JP2011058198A - Method and system for determining filling, and communication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for determining filling, which determines that a fluid material poured into a form is infilled into a space in the form, by means of a communication device. <P>SOLUTION: This method for determining filling includes: an installation step of installing the communication device 10, which comprises a measuring means for measuring a physical quantity and a communication means for transmitting information, based on a result measured by radio communication, to a reader, in a specific position in the space formed by the form 2; a pouring step of pouring the fluid material into the space in which the communication device 10 is installed; a reception step of receiving information based on the result of measurement transmitted by the communication device 10, by using the reader; and a determination step of detecting contact between the fluid material and a casing of the communication device 10 when the received information meets a specific condition, and of determining that the fluid material is infilled in a position, in which the communication device 10 is installed, in the space formed by the form 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a filling determination method, a filling determination system, and a communication device.

  When building a building or the like, a technique for confirming a filling state in a wide space in order to fill a fluid material such as concrete without gaps in a mold is known. In Patent Document 1, an electronic tag unit that transmits a wireless identification signal is attached to a plurality of predetermined positions in a gap into which a liquid substance is injected, and a signal from the electronic tag unit is injected during or after injection of the liquid substance into the gap. A technique for confirming the filling of the liquid substance when the reading of is stopped is disclosed. However, in the above-described technique for confirming filling when communication is stopped, there are cases where it is determined that the electronic tag unit is filled, for example.

JP 2006-299604 A

  An object of the present invention is to provide a filling determination method for accurately determining that a flowing material poured into a mold is filled in a space in the mold as compared with the prior art.

  The present invention is a filling determination method for determining, using a communication device, that a space formed by a mold used for curing a flowing material is filled with the material, the housing of the communication device A communication device comprising: a measuring unit that measures a physical quantity for detecting contact between the material and the material; and a communication unit that transmits information according to a measurement result in the measuring unit to another device by wireless communication. An installation process of installing at a specific position, a pouring process of pouring the material into the space in which the communication device is installed, a receiving process of receiving information according to the measurement result by the other apparatus, And a determination process for determining that the material is filled in the space when the information received in the reception process satisfies a specific condition. That. According to this filling determination method, it is possible to accurately determine that the flowing material poured into the mold is filled in the space in the mold compared to the conventional method.

  In another preferable aspect, the wireless communication in the communication means may use electromagnetic induction. According to this filling determination method, wireless communication can be performed even when the communication device is covered with a fluid material containing moisture or a metal mold.

  In another preferred embodiment, the raw material of the portion covering the surface of the housing may include at least a part of the raw material blended with the material. According to this filling determination method, the communication device can be integrated with the cured material to maintain the hardness.

  In another preferable aspect, the housing may be spherical. According to this filling determination method, the communication device disperses the pressure from the flowing material over the entire housing, so that the strength for preventing the deformation of the housing due to the pressure and the malfunction of the communication device due to the deformation can be increased. it can.

  In another preferred embodiment, the measuring means may measure a pressure received from a substance that contacts the casing or a temperature transmitted from the substance that contacts the casing. According to this filling determination method, the housing can be processed more easily than a communication device in which a portion of the measuring portion is exposed on the surface of the housing in order to bring the measuring portion into contact with the substance. The increase in manufacturing cost can be suppressed.

  In another preferred embodiment, the measurement means includes a contact measurement unit that is provided to be exposed on the surface of the housing and measures a physical quantity of the substance in contact with the measurement unit, and measures the physical quantity of the substance in contact with the contact measurement unit. May be. According to this filling determination method, the communication apparatus can measure the physical quantity more accurately and more quickly than when the contact measurement unit is not provided.

  In another preferred aspect, the communication device includes time information output means for outputting time information indicating time, time information output by the time information output means, and information according to the physical quantity measured by the measurement means. Storage means for storing the information in association with each other, and the information transmitted by the communication means transmits the time information and the information stored in association with the storage means. According to this filling determination method, the determination can be made based on the temporal change of the physical quantity.

  Further, the present invention is a filling determination system for determining that a space formed by a mold used for hardening a flowing material is filled with the material, and is installed at a specific position in the space. A communication device and a determination device used outside the space, wherein the communication device is configured to measure a physical quantity for detecting contact between a housing of the communication device and the material, and wireless communication. Communication means for transmitting information corresponding to the measurement result in the measurement means to the determination device, the determination device receiving information corresponding to the measurement result transmitted by the communication means, and A filling judgment comprising: a judgment means for judging that the material is filled in the space when the information received by the receiving means satisfies a specific condition; To provide a stem. According to this filling determination system, it is possible to accurately determine that the flowing material poured into the mold is filled into the space in the mold compared to the conventional case.

  In addition, the present invention provides a housing, a measuring unit for measuring a physical quantity for detecting contact between the housing and the flowing material, and information according to a measurement result in the measuring unit by wireless communication. The communication device is provided at a specific position in a space formed by a mold used for curing the flowing material. According to this communication device, it can be determined with higher accuracy than before that the flowing material poured into the mold is filled in the space in the mold.

