JP2011242157A - Attitude measurement instrument and attitude measurement system, form, and packing box using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attitude measurement instrument capable of measuring the attitude of a measurement object without having a complex and expensive element.SOLUTION: This attitude measurement instrument comprises: a container that is formed so as to be able to hold liquid inside; IC tags 10, 11, 12, 14 that are mounted on the inner surface of the container at different locations from each other; and liquid 40 that is held inside the container and contacts with, among the plurality of IC tags, an IC tag 10 that is positioned in the vertically downward direction of the container depending on the attitude of the container. With this instrument, the attitude of measurement object can be measured without needing an expensive and complex element such as a gyroscope, and the IC tag that is contacted by liquid is easily decided without using any additional energy.

Description

  The present invention relates to a posture measuring instrument that can measure the posture of a measurement object without complicated and expensive elements and related technology.

  Conventionally, in order to measure the posture of a measurement object that can take various postures, a complicated and expensive element represented by a gyroscope has been used.

  In addition, when a similar measurement object (for example, a protective sheet used on a construction site that hangs down on the outside of a scaffold) is used in a large amount, an IC is used to identify them. There are examples where tags are used.

  The orientation is important, and there are some measurement objects that are used in large quantities. For example, a formwork (especially a resin formwork) that keeps the shape of the concrete constant until the concrete cast on the spot is completed, a packing box (mainly a cardboard box) that packs precision equipment, and the like.

  Speaking of formwork, when the formwork is used on a vertical surface such as a wall, column, or beam side, the contact surface in contact with the concrete is used vertically, and the curing period is about 7 days. Short term. On the other hand, when the formwork is used on a horizontal surface such as a slab bottom or a beam bottom, the formwork is used horizontally and the curing period is about 28 days.

  Thus, since the curing period varies depending on the use posture of the mold, it is necessary to distinguish the use posture in order to manage the service life.

  In order for a contractor or a general contractor or the like to ensure that the construction at the site has been carried out correctly, a means for proving that the use posture or the like is valid is required.

  In the case of packing boxes, the indication of top-and-bottom use is often attached to the easy-to-read parts of the packing box. It's just up to you, and it's not easy to guarantee this.

  It is impractical and significantly expensive to attach a large and complex element such as a gyroscope to a measurement object that is handled in large quantities and has an important attitude. I have to say that it is impossible.

Under such circumstances, there are virtually no measuring instruments that can handle such measurement objects.
JP 2008-284709 A

  An object of this invention is to provide the attitude | position measuring device which can measure the attitude | position of a measuring object, without a complicated and expensive element.

  A posture measuring instrument according to a first aspect of the present invention is a container formed so as to hold a liquid therein, a plurality of IC tags mounted on the inner surface of the container at different positions, and held inside the container. And a liquid in contact with the IC tag positioned vertically below the container among the plurality of IC tags according to the attitude of the container.

  In this configuration, if a container, an IC tag, and a liquid are prepared, an attitude measuring device can be configured, and expensive and complicated elements such as a gyroscope are unnecessary. In addition, the liquid reaches the vertically lower side of the container by gravity, that is, without any electrical energy (for example, supplied from a battery or the like), and the IC tag in the vicinity of the plurality of IC tags at that location. To touch.

  As a result, the IC tag that is in contact with the liquid is prevented from communicating by radio waves, and communication is disabled. In other words, if an IC tag that has become unable to communicate is identified, it is determined that the IC tag is vertically downward, and the orientation of the measurement target can be measured.

  In the posture measuring instrument according to the second invention, in addition to the first invention, a blocking film that blocks radio waves in a predetermined frequency band used by the plurality of IC tags for communication between the plurality of IC tags and the inner surface of the container. Was provided.

  With this configuration, these IC tags cannot communicate with radio waves that have directly propagated from the opposite side (ie, the outside) of the inside of the container. That is, it is possible to suppress a situation in which the IC tag that has been in contact with the liquid has misidentified that the IC tag has not been in contact with the liquid despite being communicated by radio waves that have directly propagated from outside the container.

