JP2007319471A - Measuring system, receiver, measuring method and mat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a measuring system capable of surely measuring at the spot even if measuring points are close to each other. <P>SOLUTION: At first, trigger output sections output trigger signals with their own original patterns respectively (S31). When receiving an ID number from an ID tag (S32), a receiving section confirms whether or not it is synchronized with the pattern of the trigger signal transmitted by itself (S33). When it is synchronized therewith (YES in S33), this system executes an error check (S34), when there is no error (YES in S35), imports the received ID number along with time-counting data from a time counting section 14 (S36) and store them in a hard disk (S37). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a measurement system, a receiver, a measurement method, and a mat for collective races such as marathons and bicycles, and more particularly to a measurement system, a receiver, a measurement method, and a mat that detect only data at a predetermined position.

For example, Japanese Patent Laid-Open No. 8-57104 (Patent Document 1) discloses a timing device for a collective race. According to the publication, when many competitors participate, many competitors may enter the goal line at the same time. In this case, a unique identification number (ID) transmitted by each competitor ) May overlap and be unable to be identified. For this reason, when the unique number is transmitted, a device has been devised in which the unique number is transmitted a plurality of times.
JP-A-8-57104 (paragraph number 0007, etc.)

  In a race or the like in which many conventional competitors participate, the measurement is performed as described above. On the other hand, in a marathon or the like, when the same course is reciprocated, a measurement point before the turn-around point and a measurement point after the turn-back point may exist in the vicinity. In such a case, when the trigger signal is transmitted from each measurement point, and the ID tag receiving it outputs the ID number and receives it at the receiver of the measurement point, the ID number of the player before turning back Can be measured at the measurement point after turning back and vice versa.

  The present invention has been made to solve the above-described problems, and provides a measurement system, a receiver, and a measurement method capable of surely measuring even when measurement points are close to each other. For the purpose.

    A measurement system according to the present invention is provided in the vicinity of a predetermined position, and outputs a trigger signal having a unique pattern to the predetermined system, and a trigger signal from the trigger signal output unit The ID tag outputs an ID number in a pattern synchronized with the pattern of the received trigger signal and receives the ID number output by the ID tag. The receiving unit is configured to determine whether or not the output pattern of the received ID number is synchronized with the pattern of the trigger signal, and the determining unit is configured to synchronize the output pattern of the received ID number with the pattern of the trigger signal The received ID number is stored only when it is determined that there is no error.

  The ID tag outputs the ID number in a pattern synchronized with the received trigger signal pattern, and the receiving unit stores only the ID number synchronized with the trigger signal pattern, so the trigger signal pattern is changed for each measurement point. In this case, the ID number output in response to the trigger signal from a different measurement point is not received.

  As a result, even if measurement points are close to each other, it is possible to provide a measurement system that can reliably measure at the points.

  Preferably, a current time detector for detecting the current time is included, and the ID number received by the receiving unit is stored together with the current time.

  Another aspect of the present invention relates to a receiver that receives an ID number output by an ID tag that outputs an ID number in response to a trigger signal. The trigger signal has an output pattern unique to a predetermined system, and the ID tag outputs an ID number in a pattern corresponding to the output pattern of the received trigger signal. The receiver is configured to determine whether the output pattern of the received ID number is synchronized with a predetermined output pattern, and the determination unit is synchronized with the output pattern with a predetermined ID number, A storage means for storing the ID number is included only when it is determined that there is no error.

  In still another aspect of the present invention, a measurement method includes a step of outputting a trigger signal in a unique pattern in a predetermined system, and a step of receiving an ID number from an ID tag provided outside, The ID tag receives the trigger signal and outputs the ID number in a pattern synchronized with the output pattern of the received trigger signal. The receiving step synchronizes the output pattern of the received ID number with the pattern of the trigger signal. And a step of storing the received ID number only when it is determined that there is no error and synchronization.

  In one embodiment of the present invention, the above-described measurement system or receiver may be used in a dynamic management system.

