU 8 of the portable reader 1 performs signal processing according to a program stored in the ROM in advance using the temporary storage function of the RAM, thereby detecting the path tag Tk and the belongings tag Ts via the tag detection antenna 4. The information is read, the commuting status of the student H and the possession status of the belongings M are determined and notified, and a notification signal is transmitted to the relay station 2 via the communication antenna 6.

  The route tag Tk and the personal belongings tag Ts have substantially the same configuration in this example, and the RFID tag circuit element To including the tag-side antenna 151 and the IC circuit unit 150 is provided on the label L for pasting. Yes (the RFID circuit element To will be described in detail later).

  The contact PC 3 installed in the home is composed of, for example, a general-purpose personal computer, and displays a corresponding notification information screen and generates a notification warning sound when receiving a notification signal from the relay station 2. It is.

  FIG. 3 is a functional block diagram illustrating an example of a detailed configuration of the CPU 8, the tag communication control unit 15, and the tag detection antenna 4 in the portable reader 1. Here, only the part that performs wireless communication with the route tag Tk and the belongings tag Ts will be described, and the communication communication control unit 14 that performs long-distance wireless communication using a known mobile phone line or the like will be described. Omitted.

  In FIG. 3, the tag communication control unit 15 accesses information (RFID information including tag ID as identification information and various transmission information) of the IC circuit unit 150 of the RFID circuit element To via the tag detection antenna 4. To do. Further, the CPU 8 has a function of processing the signal read from the IC circuit unit 150 of the RFID circuit element To to read information and generating access information for accessing the IC circuit unit 150 of the RFID circuit element To. Including, it controls the operation of the entire portable reader 1.

  The tag communication control unit 15 includes an antenna switch (switching) circuit 341 that is switched by a control signal of the CPU 8, a tag detection antenna 4 (four path tag detection antennas 4A and one personal belongings tag detection antenna 4B. A transmission unit 212 that transmits a signal (question wave) to the RFID circuit element To via a tag (to be described later) and a reflected wave (response wave) received from the RFID circuit element To by the tag detection antenna 4 are input. It comprises a receiver 213 and a transmission / reception separator 214.

  The antenna switch circuit 341 is a switch circuit using, for example, a well-known high-frequency FET or diode, and is one of the four path tag detection antennas 4A and the one belonging tag detection antenna 4B according to a control signal from the CPU 8. Are connected to the transmission / reception separator 214.

  The transmission unit 212 generates a carrier wave for accessing (reading) the RFID tag information of the IC circuit unit 150 of the RFID circuit element To by the control of the CPU 8 (corresponding to each of the path tag Tk and the belonging tag Ts 2). (It may be generated at various types of frequencies) Crystal oscillator 215A, PLL (Phase Locked Loop) 215B, VCO (Voltage Controlled Oscillator) 215C and the carrier wave generated at a predetermined frequency by the control of the CPU 8 (In this example, amplitude modulation based on the “TX_ASK” signal from the CPU 8) is performed by the transmission multiplication circuit 216 (in the case of the “TX_ASK signal”, an amplification factor variable amplifier or the like may be used) and modulated by the transmission multiplication circuit 216. Amplified modulation wave is amplified (in this example, the amplification factor is determined by the “TX_PWR” signal from the CPU 8). ) And a variable transmission amplifier 217. The output of the transmission amplifier 217 is transmitted to the tag detection antenna 4 via the transmission / reception separator 214 and supplied to the IC circuit unit 150 of the RFID circuit element To. Note that the RFID tag information is not limited to the signal modulated as described above, but may be only a carrier wave.

  The reception unit 213 multiplies the reflected wave from the RFID circuit element To received by the tag detection antenna 4 and the generated carrier wave and demodulates the received first multiplication circuit 218, and the first reception multiplication thereof. A first band-pass filter 219 for extracting only a signal of a necessary band from the output of the circuit 218, a reception first amplifier 221 that amplifies the output of the first band-pass filter 219, and an output of the reception first amplifier 221 The first limiter 220 that further amplifies the signal and converts it into a digital signal, the reflected wave from the RFID circuit element To received by the tag detection antenna 4 and the phase generated by the phase shifter 227 after the generation are 90 °. A reception second multiplication circuit 222 for multiplying the delayed carrier wave, and a second band for extracting only a signal of a necessary band from the output of the reception second multiplication circuit 222 A pass filter 223; a reception second amplifier 225 that amplifies the output of the second band pass filter 223; and a second limiter 224 that further amplifies the output of the reception second amplifier 225 and converts it into a digital signal. Yes. The signal “RXS-I” output from the first limiter 220 and the signal “RXS-Q” output from the second limiter 224 are input to the CPU 8 and processed.

  The outputs of the reception first amplifier 221 and the reception second amplifier 225 are also input to an RSSI (Received Signal Strength Indicator) circuit 226 as strength detection means, and a signal “RSSI” indicating the strength of these signals is sent to the CPU 8. It is designed to be entered. Thus, in this embodiment, the reflected wave from the RFID circuit element To is demodulated by IQ orthogonal demodulation.

  FIG. 4 is a diagram illustrating a connection configuration between the cap 5 with an antenna including the tag detection antenna 4 and the portable reader 1. For simplicity of illustration, only the portable reader 1 is schematically shown.

  In FIG. 4, the hat 5 with an antenna is provided with a ring belt (substantially ring-shaped member) 21 with an antenna on the outer periphery thereof. The antenna-attached ring belt 21 has a substantially planar shape in two places on the left and right sides and two places on the front and rear sides (two places in the left and right directions and two places in the front and rear directions as viewed from the student H with the collar portion 22 facing forward). A path tag detection antenna 4 </ b> A composed of a flat antenna is attached as a part of the portable reader 1. The four path tag detection antennas 4A are connected to the antenna switch circuit 341 of the tag communication control unit 15 of the portable reader 1 via the antenna cord 23, respectively. Further, in the vicinity of the portable reader 1, one personal belongings tag detection antenna 4 </ b> B that is also constituted by a planar antenna is connected to the antenna switch circuit 341 by one antenna cord 23.

  As described above, the four path tag detection antennas 4A and the one belonging tag detection antenna 4B are configured by the same planar antenna in this example, and these constitute the tag detection antenna 4. Further, the antenna switch circuit 341 switches between four path tag detection antennas 4A and one belonging tag detection antenna 4 in a predetermined switching mode based on a control signal from the CPU 8 (for example, a path tag detection mode as described later). , The four path tag detection antennas 4A are sequentially switched at predetermined time intervals, and in the possession tag detection mode, are switched to the possession tag detection antenna) and connected to the transmission / reception separator 214. Note that at this time, it may be configured to have frequency characteristics respectively corresponding to frequencies of carrier waves (to be described later in detail) that are used separately for the path tag Tk and the belongings tag Ts.