  In the posture measuring instrument according to the third invention, in addition to the first invention, a protective film is provided on the surface of the plurality of IC tags toward the inside of the container.

  With this configuration, when the IC tag that has been in contact with liquid is no longer in contact with the liquid due to a change in the posture of the measurement target, the IC tag can be immediately brought into a communicable state.

  In the posture measuring instrument according to the fourth invention, in addition to the first invention, the predetermined frequency band is a 2.45 GHz band, and the liquid is water.

  This configuration makes it possible not only to use a frequency band that is often used and easily handled by a communication partner such as a reader, but also to make the wetted IC tag incapable of communication using an extremely easy and inexpensive liquid. be able to. In addition, even if liquid leaks from the container, damage can be minimized.

  In the posture measuring instrument according to the fifth invention, in addition to the first invention, the liquid has a volume equal to or less than half of the inner volume of the container.

  With this configuration, it can be said that the amount of liquid is small. Therefore, only a small number of IC tags cannot communicate, and the IC tags that cannot communicate can be easily identified.

  In the posture measuring instrument according to the sixth invention, in addition to the first invention, the liquid has a volume exceeding half of the internal volume of the container.

  With this configuration, it can be said that the amount of liquid is large, so that only a small number of IC tags can communicate, and an IC tag that can communicate can be easily identified.

  In the posture measuring instrument according to the seventh invention, in addition to the first invention, the container has a cubic shape, and the plurality of IC tags are mounted on each surface of the cube.

  With this configuration, the container can be easily held in a stable posture, and the posture measuring instrument is not bulky and can be handled easily.

  According to the present invention, an expensive and complicated element such as a gyroscope is unnecessary, and an IC tag in contact with a liquid can be specified without any additional energy, thereby measuring the posture of a measurement target.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a development view of the posture measuring instrument according to the first embodiment of the present invention, and FIG. 2 is a block diagram of the posture measuring system according to the first embodiment of the present invention.

  As shown in FIG. 1, the posture measuring device 60 includes a container 1 that is formed so as to hold a liquid therein, and a plurality of IC tags 10 to 15 that are mounted on the inner surface of the container 1 at different positions. With.

  Also, as shown in FIG. 4 and the like, the liquid 40 is held inside the container 1 and is in contact with the IC tag positioned vertically below the container 1 among the plurality of IC tags 10 to 15 according to the attitude of the container 1. To do.

  In the posture measuring device 60 according to the first embodiment, as shown in FIG. 1, the container 1 has a cubic shape, and the plurality of IC tags 10 to 15 are attached to each surface (inside) of the cube.

  More specifically, the IC tag 10 is mounted inside the bottom surface 2, and the outside of the bottom surface 2 is a mounting surface 2 a that is in contact with the measurement target. The placement surface 2a may be adhered to the measurement target, or may simply be placed if there is no concern that the posture of the container 1 changes.

  Similarly, the IC tag 11 is on the plane 3, the IC tag 12 is on the front surface 4, the IC tag 13 is on the back surface 5, the IC tag 14 is on the right side surface 6, and the IC tag 15 is on the left side surface 7. Each is attached.

  In the above description, “bottom surface, front surface, etc.” is intended to facilitate distinction assuming that the bottom surface 2 is at the lowest position, and the present invention is not necessarily limited to such a case. The case is not limited. For example, the right side surface 6 can be positioned directly below.

  These IC tags 10 to 15 hold information for identifying each other, but other held information may be variously changed as necessary. Since these IC tags 10 to 15 have substantially the same configuration, only the IC tag 10 will be described as a representative example in order to avoid duplication of explanation.

  As shown in FIG. 2, the IC tag 10 includes an antenna 16 and an IC chip 17 connected to the antenna 16. Although not shown in FIG. 2, the antenna 16 and the IC chip 17 are usually covered.