  According to still another aspect of the present invention, a measurement system is provided in the vicinity of a predetermined position, and a measuring instrument having a trigger signal output unit that outputs a trigger signal having a unique pattern in the predetermined system. A trigger signal output unit that outputs a trigger ID together with a measurement instrument ID for identifying the measurement instrument itself, and outputs an ID number in response to the trigger signal from the trigger signal output unit; An ID tag having a receiving unit for receiving the measuring instrument ID, the ID tag outputting an output unit for outputting an ID number, a memory for storing the receiving measuring instrument ID, and a measuring instrument ID stored in the memory. And transmitting means for transmitting at the time interval.

  Preferably, when a different measuring instrument ID is received, the memory stores the newly received measuring instrument ID instead of the previously receiving measuring instrument ID.

  According to one embodiment of the present invention, the ID tag is attached to a person's foot, and the trigger signal output unit is provided at a portion where the person places the foot.

  Preferably, the measurement system is provided in a hospital, and the hospital has a management device, and the management device includes display means for displaying an ID number of an ID tag attached to a person's foot received by the receiving unit.

  More preferably, the part on which the person places his / her foot includes a mat, and the trigger signal output unit is a coil incorporated in the mat.

  The mat and the ID number of the ID tag attached to the person's foot are preferably associated in advance.

  Yet another aspect of the present invention relates to a mat. The mat includes a coil that continues in a twisted manner, and the coil transmits a trigger signal that activates an ID tag that outputs an ID in response to a predetermined trigger signal.

  Preferably, the mat has a rectangular shape, and the coil continuous in a twisted manner is continuously provided on the periphery of the mat.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram (A) showing measurement points A and B when the measurement system according to one embodiment of the present invention is applied to a track competition in which measurement is performed at two measurement points, and measurement points A and B. It is a block diagram (B) which shows the structure of the measuring instrument 10 installed in FIG.

  With reference to FIG. 1A, the track 20 is provided with two measurement points, a goal point A (also used as a start point) and an intermediate point B. It is assumed that the goal point A and the intermediate point B exist within a range where radio waves reach each other. A plurality of runners 21 a, 21 b, etc., run on the track 20 while holding ID tags that output ID numbers corresponding to the numbers, respectively. Each ID tag incorporates a unique ID number, and, as will be described later, when receiving a trigger signal, the ID tag outputs the built-in ID number.

Referring to FIG. 1B, measuring instrument 10 includes a trigger output unit 12 that outputs a trigger signal, a reception unit 13 that receives an ID number from an ID tag, and a time measuring unit that outputs the current time. 14, a clock output unit 15 that outputs a clock serving as a reference of the trigger signal output timing, which will be described later, a hard disk 16 that stores data, and a CPU 11 that controls the entire measuring instrument 10. The trigger output unit 12 includes a transmitting antenna (not shown) and outputs a trigger signal having a unique pattern to the system. Here, the pattern unique to the system means a unique pattern in the measuring instrument 10 (including measuring instruments 10a and 10b described below).

  The trigger signal patterns output from the measuring instruments 10a and 10b provided in the vicinity of the goal point A and the intermediate point B are different from each other. FIG. 2 is a diagram illustrating output patterns of a plurality of trigger signals. 2A, 2 </ b> C, and 2 </ b> E are diagrams illustrating examples of trigger signal patterns output from the trigger output unit 12. These trigger signals are created based on the clock signal from the clock output unit 15.

  When the ID tag receives the trigger signal of these patterns, the ID tag outputs an ID number incorporated therein in synchronization with the pattern. 2B, 2D, and 2F are output patterns of the ID signal output by the ID tag in synchronization with the trigger signals (A), (C), and (E) output by the trigger output unit 12, respectively. FIG. As shown in FIG. 2, the trigger signal and the output pattern of the ID number of the ID tag are synchronized.

  When receiving the ID signal from the ID tag, the receiving unit 13 inputs the current time from the time measuring unit 14 and stores the ID number together with the time in the hard disk 16. Here, the timer unit 14 has a function of detecting a standard time, and may receive a standard radio wave or a time signal from the GPS.