  By wearing the antenna-equipped cap 5 having such a configuration, the four path tag detection antennas 4A cooperate to cover the wireless communication area in almost all directions in the left and right directions around the head of the student H. be able to. In addition, the student H himself / herself holds the portable reader 1 so that the belonging tag detection antenna 4B can be positioned substantially in the center of the student H's body, and all the articles possessed by the student H are within the wireless communication area. Can fit in.

  FIG. 5 is a block diagram illustrating an example of a functional configuration of the RFID tag circuit element To provided in the path tag Tk and the belongings tag Ts that are the detection targets of the portable reader 1.

  In FIG. 5, the RFID circuit element To includes a tag-side antenna 151 that transmits and receives signals in a contactless manner with the tag detection antenna 4 of the portable reader 1 using a frequency such as a UHF band and a microwave band. The IC circuit unit 150 is connected to the tag-side antenna 151.

  The IC circuit unit 150 includes a rectifying unit 152 that rectifies the carrier wave received by the tag-side antenna 151, a power source unit 153 that accumulates energy of the carrier wave rectified by the rectifying unit 152, and serves as a driving power source. A clock extraction unit 154 that extracts a clock signal from a carrier wave received by the side antenna 151 and supplies the clock signal to a control unit (described later) 157; a memory unit 155 that functions as an information storage unit that can store a predetermined information signal; A modulation / demodulation unit 156 connected to the tag-side antenna 151, and a control unit 157 for controlling the operation of the RFID circuit element To through the rectification unit 152, the clock extraction unit 154, the modulation / demodulation unit 156, and the like. ing.

  The modem 156 demodulates the communication signal received from the tag detection antenna 4 of the portable reader 1 received by the tag side antenna 151 and receives from the tag side antenna 151 based on the return signal from the control unit 157. The modulated carrier wave is modulated and retransmitted as a reflected wave from the tag-side antenna 151.

  The control unit 157 interprets the received signal demodulated by the modulation / demodulation unit 156, generates a return signal based on the information signal stored in the memory unit 155, and performs basic control such as returning by the modulation / demodulation unit 156. Execute proper control.

  The clock extraction unit 154 extracts a clock component from the received signal and extracts the clock to the control unit 157, and supplies a clock corresponding to the speed of the clock component of the received signal to the control unit 157.

  Further, the route tag Tk and the belonging tag Ts store the route tag ID and the belonging tag ID, which are their own identification information, in the respective memory units 155, and the route tag ID and the belonging tag ID are the route tag Tk. And the data tag Ts can be distinguished from each other.

  As described above, the most significant feature of the present embodiment is that, based on the wireless tag information of the route tag Tk detected by the portable reader 1 when the student H moves on the school route, abnormality of the moving route and moving time is determined, It is to be able to notify. Hereinafter, the details will be sequentially described.

  FIG. 6 is a diagram illustrating an arrangement relationship between the route tag Tk (passage detection point) and the correct school route of the student H in the example of the present embodiment.

  In this example of FIG. 6, in the wide area including the school route R from the home to the school, the 12 passage detection points numbered (1) to (12) are all on the road. A branch point (all crosses in the illustrated example) is set, and the route tag Tk is provided. For example, the passage detection points to which the route tags Tk are affixed may be arranged at a sufficient distance so that a plurality of route tags Tk are not detected simultaneously within the communication range of one portable reader 1. The place where the passage detection point is set is not limited to the branch point of the road, and may be set in the middle of the road as long as the passage detection point is sufficiently separated from the other passage detection points as described above. And in this example, when the student H goes to school from home, the school route R is (10) (home), (7), (8), (5), (2), (3) ( It is assumed that the setting is registered in advance (described later) in the movement route that passes in the order of the passage detection points of school.

  Next, the registration route table stored in the memory 9 of the portable reader body 7 will be described. FIG. 7 is a registered route table stored in the memory 9 of the portable reader body 7 and is a diagram conceptually showing an example in which route tag information corresponding to the school route R shown in FIG. 6 is registered.

  The registered route table of the example shown in FIG. 7 has a tag ID (route tag) of the route tag Tk attached to each passage detection point corresponding to the order (passing order number) of passage detection points passing through the movement route. ID), the name of the place where each passing detection point is set (passing point name), and the time required for normal movement from the previous passing detection point to the passing detection point (passing required time) is stored. It is configured in the form of correlation information. As will be described later, the accumulated required time and the passage time may be used instead of the passage time between points.

  In this example, as described above, the passage detection points corresponding to the passage order numbers 1 to 6 are (10), (7), (8), (5), (2), ( 3) Passing detection points in (passing order), and the passing point names are also the names of the places where they are set. And as for the time required for passage, corresponding to each passage detection point, the passage through the passage detection point is the (N-1) th when the order of passage is the Nth, that is, the passage passed one before. The time required for the student H to actually walk and arrive from the detection point to the passage detection point (standard time that would be required in normal walking) is stored. Specifically, the relative time difference normally required from when the (N-1) th route tag Tk is detected by the portable reader 1 until the current Nth route tag Tk is detected (in this example, 5 seconds). (Unit) is preset and registered as the Nth required time for passing.

  In the figure, only the contents of the outbound route at the time of attending school are shown, but the return route at the time of leaving the school, the order of passage is reversed, and the content of the required travel time is one for each destination (home) side. Move it.

  FIG. 8 is a flowchart showing a control procedure of processing executed by the CPU 8 of the portable reader 1. The flow shown in FIG. 8 is started when the portable reader 1 is turned on.

  In FIG. 8, first, in step S10, it is determined whether or not an instruction to perform route monitoring processing is input from the operation unit 10. If there is an instruction input for performing the route monitoring process, the determination in step S10 is satisfied and the process proceeds to the route monitoring process in step S100. If there is no instruction input for performing the route monitoring process, the determination in step S10 is not satisfied. The process proceeds to the route registration process in step S200.

  In the route monitoring process, while the student H is going to school, the portable reader 1 always detects the route tag Tk and monitors whether the correct route to the school route R is moving according to the scheduled time. This is a process of monitoring whether or not M is held (whether it is lost or stolen). Also, the route registration process is to register the route tag ID and the required time to be normally detected in the registered route table in the order of passage by actually moving the student H along the correct school route R at a normal moving speed. It is processing to do.

  When step S100 or step S200 is executed, this flow is terminated.

  FIG. 9 is a flowchart showing a detailed procedure of the route monitoring process (corresponding to the route tag detection mode described above) in step S100.

  In FIG. 9, first, in step S105, a counter variable N corresponding to the passing order is initially set to 1, and the process proceeds to the next step S110.

  In step S110, the route tag Tk is detected via the four route tag detection antennas 4A attached to the hat 5 with an antenna. Specifically, as described above, the interrogation wave is generated by modulating the carrier wave with a signal (for example, “Scroll All ID” signal, “Ping” signal, etc.) that prompts the route tag Tk to return the route tag ID. Then, the interrogation wave is sequentially transmitted from each of the path tag detection antennas 4A (with appropriate switching by the antenna switch circuit 341 as described above), and the response wave (including the path tag ID) in response thereto is received. To read the route tag ID.