  The IC chip may be an active type incorporating a battery or a passive type powered by radio waves without incorporating a battery. Here, in Embodiment 1, it shall be a passive type. The shape of the IC type is arbitrary, but a small one is preferable in order to facilitate incorporation into the container 1.

  The usable frequency band of the antenna 16 may be a 125 KHz band, a 13.56 MHz band, a 2.45 GHz band, and the like, but a 2.45 GHz band is preferable. This is because there are many devices that can be used, and communication tends to be impossible if water contacts the periphery of the antenna 16. Even a liquid that is not water can be used as long as it cannot be communicated. Furthermore, two liquids that do not mix with each other, such as water and oil, can be used.

  The system shown in FIG. 2 includes a reader 20 that can communicate with each of the IC tags 10 to 15 in addition to the attitude measuring device 60 of this embodiment. The reader 20 includes the following elements, but the reader 20 may further include a writer function.

  The antenna 21 of the reader 20 communicates with the antenna 16 of the IC tag 10 using the radio wave in the above-described use frequency band. The tuner 22 selects a signal in the use frequency band from the signal received by the antenna 21 and demodulates it. The reader IC 23 reads the states of the IC tags 10 to 15 based on the signal demodulated by the tuner 22.

  Further, the reader 20 is provided with an interface 24 through which the CPU 25 accesses the memory 26, accepts input from the keyboard 27, and controls the reader IC 23.

  Of course, the reader 20 may be replaced with a reader-dedicated machine up to the interface 24 and the others may be replaced with a personal computer.

  The method of the anti-collision function of the reader 20 is arbitrary. For example, a FIFO method in which communication is performed from an IC tag that has entered first in the communication range of the antenna 21 may be employed, a selective access method in which communication is performed by selecting a specific IC tag, or all of them may be employed. A multi-access method that communicates with other IC tags may be used.

  3A and 3B are cross-sectional views of the IC tag. As shown in FIG. 3A, the IC tag main body 30 of the IC tag 10 can communicate with the antenna 21 of the reader 20 when not in contact with the liquid 40.

  Between the IC tag main body 30 and the bottom surface 2, a blocking film 31 that blocks radio waves in a frequency band that the IC tag 10 uses for communication is provided. The blocking film 31 is made of, for example, aluminum foil, and both surfaces of the aluminum foil are preferably adhesive surfaces. By providing the blocking film 31, it is possible to prevent the antenna 16 from communicating by radio waves from the blocking film 31 side.

  A protective film 32 is provided on the surface of the IC tag main body 30 on the opposite side of the blocking film 31, that is, the surface facing the inside of the container 1. The protective film 32 can be arbitrarily configured as long as it has waterproof properties and the antenna 16 does not interfere with radio waves from the inside of the container 1.

  In the first embodiment, the liquid 40 is water. If the bottom surface 2 does not face vertically downward, the water in the container 1 does not reach the vicinity of the bottom surface 2. That is, as shown in FIG. 3A, there is no water in the vicinity of the IC tag 10, and the antenna 16 of the IC tag 10 can communicate with the antenna 21 of the reader 20.

  On the other hand, when the bottom surface 2 faces vertically downward, the water in the container 1 reaches the vicinity of the bottom surface 2. At this time, as shown in FIG. 3 (b), communication by the antenna 16 of the IC tag 10 is hindered by water, and the antenna 16, that is, the IC tag 10 cannot be communicated.

<First example>
FIG. 4 is a perspective view of posture measuring instrument 60 according to the first example of Embodiment 1 of the present invention. That is, in the first example, the liquid 40 has a volume that is less than half of the inner volume of the container 1, and a small amount of water is positioned vertically below the container 1.

  In the state of FIG. 4, since the bottom surface 2 faces vertically downward, water is located only in the vicinity of the bottom surface 2. Therefore, in the state of FIG. 4, only the IC tag 10 cannot communicate, and the other IC tags 11 to 15 can communicate.