It is a general-view figure of the formwork used for concrete placement concerning this embodiment. It is a figure explaining the space 6 in a formwork. It is a figure which shows a mode that the communication apparatus 10 and the reader 20 communicate. 1 is a block diagram of a filling determination system 1. FIG. 1 is a block diagram of a communication device 10. FIG. 2 is a block diagram of a reading device 20. FIG. It is a flowchart of the filling determination method which concerns on this embodiment. 3 is a schematic diagram showing the inside of a mold 2; FIG. It is a graph which shows an example of the temperature change of each part in this embodiment. 4 is a sequence chart showing operations of the communication device 10 and the reading device 20. It is sectional drawing which shows the cross section of the mold frame 2 which concerns on the modification 1. As shown in FIG. It is a general-view figure of the communication apparatuses 10c and 10d which concern on the modification 2. It is a figure which shows the communication apparatuses 10e and 10f which concern on the modification 3. It is a figure which shows the communication apparatus 10g which concerns on the modification 3.

<Embodiment>
[Constitution]
FIG. 1 is a schematic view of a mold used for placing concrete according to the present embodiment. First, a mold 2 shown in the figure is a mold formed of a steel plate, wood, or the like, and is installed on a foundation 4, and is formed in an internal space formed by itself (hereinafter referred to as a mold internal space 6). The concrete to be poured is guided so as to have a predetermined shape. The reinforcing bar 3 is a rod-shaped material made of metal such as iron, and is installed in the space 6 in the formwork to reinforce the strength after the concrete is hardened to become hardened concrete. The foundation 4 is made of a material such as concrete and supports an upper structure such as a pillar or a wall. Concrete is a fluid material produced by mixing raw materials such as gravel and water with cement. In addition, mortar, cement, etc. are used as the fluidized material, and these materials are fluid at the beginning of pouring, so they reach every corner of the space 6 in the mold and harden over time. Form part of a building such as a pillar or wall. In this example, the concrete is poured into the formwork space 6 in the form of fluid fresh concrete, hardened by the hydration reaction of water and cement, and becomes a hardened concrete. Form. It is desirable that the poured concrete is filled to every corner of the space 6 in the mold before it is hardened. In order to determine that this filling has been completed, in the present embodiment, a communication device having a communication function described below is installed in the space 6 in the formwork.

  FIG. 2 is a diagram for explaining the in-formwork space 6. FIG. 4A is a plan view of the mold 2 as viewed from above. FIG. 2B is a cross-sectional view taken along the cutting line IIb-IIb ′ in FIG. In this figure and subsequent figures, horizontal reinforcing bars are omitted. Each communication device 10-1, 10-2, 10-3 (hereinafter referred to as communication device 10 when not distinguished from each other) shown in these figures is installed at a specific position in the space 6 in the mold, Information for detecting whether or not the poured concrete has contacted the own device is transmitted by the configuration and operation described later. In this example, each of the communication devices 10-1, 10-2, 10-3 is not fixed to the surface of the foundation 4 and is in contact with the corners formed by the side surfaces of the formwork 2 without being fixed to the surface of the foundation 4. It is installed at a position in contact with the side surface of the mold 2 and a corner position formed by the side surfaces of the mold 2 apart from the foundation 4. The communication device 10 may be installed at any position where a poured void of the poured concrete is likely to occur, and the quantity is determined in consideration of the influence of the communication device 10 on the strength of the hardened concrete. Just decide. The communication device 10 installed at a position away from the foundation 4 is fixed to the reinforcing bar 3 with a wire (not shown). The information transmitted by the communication device 10 is received by a reading device having a communication function that is operated outside the mold 2.

  FIG. 3 is a diagram illustrating a state in which the communication device 10 and the reading device 20 communicate with each other. The communication device 10 includes a wireless tag 110 and a housing 120 having a wireless communication function, and communicates with the reading device 20 outside the mold 2. This wireless communication is performed using a long wave (LF: Low Frequency) having a frequency of about 131 kHz by an electromagnetic induction communication means. The communication device 10 and the reading device 20 communicate with each other even in a state where a formwork 2 having wood or metal or concrete containing moisture is sandwiched between them because a long wave band frequency that is not easily affected by an obstacle is used. Can do. In addition, this communication is performed in both directions, and approximately several meters is an effective communication distance.

The casing 120 has cement and gravel as raw materials for concrete, and these raw materials are formed in a spherical shape covering the surface portion, and protect the wireless tag 110 from the pressure and moisture of the filled concrete, It is formed so as to transmit the temperature transmitted from the substance in contact with the inside. By forming in a spherical shape in this way, the casing 120 can increase the strength for preventing deformation and problems due to the pressure of the material. Further, when the concrete is hardened, the surface of the housing 120 can be integrated with the hardened concrete to maintain the hardness of the concrete. The housing 120 may have various shapes such as a tetrahedron, a hexahedron, an octahedron, or an egg shape in addition to a spherical shape.
The wireless tag 110 includes a sensor unit 112 (see FIG. 5) having a temperature sensor, and measures a temperature transmitted from a substance in contact with the housing 120. The wireless tag 110 includes a clock unit 116 (see FIG. 5) that outputs time information indicating time, and associates the output time information with the measured temperature. In this way, the wireless tag 110 generates history information (hereinafter referred to as temperature history information) indicated by the measured temperature and the associated time information. The wireless tag 110 transmits a signal indicating the temperature history information to the outside by an operation described later. In the communication device 10, the housing 120 transmits the temperature to the sensor unit in this way, and thus there is no need to expose a measurement site from the sensor unit to the outside. For this reason, the housing 120 can be easily processed, and an increase in manufacturing cost can be suppressed.