  Next, the process proceeds to step S115, whether or not the route tag ID is read by the route tag ID reading operation in step S110, and if the route tag ID is read, the route tag ID is passed in the registered route table in the order of passage number. Is equal to the route tag ID corresponding to the counter variable N (hereinafter referred to as the Nth route tag ID).

  When the Nth route tag ID (here, the value of the counter variable N is 1, it becomes the route tag ID of the route tag Tk of the passing detection point (10) in front of the home which is the starting point) The determination is satisfied, that is, it is considered that the student H has left the home and started attending school, and the process proceeds to the next step S120. On the other hand, if the corresponding route tag Tk is not detected, the determination is not satisfied, that is, it is considered that the student H has not yet started attending school, the process returns to step S110, and the same procedure is repeated to wait.

  In step S120, the value of the counter variable N is incremented by 1. After the timer 12 is reset in the next step S125, time measurement is started.

  Next, the process proceeds to step S130. After the route tag ID of the route tag Tk is read by the same control as in step S110, a new route tag ID (a route tag ID different from the one read last time) is detected in step S135. It is determined whether or not. When the route tag ID is detected, the determination is satisfied, that is, it is considered that the student H has arrived at the next passage detection point, and the process proceeds to the next step S140.

  In step S140, it is determined whether or not the route tag ID deemed to have been detected in the determination in step S135 matches the Nth route tag ID in the registered route table. If the detected route tag ID matches the Nth route tag ID, the determination is satisfied, that is, it is considered that the student H has moved on the correct moving route up to this point, and the process proceeds to the next step S145.

  In step S145, it is determined whether or not the time measured by the timer 12 at that time is within the Nth required passage time in the registered route table. If it is within the required travel time, the determination is satisfied, that is, it is considered that the student H is moving past a predetermined passing detection point as scheduled, and the process proceeds to the next step S150.

  In step S150, the route tag ID of the route tag Tk affixed to the passage detection point (3) at the destination (the intersection in front of the school) is the route tag ID (the last route) that is considered to have been detected in the determination in step S135. Tag ID), specifically, whether or not the value of the counter variable N is 6 (or it may be a match determination between the detected route tag ID and the last 6th route tag ID). judge. When the value of the counter variable N is 6, the determination is satisfied, that is, the student H arrives at the destination and it is considered that the attendance monitoring is unnecessary, and this flow is finished. If the value of the counter variable N is not 6, the determination is not satisfied, that is, it is considered that the student H has not yet arrived at the destination and the attendance monitoring is still necessary, and the process returns to step S120 and the same procedure is repeated.

  On the other hand, if the route tag ID is not detected in the determination in step S135, the determination is not satisfied, that is, it is considered that the student H has not yet arrived at the next passage detection point, and the process proceeds to step S155.

  In step S155, it is determined whether or not the time measured by the timer 12 at that time is within the Nth required time for passage in the registered route table. If it is within the required travel time, the determination is satisfied, and the process returns to step S130 and the same procedure is repeated. On the other hand, if the time measured by the timer 12 at that time exceeds the required time for passage, the determination is not satisfied, that is, it is considered that the student H may have stopped or delayed due to an accident or the like. Then, the process proceeds to step S160.

  In step S160, the display unit 11 of the portable reader 1 displays the (N-1) th passing point name as the nearest passing detection point along with a display for notifying an abnormality in the attending school situation, and the notification sound is generated from the speaker 13. To notify the student H and the surrounding people of the abnormality.

  Next, the process proceeds to step S165, and a notification signal including the (N-1) th passing point name is transmitted to the relay station 2 by long-distance wireless communication via the communication antenna 6 (illustrated only conceptually in FIG. 2). This flow is finished. Although the detailed procedure is not shown, the relay station 2 that has received the notification signal transmits the notification signal as it is to the home contact PC 3 via the network line, and the contact PC 3 displays the notification screen (passage) on the display unit 11. (Including information about the point name) and the sound of the notification sound are performed to notify the parents of the home of the abnormal state of student H's attending school.

  On the other hand, in the determination in step S140, if the route tag ID considered to have been detected in the determination in step S135 does not match the Nth route tag ID, the determination is not satisfied, that is, student H has mistaken the route. It is considered that an abnormal commuting situation including the case or the occurrence of an accident has occurred, and the process proceeds to the notification process in steps S160 and S165. In this case, as the information on the notification screen to be displayed on the display unit 11 of the portable reader 1 and the contact PC 3, the passing point name (the portable reader 1 and the contact information corresponding to the route tag ID detected in the determination of step S135). All route tag IDs other than those registered in the registered route table and corresponding passing point names in the PC 3 may be stored in advance. In particular, the route tag ID of the route tag Tk of the passage detection point located in the vicinity of the school route R is separately registered as a side road route tag ID, and when these are detected, the student H enters the side road by the notification process. You may make it alert | report as a thing.

  On the other hand, in the determination in step S145, if the time measured by the timer 12 at that time exceeds the N-th required time for passage in the registered route table, the determination is not satisfied, that is, the student H has an accident or the like. It is considered that the abnormal state of school attendance has occurred, and the process proceeds to the notification processing in steps S160 and S165. In this case, the information on the notification screen displayed on the portable reader 1 and the display unit 11 of the contact PC 3 indicates how much time has passed since the student H passed the previous passage detection point. The time measured by the timer 12 may be included.

  FIG. 10 shows an interrupt belongings monitoring process (corresponding to the above-mentioned belongings tag detection mode described above) executed by the CPU 8 that can monitor the possessing state of the belongings M of the student H while monitoring the moving route of the student H. It is a flowchart showing the detailed procedure of). That is, when the route monitoring process of FIG. 9 is operating, the interrupt possession item monitoring process of FIG. 10 is also operating in parallel at the same time. It can be made to be performed by one CPU 8 by a known method similar to “multitask processing” often performed by an OS or the like).

  In FIG. 10, first, in step S305, all the possession tag Ts possessed by the student H is detected via the possession tag detection antenna 4B, and these possession tag IDs are read and stored. Specifically, as described above, the carrier wave is modulated by the signal that prompts the personal belongings tag Ts to return the personal belongings tag ID, and the interrogation wave is generated. Then, (after switching by the antenna switch circuit 341 as described above), this interrogation wave is transmitted from the possession tag detection antenna 4B, and all response waves (including the possession tag ID) responding thereto are transmitted. The received tag ID is read by receiving it. Then, all the read belonging tag IDs are registered, and the process proceeds to the next step S310.

  In step S310, only the possession tag IDs of all possession tag Ts are read by the same control as in step S305, and the process proceeds to step S315.

  In step S315, it is determined whether or not all the personal belongings tag IDs registered in step S305 have been read in step S310. If all registered personal belongings tag IDs are read, the determination is satisfied, that is, all personal possessions possessed by student H (those possessing personal belongings tags Ts) are normal without being lost or stolen. It is assumed that the possessed state is maintained, and the process returns to step S310 and the same procedure is repeated.