  At this time, when the reader 20 tries to communicate with each of the IC tags 10 to 15, it can be seen that only the IC tag 10 is incapable of communication. Based on this, the reader 20 recognizes the IC tag from the identification information of the IC tag 10. It can be determined that the container 1 is currently in a posture in which the bottom surface 2 on which the 10 is mounted faces vertically downward.

<Second example>
FIG. 5 is a perspective view of posture measuring instrument 60 according to the second example of Embodiment 1 of the present invention. That is, in the second example, the liquid 40 has a volume exceeding half of the internal volume of the container 1, and most of the container 1 is in contact with water. In other words, at this time, only the vicinity of the surface (the plane 3 in FIG. 5) positioned vertically above does not touch the water.

  In the state of FIG. 5, the bottom surface 2 faces vertically downward, but since water is in contact with most of the inner surface of the container 1, only the IC tag 11 can communicate, and the other IC tags 10, 12 to 15 is in a state where communication is impossible.

  At this time, when the reader 20 tries to communicate with each of the IC tags 10 to 15, it can be seen that only the IC tag 11 can communicate, and based on this, the reader 20 determines from the identification information of the IC tag 11 that the IC tag 11 It can be determined that the container 1 is currently in a posture in which the plane 3 on which 11 is mounted faces vertically upward, in other words, the bottom surface 2 facing the plane 3 faces vertically downward.

(Embodiment 2)
FIG. 6 is a perspective view of the posture measuring instrument according to Embodiment 2 of the present invention. In the first embodiment, the container 1 has a cubic shape, but in the second embodiment, the container 41 has a cylindrical shape.

  Also in this case, the IC tags 10 and 11 may be attached to the flat surface and the bottom surface, respectively, and the plurality of IC tags 12 and 14 may be attached to the inner side of the peripheral surface at intervals. Other points may be the same as those in the first embodiment.

  Further, the container may be a sphere, and the containers 1 and 41 of the first and second embodiments may be used as an outer container that circumscribes the sphere. When the IC tag is mounted inside the spherical container, the IC tag can be freely mounted in accordance with the direction to be measured. However, it is inevitable that the IC tag is more complicated than the first and second embodiments.

(Embodiment 3)
FIG. 7 is a block diagram of an IC tag according to Embodiment 3 of the present invention, and FIG. 8 is an operation flowchart of the IC tag.

  In the first and second embodiments, the case where the IC tag is a passive type has been described. The IC tag in Embodiment 3 is an active type. That is, as shown in FIG. 7, a battery 42, a temperature sensor 43, and a timer 44 are added to the IC tag so that the IC tag can operate independently without receiving electric power from radio waves.

  The IC tag in FIG. 7 is mainly assumed to be used for a formwork described later. That is, it is known that when concrete comes into contact with the formwork and hardening of the ready-mixed concrete starts, the ready-mixed concrete reaches a setting temperature exceeding the temperature.

  Focusing on this point, the IC tag of FIG. 7 performs the following operation as shown in FIG.

  First, in step 1, the timer 44 is reset, and a standby mode (preferably a low voltage operation is preferable) is started.

  Next, in step 2, the IC chip 17 checks the value of the timer 44 to check whether a preset time has elapsed. If not, the standby mode is continued.

  If the predetermined time has elapsed, then in step 3, the IC chip 17 checks the measured value of the temperature sensor 43 to check whether the curing temperature has been reached. If not, the IC chip 17 returns the process to step 1 to continue the standby mode.

  If the curing temperature is reached, the IC chip 17 starts communication with the reader 20 in step 4.

  In such a case, it is desirable that the reader 20 be installed near the construction site. If it does so, it can test | inspect sequentially whether the construction according to a predetermined procedure is implemented for every formwork.

  In other words, the contractor is constantly monitoring his / her work, and if he / she performs the omission work or sloppy work, he / she is immediately transferred to the general contractor or the owner. In other words, from the general contractor or the owner, it is not necessary to go to the site and monitor the contractor in detail, and since it is possible to immediately know whether the construction is correct or incorrect, the practical effect is great.