  Next, the ID tag will be described. FIG. 3 is a block diagram showing the configuration of the ID tag 40. Referring to FIG. 3, ID tag 40 includes a receiving antenna 51, a trigger signal detection unit 41, a battery 49, a switch 42, and an ID number generation unit 43 that generates an ID number as a unique number. The ID number generation unit 43 includes an address counting unit 45, an ID number storage unit 46, an oscillator 47, an output circuit 48, a transmitting antenna 44 that outputs an ID number, a memory 52, and a microcomputer 50 that controls the whole. The

  The receiving antenna 51 is configured to receive a trigger signal from each trigger output unit 12, and the trigger signal detecting unit 41 recognizes that the signal received by the receiving antenna 51 is a trigger signal. The switch 42 is turned on. When the switch 42 is turned on, power is supplied to the ID number generation unit 43, and the ID number corresponding to the ID tag 40 is output from the ID number generation unit 43 via the transmission antenna 44. The ID number thus output is converted into a high frequency signal by the oscillator 47 and transmitted from the transmitting antenna 44 via the output circuit 48.

  Here, an ID number is continuously transmitted from the oscillator 47 provided in the ID tag 40 in synchronization with a pattern unique to the received trigger signal system, and the receiving unit 13 receives this ID number.

  Next, the operation of the ID tag 40 will be described. FIG. 4 is a flowchart showing the operation of the ID tag 40. Referring to FIG. 4, ID tag 40 first detects a trigger signal (step S11, hereinafter, steps are omitted). When the trigger signal is received (YES in S11), the microcomputer 50 is activated (S12), and the trigger signal is captured (S13). The trigger signal has a predetermined pattern. This pattern is detected (S14).

  Here, as shown in FIG. 2, it is assumed that a data transmission pattern is determined according to the trigger signal. For example, in the case of the trigger signal A, the data transmission pattern is a pattern in which data transmission is repeated every 0.1 milliseconds after being turned off for 0.1 milliseconds (milliseconds). The trigger signal B is a pattern in which the data transmission pattern repeats data transmission every 0.2 ms after being turned off for 0.1 ms, and the trigger signal C is 0.1 ms after being turned off for 0.1 ms. It is a pattern that repeats the transmission that is on for a second and off for 0.2 msec.

  Data is prepared from the pattern detected from the trigger signal and the ID number of the ID tag 40 stored in the ID number storage unit 46 (S15). From the received trigger signal, according to the pattern data described above, A timer is set (S16).

  Next, the timer count is set and the countdown is started (S17, S18). When the set count value is reached (S19), RF (radio frequency) is transmitted (S20), the prepared data is transmitted, and RF is turned off (S21, S22). Thereafter, the detection of the trigger signal is waited (S23), and if detected, the process returns to S16, the timer is set, and the data transmission is repeated. This is repeated a predetermined number of times. If not detected, the process returns to S11.

  Thus, since the ID tag 40 transmits to the receiving unit 13 in synchronization with the output pattern of the received trigger signal, if the trigger signal pattern for each measurement point is different, trigger signals from different measurement points are used. ID tag data responding to is not received. As a result, even if the measurement points are close to each other, measurement at that point can be reliably performed.

  Further, by transmitting data a plurality of times at regular intervals, there is no data omission.

  Further, by storing the time measured by the time measuring unit 17 in the hard disk 19, it is possible to know who made the goal at what time.

  In addition, although the case where the trigger output unit 12 and the reception unit 13 are built in the measuring instrument 10 has been described here, the present invention is not limited to this and may be separate.

  Next, the operation of the trigger output unit 12 will be described with reference to the flowchart shown in FIG. Referring to FIG. 5, the trigger output unit 12 first outputs a trigger signal in each unique pattern (S31). When receiving the ID number from the ID tag 40 (S32), the receiving unit 13 checks whether or not it is synchronized with the pattern of the trigger signal transmitted by itself (S33). If synchronized (YES in S33), an error check is performed (S34), and if there is no error (YES in S35), the received ID number is taken together with the timing data from the timing unit 14 (S36), and the hard disk 16 (S37).

  Here, for example, the receiving unit 12 can read data only in the ON portion of the pattern shown in FIG. 2, and the ID number is placed on the ON portion. The signal cannot be decoded and an error occurs.

  As described above, the adjacent receiving unit 12 receives the ID signal activated other than the trigger signal generated by itself, but cannot receive it as correct data because the clocks do not match.