  On the other hand, if one of the registered personal belongings tag IDs cannot be read, the determination is not satisfied, that is, the personal belongings M corresponding to the personal belongings tag ID that could not be read may have been lost or stolen. In step S320, a notification screen is displayed on the display unit 11 of the portable reader 1, and a notification sound is generated from the speaker 13 to notify the student H of an abnormality in the possessed state of the possessed item M. Exit. Note that the notification information displayed on the display unit 11 may include an article name corresponding to an inventory tag ID that could not be read (assuming that article names corresponding to all the inventory tag IDs are stored in advance). . In addition, regarding the abnormality in the possessed state, a notification signal may be transmitted to the relay station 2 via the communication antenna 6 so as to be notified to the home contact PC 3.

  FIG. 11 is a flowchart showing the detailed procedure of the route registration process in step S200, which is executed when registering the correct movement route and the scheduled time for passing through each passing detection point in the portable reader 1. When this route registration processing is performed, while the portable reader 1 is held by the student H, the parents and the like are accompanied by the student H and guided to the correct movement route, and are actually moved to the student H (actually The school route R is moved (at the moving speed of the student H).

  In FIG. 11, first, in step S205, the counter variable N is initialized to 1, and the process proceeds to the next step S210.

  In step S210, after the route tag ID of the route tag Tk is read by the same control as in step S110, it is determined in the next step S215 whether or not the route tag ID has been read. Then, the process proceeds to the next step S220, and if it cannot be read, the same procedure is repeated until the determination is not satisfied and the process returns to step S210 and can be read.

  In step S220, the route tag ID considered to have been detected in step S215 is converted into the Nth route tag Tk (here, since the value of the counter variable N is 1, the passing detection point in front of the home that is the starting point ( It is registered in the registered route table as a route tag ID of 10). At this time, if the passing point name corresponding to the route tag ID is registered in the memory 9 of the portable reader 1, the passing point name corresponding to the route tag ID may be stored in the registered route table at the same time as detecting the route tag ID. Alternatively, a corresponding passing point name may be registered by an input from the operation unit 10 after the route registration process is completed. Alternatively, the passing point name may be stored in each route tag Tk, and the passing point name may be read simultaneously with the reading of the route tag ID. In this initial registration, the transit time is not registered.

  In step S225, the counter variable N is incremented by 1. After the timer 12 is reset in the next step S230, time measurement is started.

  Next, the process proceeds to step S235, and after reading the route tag ID of the route tag Tk by the same control as in step S110, the steps S235 and S240 are performed until it is determined in step S240 that the route tag ID is detected. repeat. If the route tag ID is detected, the determination in step S240 is satisfied, that is, it is considered that student H has arrived at the next passage detection point, and in the next step 255, the Nth route tag ID is entered in the registered route table. At the same time, the time measured by the timer 12 at that time is registered as the Nth required time for passage.

  Next, the process proceeds to step S260, and it is determined whether or not an operation for instructing the end of the route registration process is input from the operator via the operation unit 10 of the portable reader 1. If the end instruction operation is not input, the determination is not satisfied, that is, it is assumed that the student H is still in the middle of the school route R, and the process returns to step S225 to repeat the same procedure. On the other hand, if an operation of an end instruction is input, the determination is satisfied, that is, it is considered that the student H has arrived at the destination and registration of the movement route is unnecessary, and the flow is ended.

  In the above, the route tag detection antenna 4A and the procedure of step S110 and step S130 in the flow of FIG. 9 executed by the CPU 8 via the tag communication control unit 15 are the route tag Tk via wireless communication according to each claim. A first information acquisition unit that can acquire the route tag ID at a plurality of different timings is configured.

  Further, the procedure of step S115 and step S135 in the flow of FIG. 9 functions as a first movement route calculation unit that calculates the movement route of the student H based on the acquired information acquisition results at a plurality of different timings.

  Further, the procedure of Step S140, Step S145, and Step S155 in the flow of FIG. 9 functions as a route determination unit that determines the coincidence between the detected route of the student H and a predetermined route.

  In addition, the procedure of step S160 and step S165 in the flow of FIG. 9 functions as a route abnormality signal output unit that outputs a signal for notifying a route abnormality in accordance with the determination of student H's route consistency.

  The procedure of step S220 and step S255 in the flow of FIG. 11 functions as a route setting means for setting and storing the detected route of the student H as a predetermined route that the student H should originally pass.

  In the present embodiment configured as described above, a route tag Tk is provided for a plurality of objects provided at different positions in the movement route, and the portable reader 1 is carried on the student H side. When the student H moves, information is sequentially acquired by a plurality of route tags Tk via the route tag detection antenna 4A as the student H moves, and step S115 and step in the flow of FIG. 9 are performed according to the acquisition results. The moving path of the student H is detected by the procedure of S135.

  As described above, as the student H moves, the information is sequentially acquired a plurality of times between the route tag Tk and the portable reader 1, and the route is detected. Can be reliably detected and grasped. In addition, the moving body is not limited to the student H, and for example, a cash transport vehicle may be used as a moving body (in this case, a case for storing cash or the like is a possessed item), behavior management of a criminal elderly person, etc. It is also suitable for application.

  In the embodiment described above, in particular, the route of the student H (route tag ID information) detected by the procedure of steps S115 and S135 in the flow of FIG. 9 and a predetermined route (school route R) determined in advance. The coincidence (including partial coincidence) is determined by the procedures of step S140, step S145, and step S155. By determining whether or not the predetermined route is coincident with the predetermined route as described above, it is possible to detect whether or not the student H has mistakenly deviated from the predetermined route. In addition, the route tag ID detected by the portable reader 1 is always transmitted to the home contact PC 3 via the relay station 2, and the contact PC 3 is connected to the predetermined route based on the information of the route tag ID. You may make it judge a coincidence mismatch.

  In this embodiment, in particular, the route tag ID detected by the procedure of step S135 in the flow of FIG. 9 is the route tag ID of the route tag Tk arranged in a region other than the predetermined school route R. In step S140, it is determined that the route does not match the correct route R. As a result, if the information is acquired from the route tag Tk that should not be transmitted / received if the correct school route R is followed, it can be reliably detected that the route has deviated from the predetermined route.

  Further, in this embodiment, in particular, according to the time when the procedure of step S130 in the flow of FIG. 9 reads the route tag ID, the procedure of steps S145 and S155 determines whether the school route R is correct. . This ensures that if the route tag ID is read at a time different from the time it would have passed if the correct school route R was followed at normal speed, this (at least partially) deviated from the predetermined route. Can be detected. In the above embodiment, the required travel time, which is a relative time difference required for movement between the passage detection points, is registered in the registered route table, but the present invention is not limited to this. That is, for example, the accumulated required time from the first departure to each passage detection point (the accumulated time in the passage required time column in FIG. 7 increases for each passage sequence number), or each passage on that day An absolute time (for example, 15:35) scheduled to pass through the detection point may be registered instead of the time required for passing, and based on these, the temporal consistency of the route movement may be determined. For example, when the mobile body is a cash transport vehicle, the movement is managed at the scheduled passage time, which is preferable.