(Application example 1)
9 and 10 are perspective views showing an application example 1 of the posture measuring instrument according to the first to third embodiments of the present invention.

  In this application example, the posture measuring instrument 60 is mounted on the exposed surface 52 of the mold body 50 opposite to the pressing surface 51 that contacts the ready-mixed concrete. The following description will be made assuming that the bottom surface 2 is bonded to the exposed surface 52.

  As described in the “Background Art” section, the formwork has a different curing period between the horizontal posture shown in FIG. 9 and the vertical posture shown in FIG. Cannot be performed.

  When the formwork is in the horizontal posture shown in FIG. 9, since the bottom surface 2 is bonded to the exposed surface 52, the plane 3 facing the bottom surface 2 faces vertically downward.

  At this time, if a small amount of liquid 40 is placed in the container as shown in FIG. 4, only the IC tag 11 mounted on the plane 3 becomes unable to communicate, and the other IC tags 10, 12 to 15 communicate with each other. It becomes possible.

  On the other hand, as shown in FIG. 5, if a large amount of liquid 40 is put in the container, only the IC tag 10 attached to the bottom surface 2 can communicate, and the other IC tags 11 to 15 cannot communicate. .

  Therefore, as described in the first embodiment, it is possible to know that the formwork is in a horizontal posture based on a pattern in which the IC tag can communicate or cannot communicate.

  On the other hand, when the mold is in the vertical posture shown in FIG. 10, since the bottom surface 2 is bonded to the exposed surface 52, the surface excluding the bottom surface 2 and the plane 3 (front surface 4, back surface 5, right side surface 6 or left side). One of the surfaces 7) (the front surface 4 in the example of FIG. 10) faces vertically downward.

  At this time, as shown in FIG. 4, if a small amount of liquid 40 is put in the container, only the IC tag 12 mounted on the front surface 4 becomes incapable of communication, and the other IC tags 10-11 and 13-15 are Communication becomes possible.

  On the other hand, as shown in FIG. 5, if a large amount of liquid 40 is put in the container, only the IC tag 13 attached to the back surface 5 can communicate, and the other IC tags 11 to 12 and 14 to 15 Communication is disabled.

  Therefore, as described in the first embodiment, it is possible to know that the formwork is in a vertical posture based on a pattern in which the IC tag can communicate or cannot communicate.

  The above points are almost the same in the second and third embodiments. Furthermore, according to the third embodiment, it is possible to manage whether or not the curing temperature has been reached, which is preferable.

(Application example 2)
FIG. 11: is a perspective view which shows the application example 2 of the attitude | position measuring device which concerns on Embodiment 1-3 of this invention.

  In this application example, the posture measuring device 60 is applied to a packaging box 70 (for example, a cardboard box). For example, some packages are fragile, or some packages, such as precision instruments, are not enough to be placed in the packing box 70, and the posture should be managed.

  In such a case, the following is preferable. That is, the packing box 70 is usually enclosed with a protective member 71 made of foam or the like in order to protect the luggage.

  A recess 72 is formed at an appropriate position of the protection member 72, and the posture measuring instrument 60 is accommodated in the recess 72.

  If it does so, the packing box 70, a package, the protection member 72, and the attitude | position measuring device 60 will always take the same attitude | position. Therefore, description of Embodiment 1-3 is materialized similarly, and the attitude | position of the packaging box 70 can be managed.

  Here, if the readers 20 are arranged in the luggage collection / delivery facility (around the belt conveyor for moving the luggage), the truck for transporting the luggage, the warehouse of the ship, etc. It is possible to reliably check whether the paper is conveyed in the correct posture. Moreover, this check does not require complicated work such as image processing.

  If the transport operator knows this fact, it is clear that rough handling will immediately lead to the management company, the client, etc., so it is easy to ensure appropriate work.