  Moreover, even if the trigger signals are close to each other, it is possible to live together. Even if the ID tag 40 is operated by vector synthesis of a plurality of trigger signals, it does not match any of the trigger output units 12 and is taken in as data. It will never be done.

  As described above, even when there are a plurality of combinations of the trigger signal output unit 12 and the reception unit 13 in a range that can be received by a weak radio wave, data is not mixed.

  In this measurement system, even if these signals are received externally, it is difficult to reproduce the original data. In addition, security is high because eavesdropping is difficult.

  Next, another embodiment of the present invention will be described. FIG. 6 shows another embodiment of the present invention. In this embodiment, the measurement system is used as a dynamic management system.

  Referring to FIG. 6, the entrance to and exit from a certain gate 26 is performed using this measurement system. That is, the measuring instrument 30 is installed inside the gate 26 and the measuring instrument 40 is installed outside. Both the measuring instruments 30 and 40 show only the trigger output units 32 and 42 and the receiving units 33 and 43 similar to the trigger output unit 12 among the elements of the measuring instrument 10 shown in FIG. Elements are omitted.

  When the person 23, 24 having the ID tag 40 passes through the gate 26, if the ID number is received by the measuring instrument 40 after receiving the ID number by the measuring instrument 30, then the person is in the gate. In other words, it can be determined that the person has moved from the outside of the gate 26 to the inside. Thereby, the passing time for each person who passes through the gate 26 can be managed.

  For such measurement, a plurality of measuring instruments 30, 40, etc. are connected to each other, and the management computer collects ID numbers and passing times from the measuring instruments 30, 40 and manages them collectively. Is preferred.

  Next, another embodiment of the present invention will be described. In this embodiment, the measuring instrument outputs a unique pattern trigger signal and simultaneously outputs its own unique measuring instrument ID. On the other hand, the ID tag stores the ID of the measuring instrument detected in the memory at the same time as the trigger signal.

  FIG. 7 is a block diagram showing the configuration of the ID tag 60 in this embodiment. Referring to FIG. 7, the ID tag 60 includes a measuring instrument ID detection unit 61 that detects the ID of the measuring instrument from the trigger signal in addition to the configuration similar to the ID tag 40 illustrated in FIG. 3. This measuring instrument ID detector 61 is also controlled by the microcomputer 50. The instrument ID detected by the instrument ID detector 61 is stored in the memory 52.

  FIG. 8 is a flowchart showing the operation of the ID tag 60 in this embodiment. The ID tag 60 in this embodiment basically operates in the same manner as the ID tag 40. Therefore, referring to FIG. 8, in this embodiment, when a trigger signal is first received from a measuring instrument, the measuring instrument ID detection unit 61 detects the measuring instrument ID included therein (S41). Next, the detected measuring instrument ID is stored in the memory 52 (S42). After that, it waits for a certain time (S43). This elapsed time is measured by the timer function of the microcomputer 50. The specific time may be set in advance in the ID tag 60, such as 1 minute, 10 minutes, 1 hour, or the like, but may be set by a setting device not shown. When the predetermined time has elapsed (YES in S43), the measuring instrument ID is transmitted from the transmitting antenna 44 to the outside (S44). When a trigger signal is newly received from a measuring instrument, the latest measuring instrument ID is always transmitted in order to store the measuring instrument ID of the measuring instrument (S44 to S41). In this embodiment, the ID tag 60 outputs its own ID number without synchronizing with the received trigger signal pattern, unlike the previous embodiment. Note that, similarly to the previous embodiment, a pattern synchronized with the pattern of the received trigger signal may be output.

As described above, according to this embodiment, the ID tag 60 transmits the latest measuring instrument ID detected by the ID tag 60 to the outside after a predetermined time has elapsed after receiving the measuring instrument ID. If the measuring instrument ID is detected using the receiver, the latest measuring instrument position where the trigger signal detected by the ID tag 60 is transmitted can be known.

  That is, since the position of the measuring instrument that transmits the trigger signal is known in advance, if the measuring instrument ID is known, the position can be known. Therefore, if this ID tag 60 is attached to a product, for example, and the measuring instrument ID receiver receives the measuring instrument ID, the position where the commodity exists, that is, the management of inventory, etc. can be performed.