  Further, in this embodiment, in particular, in the procedure of step S140, step S145, and step S155 in the flow of FIG. 9, the consistency with the correct school route R according to the time order (passing order) in which the route tag IDs are read. Judging. As a result, when the route tag IDs are read in an order different from the passage order when the correct school route R is traced, it is possible to reliably detect (at least partially) that the route tag ID has deviated from the predetermined route. It becomes possible to take the correspondence.

  In this embodiment, in particular, the procedure of step S160 and step S165 in the flow of FIG. 9 is performed according to the determination of the coincidence of the moving route of student H performed by the procedure of step S140, step S145, and step S155. By outputting a signal for notifying abnormality, it can be notified and recognized that the student H is out of the correct school route R.

  Further, in this embodiment, in particular, the moving path of the student H detected by the procedure of step S215 and step S240 in the flow of FIG. It is set by the procedure of step S255 and stored in the registered route table. As a result, the student H is actually moved in advance and the route is detected along the route, and this is stored as the correct school route R. Thereafter, the stored and held correct school route R is stored. A path abnormality can be determined based on the coincidence. Note that parents and the like may manually input a route tag ID and a passing point name via the portable reader 1 or the operation unit 10 of the contact PC 3 to set and register the registered route table.

  In this embodiment, in particular, the route tag detection antenna 4A of the portable reader 1 is provided on the ring belt 21 with a substantially ring-shaped antenna that can be attached to the human body of the student H. In 4A, the route detection can be performed by sequentially acquiring the route tag Tk and information a plurality of times according to the movement of the human body.

  In this embodiment, in particular, the antenna 4A for detecting a path tag provided on the ring belt 21 with an antenna has at least two positions (one of the ring belt 21 with an antenna and the other side of the ring belt 21 with an antenna in a state of being attached to a human body (this In the example, it is provided at 4 locations). Thereby, even if the direction of the ring belt 21 with the antenna changes due to the movement of the human body or the change of the posture, at least one of the two path tag detection antennas 4A can be reliably communicated. , Reliability in detection can be improved.

  The accessory for attaching the path tag detection antenna 4A is not limited to the hat (see FIG. 4) as in the above embodiment. For example, as shown in FIG. The same effect can be obtained with the belt 32 with an antenna having a configuration in which four path tag detection antennas 4A are provided on the outer peripheral surface (front, rear, left and right) as members. Further, the arrangement of providing the route tag detection antenna 4A is not limited to the four places in the front-rear and left-right directions at the time of mounting as described above, and may be provided in two places in the left-right direction and two places in the front-rear direction. . In any case, it is preferable that they are provided in a substantially uniform arrangement in the outer circumferential direction of the ring-shaped member.

  The belt 32 with an antenna shown in FIG. 12 includes a tongue 34 and a buckle 35 that are coupled and separated when the belt is attached to and detached from the human body. There is provided a switch mechanism (communication switching means; not shown in particular) which is converted into general switching and transmitted to the portable reader 1 via the switch cord 36. The portable reader 1 switches between enabling and disabling wireless communication with the path tag Tk in response to detection of attachment / non-attachment of the antenna-equipped belt 32 based on a signal from the switch mechanism (for example, the belt 32 is not attached). In the state, the power of the portable reader 1 is turned off, the energization to the tag communication control unit 15 is turned off, the carrier wave is not output from the VCO 215C, the amplification factor of the variable transmission amplifier 217 is 0, the antenna switch 341 is The transmission / reception separator 214 is not connected to any of the antennas 4A and 4B). This makes it possible to invalidate the communication function when the human body is not worn, so that power can be saved or unnecessary communication interference can be prevented.

  Further, as shown in FIG. 13, the entire belt body 38 of the antenna-equipped belt 37 may be configured as an annular member made of an elastic member such as rubber. In this case, four path tag detection antennas 4A are installed. It is preferable to provide a shield member (shield means) 39 for reducing the communication signal intensity on the entire back surface opposite to the surface on which it is located. As a result, when the belt 37 with antenna is used reversibly (the front and back surfaces are reversed and used), and when the four path tag detection antennas 4A are used so as to be exposed on the outer surface, the path tag Tk is detected. When the four path tag detection antennas 4A are inserted between the human body and the shield member 39 and turned over, the path tag Tk is not detected. As a result, the range of usage modes of the user is widened, and usability can be improved.

  The present invention is not limited to the above, and various modifications can be made without departing from the spirit and technical idea of the present invention. Hereinafter, such modifications will be described in order.

(1) When a wireless tag carried by a student is detected by a reader installed in the movement route In the above embodiment, the portable reader 1 carried by the student H as a moving object is used as a passage detection point in the movement route. The attached route tag Tk is detected and the movement state is monitored based on the route tag ID. However, the present invention is not limited to this. For example, the student H is held by the reader installed at the passage detection point in the movement route. You may make it detect the made radio tag.

  FIG. 14 is a system configuration diagram showing an overall outline of the school attendance status monitoring system according to this modification, and corresponds to FIG. 1 of the above embodiment. In addition, about the structure equivalent to the said embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted suitably (hereinafter, it is the same also about each figure).

  In FIG. 14, the school attendance status monitoring system S2 according to the present modification includes a person tag (second wireless tag) Tj affixed to a hat 103 worn by a student (moving body) H, and the student H's school route. A plurality of fixed readers (wireless tag information reading devices) 101 installed at predetermined positions in the region including R, and detection signals from a plurality of fixed readers 1 installed in a management organization, for example, via a dedicated network EN. The central management device 102 is connected so as to be receivable, and the central management device 102 is installed in the home of the student H and is connected to the communication PC 3 connected to be able to receive the notification signal via the wide area network WN. Yes.

  The student H wears a hat 103 with a tag in which a plurality of person tags Tj are attached to the outer periphery (see FIG. 16 described later), and the person tag Tj is received by the fixed reader 101 via a wireless communication such as a person tag ID. Information can be read.

  FIG. 15 is a system configuration diagram showing an outline of the school attendance status monitoring system S2, and corresponds to FIG. 2 in the embodiment. In FIG. 15, this school attendance status monitoring system S2 includes a plurality of person tags Tj affixed to the tagged hat 103 worn by the student H as described above, and fixed readers installed at a plurality of passage detection points. 101, a central management apparatus 102 connected to each fixed reader 101 via a dedicated network EN, and a contact PC 3 connected to the central management apparatus 102 via a wide area network WN.

  The fixed reader 101 includes a tag detection antenna 4 and a fixed reader main body 104. The fixed reader body 104 includes a dedicated network communication control unit 105 that controls transmission and reception of control signals and information signals with the CPU 8 and the central management apparatus 102 via the dedicated network EN, a memory 9, and a tag communication control unit 15. (However, the above-described antenna switch circuit 341 is omitted).