  Particularly, it is suitable for a case where an art object, a work of art, a famous instrument, or an expensive article that is expensive and never available again should be conveyed carefully.

  The attitude measuring device itself can be mass-produced at low cost, and the cost will not increase so much as the reader is appropriately arranged. Rather, it can be said that it is easy to put to practical use because the reliability of conveyance can be improved.

  The posture measuring instrument of the present invention can be suitably used in, for example, the technical field for managing the posture of a formwork, a baggage, and the like.

Fig. 3 is a development view of the posture measuring instrument according to Embodiment 1 of the present invention. The block diagram of the attitude | position measurement system in Embodiment 1 of this invention (A) Cross section of IC tag in Embodiment 1 of the present invention (b) Cross section of IC tag in Embodiment 1 of the present invention The perspective view of the attitude | position measuring device which concerns on the 1st example of Embodiment 1 of this invention. The perspective view of the attitude | position measuring device which concerns on the 2nd example of Embodiment 1 of this invention. The perspective view of the attitude | position measuring device in Embodiment 2 of this invention Block diagram of an IC tag in Embodiment 3 of the present invention Operation flowchart of IC tag in embodiment 3 of the present invention The perspective view which shows the application example 1 of the attitude | position measuring device which concerns on Embodiment 1-3 of this invention. The perspective view which shows the application example 1 of the attitude | position measuring device which concerns on Embodiment 1-3 of this invention. The perspective view which shows the application example 2 of the attitude | position measuring device which concerns on Embodiment 1-3 of this invention.

DESCRIPTION OF SYMBOLS 1, 41 Container 2 Bottom surface 2a Mounting surface 3 Plane 4 Front surface 5 Back surface 6 Right surface 7 Left side surface 16, 21 Antenna 17 IC chip 20 Reader 22 Tuner 23 Reader IC
24 interface 25 CPU
26 Memory 27 Keyboard 30 IC tag body 31 Blocking film 32 Protective film 40 Liquid 42 Battery 43 Temperature sensor 44 Timer 50 Mold 51 Pressing surface 52 Exposed surface 53 Rib 70 Packing box body 71 Protective member 72 Recess

Claims (11)

A container formed to hold a liquid therein;
A plurality of IC tags attached to the inner surface of the container at different positions;
A posture measuring instrument comprising: a liquid held in the container and in contact with an IC tag positioned vertically below the container among the plurality of IC tags according to the posture of the container. The posture measuring instrument according to claim 1, wherein a blocking film that blocks radio waves in a predetermined frequency band used by the plurality of IC tags for communication is provided between the plurality of IC tags and the inner surface of the container. The attitude measuring instrument according to claim 1 or 2, wherein a protective film is provided on a surface of the plurality of IC tags facing the inside of the container. The posture measuring instrument according to claim 2, wherein the predetermined frequency band is a 2.45 GHz band, and the liquid is water. The posture measuring instrument according to any one of claims 1 to 4, wherein the liquid has a volume equal to or less than half of an internal volume of the container. The posture measuring instrument according to any one of claims 1 to 4, wherein the liquid has a volume exceeding half of an internal volume of the container. The attitude measuring instrument according to any one of claims 1 to 6, wherein the container has a cubic shape, and the plurality of IC tags are attached to each surface of the cube. An attitude measuring instrument according to any one of claims 1 to 7;
A reader that communicates with the plurality of IC tags using radio waves in a predetermined frequency band;
The reader is an attitude measurement system that determines that the IC tag that is in contact with the liquid and cannot communicate among the plurality of IC tags is in an attitude that is vertically downward. An attitude measuring instrument according to any one of claims 1 to 7;
A formwork provided with a formwork body to which the posture measuring instrument is attached. An attitude measuring instrument according to any one of claims 1 to 7;
A packing box comprising a packing box main body for storing the posture measuring instrument. The packaging box according to claim 10, further comprising a protection member that protects a package to be packed, wherein the posture measuring instrument is housed in the protection member.

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