  In the said embodiment, although the ID tag demonstrated the case where the latest measuring device position was stored in memory, you may make it store not only this but the past log | history entirely.

  Next, still another embodiment of the present invention will be described. In this embodiment, the above-described dynamic management system is used for management of patients such as elderly people in hospitals and the like. FIG. 9 is a diagram for explaining this embodiment, and shows a state in which an elderly person 71 is resting on a bed 72. At the bedside of the bed 72, a communication device 74 with a nurse center and a call switch 75 are provided. A mat 73 is provided below the bed 72. The above-described ID tag 60 (not shown) is attached to the ankle of the elderly person 71, and the mat 73 incorporates a coil for generating a trigger signal for activating the tag. With such a configuration, the movement of the elderly man 71 can be monitored. That is, when the elderly person 71 leaves the bed, first put his feet on the mat 73. At this time, the tag attached to the elderly person's foot reacts to the trigger signal and outputs the ID number. This signal is received by a receiving unit (not shown), and is transmitted, for example, to a nurse center where a nurse stands by. The nurse center is provided with a display device such as a display, and this ID number is displayed. As a result, the nurse center can detect that an elderly person having this ID number has left the bed.

  Next, a specific example of behavior detection of the elderly person 71 using the ID tag 60 of the elderly person 71 and the mat 73 that outputs a trigger signal having a unique pattern will be described. Here, an example in a room of a plurality of elderly people, for example, six people will be described. In this case, a bed for six persons and a mat 73 corresponding to each bed are prepared, and a detection signal of the mat 73 is notified to, for example, a management device (not shown) in the nurse center.

  Each mat 73 outputs a trigger signal having a unique pattern, and the ID tag 60 described above is associated in advance with the elderly 71 corresponding to each mat 73, that is, the ankle of the elderly 71. Therefore, even if a person other than the elderly person 71 corresponding to the specific mat 73, for example, another elderly person, a doctor, a nurse, or the like is placed on the mat 73, each person has the ID tag 60. If it is registered in advance, it is possible to know who has approached or passed over the mat 73. That is, not only the movement of the corresponding elderly person 71 but also the actions of the doctor and nurse can be managed. Therefore, not only monitoring the movement of the elderly person 71, but even if there is a nurse call from the elderly person 71, whether there is a nurse in the vicinity or whether the nurse went to the care after the nurse call. It can be confirmed whether or not.

  Next, the arrangement of the coils in the mat 73 will be described. FIG. 10 is a plan view showing the arrangement of the mat 73 and the coil 76 incorporated therein. Referring to FIG. 10, coils 76 are arranged so as to be folded back to each other. Here, the power source and the like are omitted.

  FIG. 11 is a view of adjacent coils 76 arranged so as to be folded back as seen from the cross-sectional direction. In the figure, the direction of the magnetic field generated by the coil 76 is also displayed. The adjacent coils 76 are arranged such that current flows in opposite directions (in the figure, a circle with a + sign means that a current flows in the depth direction on the paper surface, and a circle without a + sign is in the reverse direction. Therefore, the generated magnetic fields cancel each other, and the trigger signal is generated only in the vicinity of the coil 76. As a result, it does not adversely affect medical machines such as hospitals and patient pacemakers.

  FIG. 12 is a diagram illustrating an example of a simulation of the combined magnetic field at an arbitrary point A of the coil 76. Here, the coil diameter was 0.1 mm, and the current passed through the coil 76 was 1A. The X axis represents the distance in the horizontal direction when the center of the coil 76 is 0, and the Y axis represents the strength of the magnetic field. Referring to FIG. 12, the trigger signal reaches only about 20 mm. Further, the level at which the trigger signal reaches can be set by appropriately selecting the diameter of the coil 76 and the flowing current.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