  The central management device 102 includes a CPU 8, a memory 9, a timer 12, a wide area network communication control unit 106 that controls transmission and reception of information signals with the home contact PC 3 via the wide area network WN, and the dedicated network. A dedicated network communication control unit 105 that controls transmission / reception of control signals and information signals to / from the plurality of fixed readers 101 via the EN, and a mass storage device 107 such as a hard disk device are provided.

  The large-capacity storage device 107 includes fixed reader IDs that are identification information of the fixed readers 101 and various information corresponding to them (passage point names of passage detection points where they are installed), and identification information of the person tag Tj. A database for storing a person tag ID and a corresponding registration route table is constructed.

  The person tag Tj has the same configuration as the path tag Tk and the belongings tag Ts in the above embodiment, and performs wireless communication with the fixed reader 101 at a predetermined frequency (for example, UHF band). Therefore, the tag-side antenna 151 may be configured by a coil antenna provided with a loop coil, a dipole antenna in which a plurality of antenna elements are arranged substantially linearly, or a substantially planar planar antenna. The memory unit 155 stores a person tag ID that is identification information of itself.

  FIG. 16 is a diagram showing the tagged hat provided with the person tag Tj, and corresponds to FIG. 4 described above. Parts equivalent to those in FIG. 4 are denoted by the same reference numerals.

  In FIG. 16, the tag-attached cap 103 has a structure similar to that of the antenna-attached cap 5, and a tag-attached ring belt (substantially ring-shaped member) 321 is provided on the outer periphery thereof. The person tags Tj are attached (in this example, at equal intervals) to a total of four places, two on the left and right sides of the ring belt 321 with tags and two places on the front and rear.

  The four person tags Tj have the person tag IDs that are mostly common and only partly different (for example, the last one bit) are different from each other. As a result, the question specifying the ID of the common part All four person tags Tj are configured to be able to respond at once by receiving a wave (inquiry signal).

  By wearing the tag-equipped hat 103 having such a configuration, the person tag Tj can cooperate to cover the wireless communication area in almost all directions in the front-rear direction, centering on the head of the student H.

  The person tag Tj is not limited to the hat 103 with a tag. For example, as shown in FIG. 17 (corresponding to the above-described FIG. 12), the belt main body 31 has a substantially ring-shaped member on its outer peripheral surface (front and rear, left and right) The same effect can be obtained with the belt 332 with a tag provided with the person tag Tj. In this case, as described above, a switch mechanism for switching the insertion / removal state of the tongue 34 is provided in the buckle 35 of the belt 332 with a tag, and the radio of the person tag Tj is detected according to the detection of the wearing or non-wearing of the belt 332. Communication validation / invalidation may be switched (for example, a part of the circuit in the RFID tag circuit element of the person tag Tj is cut off, the power supply is turned off, etc.). This makes it possible to invalidate the communication function when the human body is not worn, so that power can be saved or unnecessary communication interference can be prevented.

  Further, at this time, as described above with reference to FIG. 13, the shield for reducing the communication signal strength on the entire back surface opposite to the surface where the person tag Tj is installed in the entire belt main body of the belt 332 with the tag. A member (shielding means) may be provided. As a result, when the belt 332 with a tag is used reversibly (the front and back surfaces are reversed and used), the person tag Tj can be detected when used with the person tag Tj exposed to the outer surface, When the person tag Tj is turned upside down and sandwiched between the human body and the shield member, the person tag Tj can be made undetectable, so that the range of usage modes of the user is widened and user-friendliness. Can be improved.

  In addition, the arrangement for providing the person tag Tj in the configuration shown in FIGS. 16 and 17 is not limited to the four places in the front-rear and left-right directions at the time of wearing as described above, but two places in the left-right direction and two places in the front-rear direction. You may make it provide in. In any case, it is preferable that they are provided in a substantially uniform arrangement in the outer circumferential direction of the ring-shaped member.

  FIG. 18 is a diagram conceptually showing a registered route table stored in the large-capacity storage device 107 of the central management device 102 according to this modification, and corresponds to FIG. 7 of the above embodiment. The stored content is an example in which the fixed reader information corresponding to the school route R shown in FIG. 6 of the above embodiment is registered.

  The registered route table of the example shown in FIG. 18 stores the fixed reader ID of the fixed reader 101 installed at each passing detection point instead of the route tag ID as compared with the registered route table shown in FIG. Is different. The large-capacity storage device 107 stores this registered route table corresponding to the person tag ID to be monitored. Note that, as described above, the accumulated required time and the passing time may be used instead of the required passing time between points.

  FIG. 19 is a flowchart showing a control procedure of processing executed by the CPU 8 of the fixed reader 101. The flow of FIG. 19 is started when the power of the fixed reader 101 is turned on.

  In FIG. 19, first, in step S405, the tag detection antenna 4 (in this example, for the path tag detection) is controlled by the same control as in step S110 of FIG. 9 in the above embodiment (however, there is no switching operation by the antenna switch circuit 341). The person tag Tj is detected via the antenna 4A or the personal belongings tag detection antenna 4B). Specifically, as described above, the common part is designated among the person tag IDs of the four person tags Tj, and a signal (for example, “Scroll All ID” signal, “Ping” signal, etc.) for prompting a reply is used as a carrier wave. To generate a question wave. Then, the interrogation wave is transmitted from the tag detection antenna 4 and a response wave (including the person tag ID) in response thereto is received to read the person tag ID.

  Next, the process proceeds to step S410, and it is determined whether or not the person tag ID of the person tag Tj to be monitored has been read. If the person tag ID to be monitored is not detected, the determination is not satisfied and the process returns to step S405, and the procedures of step 405 and step S410 are repeated until the person tag ID to be monitored is detected. On the other hand, when the monitoring target person tag ID is detected, the determination is satisfied, that is, the monitoring target student H is regarded as having arrived at the passage detection point where the fixed reader 101 is installed, and the next step S415. Move on.

  In step S415, the person tag ID detected together with the fixed reader ID set in its own fixed reader 101 is transmitted to the central management apparatus 102 via the dedicated network EN.

  Next, the process proceeds to step S420, where it is determined whether or not an end instruction operation has been performed by the operator (system administrator). If the end operation has not been performed, the determination is not satisfied and the process proceeds to step S405. If the same procedure is repeated and an end operation is performed, the determination is satisfied and this flow is ended.

  FIG. 20 is a flowchart showing a control procedure of processing executed by the CPU 8 of the central management apparatus 102, and corresponds to FIG. 9 in the embodiment. In this modification, the route registration process in the above embodiment is not performed, and only the route monitoring process is performed. The flow in FIG. 20 is started when the central management apparatus 102 is powered on.

  In FIG. 20, first, in step S505, the value of the counter variable N corresponding to the passing order is initialized to 1, and the process proceeds to the next step S510.

  In step S510, it is determined whether or not a person tag ID to be monitored has been received from the fixed reader 101 corresponding to the Nth fixed reader ID in the registered route table. The person tag to be monitored together with the Nth fixed reader ID (here, since the value of the counter variable N is 1, it becomes the fixed reader ID of the fixed reader 101 at the passing detection point (10) in front of the home which is the starting point) When the ID is detected, the determination is satisfied, that is, it is considered that the student H has left the home and started attending school, and the process proceeds to the next step S515. On the other hand, when the corresponding fixed reader ID is not detected, the determination is not satisfied, that is, it is considered that the student H has not yet started attending school, and the detection procedure of step S510 is repeated and waits.

  In step S515, the value of the counter variable N is incremented by 1, and after the timer 12 is reset in the next step S520, time measurement is started.

  Next, the process proceeds to step S525, and it is determined whether or not the person tag ID to be monitored is received together with the fixed reader ID from any of the fixed readers 101 installed. When the fixed reader ID and the monitored person tag ID are received, the determination is satisfied, that is, it is considered that the student H has arrived at the passage detection point corresponding to the fixed reader ID, and the process proceeds to the next step S530. .

  In step S530, it is determined whether or not the fixed reader ID considered to have been detected in the determination in step S525 matches the Nth fixed reader ID in the registered route table. If the detected fixed reader ID matches the Nth fixed reader ID, the determination is satisfied, that is, it is considered that the student H has moved on the correct moving path up to this point, and the process proceeds to the next step S535.

  In step S535, it is determined whether or not the time measured by the timer 12 at that time is within the Nth required passage time in the registered route table. If it is within the required travel time, the determination is satisfied, that is, it is considered that the student H is moving past a predetermined passage detection point as scheduled, and the process proceeds to the next step S540.

  In step S540, the fixed reader ID that is considered to have been detected in the determination in step S525 is the fixed reader ID (last route) of the fixed reader 101 installed at the passage detection point (3) at the destination (the intersection in front of the school). Tag ID), specifically, whether or not the value of the counter variable N is 6 (or a match determination between the detected fixed reader ID and the last fixed reader ID may be performed). judge. When the value of the counter variable N is 6, the determination is satisfied, that is, the student H arrives at the destination and it is considered that the attendance monitoring is unnecessary, and this flow is finished. If the value of the counter variable N is not 6, the determination is not satisfied, that is, it is considered that the student H has not yet arrived at the destination and the attendance monitoring is still necessary, and the process returns to step S515 and the same procedure is repeated.

  On the other hand, if the fixed reader ID and the monitored person tag ID are not detected in the determination in step S525, the determination is not satisfied, that is, it is considered that the student H has not yet arrived at the next passage detection point. Then, the process proceeds to step S545.

  In step S545, it is determined whether or not the time measured by the timer 12 at that time is within the Nth required passage time in the registered route table. If it is within the required travel time, the determination is satisfied, and the process returns to step S525 to repeat the same procedure. On the other hand, if the time measured by the timer 12 at that time exceeds the required time for passage, the determination is not satisfied, that is, it is considered that the student H may have stopped or delayed due to an accident or the like. Then, the process proceeds to step S550.

  In step S550, a notification signal including the (N-1) th passing point name as the nearest passing detection point is transmitted to the home contact PC 3 via the wide area network WN, and this flow is ended. Although the detailed procedure is not shown, the home contact PC 3 that has received the notification signal causes the display unit 11 to display a notification screen (including information about the passing point name) and to generate a notification warning sound. Notify parents of the family about abnormalities in student H ’s attendance at school.

  On the other hand, in the determination in step S530, if the fixed reader ID considered to have been detected in the determination in step S525 does not match the Nth route tag ID, the determination is not satisfied, that is, the student H has mistaken the route. It is considered that an abnormal commuting situation including a case or occurrence of an accident has occurred, and the process proceeds to a notification process in step S550.

  On the other hand, if it is determined in step S535 that the time measured by the timer 12 at that time exceeds the N-th required time for passage in the registered route table, the determination is not satisfied, that is, the student H has an accident or the like. It is considered that an abnormal school attendance has occurred, and the process proceeds to a notification process in step S550.

  In the above, the tag detection antenna 4 and the procedure of step S405 in the flow of FIG. 19 executed by the CPU 8 of the fixed reader 101 via the tag communication control unit 15 obtain the person tag ID from the person tag Tj via wireless communication. Second information acquisition means for doing this is configured.

  In addition, the procedure of step S510 and step S525 in the flow of FIG. 20 executed by the CPU 8 of the central management apparatus 102 calculates the movement path of the student H based on the information acquisition result from the fixed reader 101 arranged at different positions. It functions as a second movement route calculation means.

  Further, the procedure of Step S530, Step S535, and Step S545 in the flow of FIG. 20 functions as a route determination unit that determines the coincidence between the detected route of the student H and a predetermined route.

  In addition, the procedure of step S550 in the flow of FIG. 20 causes the route abnormality to output a signal for notifying the route abnormality in accordance with the determination of the coincidence of the route of the student H by the procedure of steps S530, S535, and S545. It functions as a signal output means.

  In this modified example configured as described above, the student H side has the person tag Tj, and the fixed reader 101 is attached to each of the plurality of objects serving as the reference for the movement path detection provided at different positions in the movement path. There is also provided a central management device 102 that is connected to the fixed reader 101 so as to be able to send and receive information signals. Then, when the student H moves, information is sequentially acquired from the person tag Tj of the student H using the tag detection antenna 4 of the fixed reader 101 along with the movement, and the central management apparatus 102 according to the acquisition result. Detects the route of student H.

  As described above, as the student H moves, information acquisition is sequentially performed a plurality of times between the person tag Tj and the fixed reader 101, and the route is detected by the central management device 102, thereby making it easy to use the wireless tag. It is possible to reliably detect and grasp the moving path of the moving body (student H) by a simple method.

  The “Scroll ID” signal, the “Ping” signal, and the like used above are assumed to conform to the specifications established by EPC global. EPC global is a non-profit corporation established jointly by the International EAN Association, which is an international organization of distribution codes, and the United Code Code Council (UCC), which is an American distribution code organization. Note that signals conforming to other standards may be used as long as they perform the same function.

  In addition to those already described above, the methods according to the above-described embodiments and modifications may be used in appropriate combination.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

It is a system configuration figure showing the whole outline of a school attendance situation monitoring system of an embodiment of the present invention. It is a system configuration figure showing the outline of a school attendance situation monitoring system. It is a functional block diagram showing the detailed structure of CPU in a portable reader, a tag communication control part, and a tag detection antenna. It is a figure showing the connection structure of the cap with an antenna provided with the some antenna for tag detection, and a portable reader. It is a block diagram showing an example of a functional structure of the RFID tag circuit element with which the route tag and the belongings tag were equipped. It is a figure explaining the arrangement | positioning relationship between the route tag in the example of embodiment, and the correct school route of a student. It is a figure which represents notionally the registration path | route table memorize | stored in the memory of a portable reader body. It is a flowchart showing the control procedure of the process performed by CPU of a portable reader. It is a flowchart showing the detailed procedure of the path | route monitoring process which CPU of a portable reader performs in step S100 in FIG. It is a flowchart showing the detailed procedure of the interruption possession article monitoring process which CPU of a portable reader performs. It is a flowchart showing the detailed procedure of the route registration process which CPU of a portable reader performs in step S200 in FIG. It is a figure showing the connection structure of the belt with a buckle type antenna provided with the some antenna for tag detection, and a portable reader. It is a figure showing the connection structure of the belt with a reversible type antenna provided with the some antenna for tag detection, and a portable reader. It is a system configuration figure showing the whole outline of a school attendance situation monitoring system in a modification in the case of detecting a student's person tag with a fixed reader in a movement route. It is a system configuration figure showing the outline of a school attendance situation monitoring system. It is a figure showing the hat with a tag provided with the several person tag. It is a figure showing the belt with a tag provided with the several person tag. It is a figure which represents notionally the registration path | route table memorize | stored in the mass storage apparatus of a central management apparatus. It is a flowchart showing the control procedure of the process performed by CPU of a fixed reader. It is a flowchart showing the control procedure of the process performed by CPU of a central management apparatus.