It is a block diagram which shows the principal part of the track stadium as an example to which the measurement system concerning this invention is applied, and the measuring device provided in a measurement point. It is a figure which shows an example of the output pattern of a trigger signal and ID number. It is a block diagram which shows the structure of an ID tag. It is a flowchart which shows operation | movement of an ID tag. It is a flowchart which shows operation | movement of a trigger output part. It is a block diagram which shows other embodiment of this invention. It is a block diagram which shows the structure of the ID tag which concerns on other embodiment of this invention. It is a flowchart which shows operation | movement of the ID tag which concerns on other embodiment of this invention. It is a figure which shows other embodiment of this invention. It is a top view which shows arrangement | positioning of the mat | matte 73 and the coil 76 integrated in it. It is the figure which looked at the adjacent coil arranged so that it might return from the cross-sectional direction. It is a figure which shows an example of the simulation of the synthetic magnetic field in arbitrary one point A of a coil.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Measuring instrument, 11 CPU, 12 Trigger signal output part, 13 Receiving part, 14 Time measuring part, 15 Clock output part, 16 Hard disk, 40, 60 ID tag, 61 Measuring instrument ID detection part.

Claims (14)

A trigger signal output unit provided in the vicinity of a predetermined position and outputting a trigger signal having a unique pattern in a predetermined system;
An ID tag that outputs an ID number in response to a trigger signal from the trigger signal output unit;
The ID tag outputs the ID number in a pattern synchronized with the received trigger signal pattern,
A receiving unit that receives the ID number output by the ID tag,
The receiving unit determines whether or not the output pattern of the received ID number is synchronized with the pattern of the trigger signal;
A measuring system comprising: a storing unit that stores the received ID number only when it is determined that the output pattern of the received ID number is synchronized with the pattern of the trigger signal and there is no error. The measurement system according to claim 1, further comprising a current time detector that detects a current time, and storing the ID number received by the receiving unit together with the current time. A receiver that receives an ID number output by an ID tag that outputs an ID number in response to a trigger signal,
The trigger signal has a unique output pattern in a predetermined system,
The ID tag outputs the ID number in a pattern according to the output pattern of the received trigger signal,
Determining means for determining whether or not the output pattern of the received ID number is synchronized with the predetermined output pattern;
A receiver comprising: storage means for storing the ID number only when the determination means determines that the output pattern of the ID number is synchronized with the predetermined output pattern and there is no error. Outputting a trigger signal in a unique pattern to a predetermined system;
Receiving an ID number from an ID tag provided outside,
The ID tag receives the trigger signal and outputs the ID number in a pattern synchronized with an output pattern of the received trigger signal,
The receiving step receives the ID number only when it is determined that the output pattern of the received ID number is synchronized with the pattern of the trigger signal and is synchronized with no error. Storing the method. A dynamic management system using the measurement system defined in claim 1. A dynamic management system using the receiver defined in claim 3. Including a measuring instrument having a trigger signal output unit, which is provided in the vicinity of a predetermined position and outputs a trigger signal having a unique pattern in a predetermined system;
The trigger signal output unit outputs a trigger ID together with a measuring instrument ID for identifying the measuring instrument itself,
In response to a trigger signal from the trigger signal output unit, an ID tag having an output unit that outputs an ID number and a receiving unit that receives the measuring instrument ID,
The ID tag is
An output unit for outputting the ID number;
A memory for storing the received instrument ID;
Transmitting means for transmitting the measuring instrument ID stored in the memory at a predetermined time interval;
Measuring system. The measurement system according to claim 7, wherein, when a different measurement instrument ID is received, the memory stores a newly received measurement instrument ID instead of the previously received measurement instrument ID. The ID tag is attached to a person's foot,
The measurement system according to claim 1, wherein the trigger signal output unit is provided in a portion where a person places his / her foot. The measurement system is provided in a hospital, the hospital has a management device,
The measurement system according to claim 9, wherein the management device includes display means for displaying an ID number of an ID tag attached to a person's foot received by the receiving unit. The portion on which the person places his / her foot includes a mat,
The measurement system according to claim 9 or 10, wherein the trigger signal output unit is a coil incorporated in the mat.   The measurement system according to claim 11, wherein the mat and an ID number of an ID tag attached to the person's foot are associated in advance. A mat that includes coils that are continuous in a twisted pattern,
The coil is a mat that emits a trigger signal that activates an ID tag that outputs an ID in response to a predetermined trigger signal. The mat according to claim 13, wherein the mat has a rectangular shape, and the coil continuous in a distorted manner is continuously provided on a peripheral edge of the mat.

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