Explanation of symbols

1 Mobile reader (Radio tag information reader)
2 Relay station 3 Contact PC
4 Tag detection antenna 4A Route tag detection antenna 4B Possession tag detection antenna 5 Hat with antenna 8 CPU
12 timer 13 speaker 15 tag communication control unit 21 ring belt with antenna (substantially ring-shaped member)
31 Belt body (substantially ring-shaped member)
32 Belt with antenna 37 Belt with antenna 38 Belt body (substantially ring-shaped member)
39 Shield member (shielding means)
101 Fixed reader (wireless tag information reader)
DESCRIPTION OF SYMBOLS 102 Central management apparatus 103 Cap with tag 105 Dedicated network communication control part 106 Wide area network communication control part 332 Belt with tag S1 School attendance situation monitoring system (moving body movement route detection system)
S2 School attendance situation monitoring system (moving body movement route detection system)
H Student (moving body)
R School route Tk Route tag (first wireless tag)
Ts Personal belongings tag Tj Person tag (second wireless tag)
To RFID circuit element WN Wide area network EN Dedicated network

Claims (18)

A mobile object comprising: a plurality of first wireless tags provided at different positions in a moving path of the mobile object; and a wireless tag information reading device provided on the mobile object side for reading information of the first wireless tag. A movement path detection system,
The wireless tag information reader is
A first information acquisition unit capable of acquiring predetermined information from the first wireless tag at a plurality of different timings via wireless communication;
A first movement path calculation unit is provided that calculates a movement path of the mobile body based on information acquisition results at a plurality of different timings acquired by the first information acquisition unit as the mobile body moves. A moving path detection system for a moving body. A moving path detection system for a moving body, comprising: a second wireless tag provided on the moving body side; and a plurality of RFID tag information reading devices provided at different positions in the moving path of the moving body,
The wireless tag information reader is
A second information acquisition means for acquiring predetermined information from the second wireless tag via wireless communication;
Along with the movement of the moving body, the moving path of the moving body is calculated based on the information acquisition result from the RFID tag information reading device arranged at the different position acquired by the second information acquisition unit. A moving path detection system for a moving body, characterized in that second moving path calculation means is provided. In the moving path detection system of the moving body according to claim 1,
The wireless tag information reader is
A moving path detection system for a moving body, which is provided on a substantially ring-shaped member that can be attached to a human body as the moving body. In the moving path detection system of the moving body according to claim 2,
The second wireless tag is
A moving path detection system for a moving body, which is provided on a substantially ring-shaped member that can be attached to a human body as the moving body. In the moving body detection system of the moving body according to claim 4,
The second wireless tag is
A moving path detection system for a moving body, comprising: a coil antenna provided with a loop coil; a dipole antenna in which a plurality of antenna elements are arranged substantially linearly; or a substantially planar planar antenna. The moving body detection system for a moving body according to any one of claims 3 to 5,
The wireless tag information reading device or the second wireless tag provided on the substantially ring-shaped member is provided in at least two places on one side and the other side of the substantially ring-shaped member in a mounted state on the human body. A moving path detection system for a moving object. In the moving path detection system of the moving body according to claim 6,
The moving path detection system for a moving body, wherein the wireless tag information reading device or the second wireless tag is provided at least at two places in the front-rear direction of the human body in the substantially ring-shaped member in the mounted state. . The moving path detection system for a moving body according to any one of claims 3 to 7,
The substantially ring-shaped member is
A mobile switching device comprising: a communication switching means for switching between enabling / disabling by the communication function of the wireless tag information reading device or the second wireless tag according to mounting / non-mounting on the human body. Travel path detection system. The movement path detection system for a moving body according to any one of claims 3 to 8,
The substantially ring-shaped member is
A moving body detection system for a moving body, comprising shielding means for reducing communication signal intensity on an inner peripheral side or an outer peripheral side in a state of being attached to the human body. The moving path detection system for a moving body according to any one of claims 1 to 9,
It has route judgment means for judging the coincidence between the route of the moving body calculated by the first movement route calculation means or the second movement route calculation means and a predetermined route. A moving path detection system for moving objects. The moving body detection system for a moving body according to claim 10,
The route determination means includes
When the first or second information acquisition unit acquires the predetermined information from the wireless tag arranged in an area other than the predetermined path, the determination is that the predetermined path does not match. A moving path detection system for a moving object. In the moving path detection system of the moving body according to claim 10 or 11,
The route determination means includes
A moving path detection system for a moving body, wherein the matching with a predetermined path is determined according to the information acquisition time by the first or second information acquisition means. The moving body detection system for a moving body according to any one of claims 10 to 12,
The route determination means includes
A moving path detection system for a moving body, wherein the matching with a predetermined path is determined according to a time sequence of information acquisition by the first or second information acquisition means. The moving body detection system for a moving body according to any one of claims 10 to 13,
A moving path detection system for a moving body, comprising path abnormality signal output means for outputting a signal for notifying a path abnormality in response to the determination of the coincidence of the path of the moving body by the path determination means. The moving body detection system for a moving body according to any one of claims 1 to 14,
It has route setting means for setting and storing the route of the moving body calculated by the first route calculating means or the second route calculating means as the predetermined route that the moving body should originally pass through. A moving path detection system for a moving object. An accessory that can be attached to a predetermined part of a human body in a substantially ring shape,
A wireless tag information reading device that transmits and receives information by wireless communication with a first wireless tag including an IC circuit unit that stores information and a tag-side antenna that transmits and receives information.
A jewelry provided at each of the plurality of substantially ring-shaped circumferential positions. An accessory that can be attached to a predetermined part of a human body in a substantially ring shape,
An IC circuit unit for storing information and a tag-side antenna for transmitting and receiving information, and a second wireless tag for transmitting and receiving information to and from the wireless tag information reading device by wireless communication,
A jewelry provided at each of the plurality of substantially ring-shaped circumferential positions. The accessory of claim 17,
The second wireless tag is
An accessory comprising a tag antenna having a coil antenna having a loop coil, a dipole antenna having a plurality of antenna elements arranged substantially linearly, or a substantially planar planar antenna.

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