  The reading device 20 has a communication function, receives a signal transmitted from the communication device 10, and reads information indicated in the signal. The display screen 241 has a screen such as a liquid crystal display, and displays the above-described read information, information generated by the reading device 20 based on this information, and the like. The operation element 251 has a plurality of buttons or a touch panel and has an input function to the reading device 20. The user operates the reading device 20 with the operator 251. Further, the reading device 20 transmits a signal requesting to transmit the generated information to the communication device 10, and the communication device 10 performs the above-described transmission operation when receiving this signal. As described above, the communication device 10 and the reading device 20 function as one system that determines whether concrete is filled in the space around the communication device 10 by an operation described later while communicating with each other. This system is referred to as a filling determination system 1.

  FIG. 4 is a block diagram of the filling determination system 1. As shown in the figure, the reading device 20 communicates with a plurality of communication devices 10. Since this communication has an effective communication distance of about several meters as described above, there are cases where a plurality of communication devices 10 are in positions where communication is possible. In order to distinguish information from the plurality of communication devices 10, for example, an identification number for identifying the communication devices 10 is determined in advance, and communication is performed using a signal to which the identification numbers are added. Each communication device 10 stores information of a unique identification number, and when receiving a request signal that matches this identification number, performs transmission to the reading device 20. If there is no transmission for a predetermined period, the reading device 20 transmits a request signal to the communication device 10 having the next identification number. In this way, the reading device 20 controls so that signals transmitted from the communication device 10 do not compete. Such a method for controlling a plurality of communications may be any method, and may be a method using a general anti-collision function.

  FIG. 5 is a block diagram of the communication device 10. The wireless tag 110 includes devices such as a sensor unit 112 that detects temperature and a communication unit 114 that communicates information with the reading device 20, and is a device that bears the main functions of the communication device 10. As shown in the figure, a control unit 111, a sensor unit 112, a storage unit 113, a communication unit 114, a power supply unit 115, and a clock unit 116 are connected to each other via a bus 101. The control unit 111 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU loads a program stored in the ROM into the RAM and executes the program. Thus, the control unit 111 performs control of each unit of the wireless tag 110 via the bus 101, calculation of information input to the control unit 111, storage of this information in the storage unit 113, and the like. The ROM stores an identification number for identifying the communication device 10 from other devices. When a request signal including the identification number for requesting the operation of a specific device is received, this ROM is used. Reference is made to the identification number. The clock unit 116 has a function of generating time information indicating the time, and is a time information output unit that outputs the time information to the control unit 111 at predetermined intervals. Using this time information, the control unit 111 performs control according to time or time such as date and time.

The sensor unit 112 includes a sensor for measuring temperature, measures the temperature of a substance that contacts the communication device 10 transmitted via the housing 120, generates this temperature information, and outputs the temperature information to the control unit 111. The storage unit 113 is a storage unit such as a nonvolatile memory, and stores information such as the temperature measured by the sensor unit 112.
Here, the control unit 111 performs an operation of measurement and output by the sensor unit 112, an operation of storing the temperature information input from the sensor unit 112 in the storage unit 113, and an operation of accumulating the temperature information by the storage unit 113. Each unit is controlled to be continuously performed at predetermined intervals. As a result, the above-described temperature history information is accumulated in the storage unit 113. The communication unit 114 has a wireless communication function and performs wireless communication with the reading device 20. The power supply unit 115 includes a primary battery and supplies power to each unit of the wireless tag 110. Thus, since the power supply unit 115 supplies power, each unit operates and temperature history information is accumulated even when the communication device 10 is not communicating.

  FIG. 6 is a block diagram of the reading device 20. The control unit 210 includes a CPU, a ROM, a RAM, and the like. The CPU loads a program stored in the ROM into the RAM and executes it. Thereby, the control unit 210 controls each unit of the reading device 20 via the bus 201. The communication unit 220 is a communication unit that exchanges information with the communication device 10 by wireless communication. Information read from the communication device 10 by communication is output to the control unit 210, and the control unit 210 stores this information in the storage unit 230.

The storage unit 230 is a storage unit such as a nonvolatile memory, and stores and accumulates read information. The display unit 240 has a display screen 241 formed of a liquid crystal screen or the like, and displays the read temperature information and information stored in the storage unit 230. The operation unit 250 includes an operation unit 251 having an input function such as a plurality of buttons or a touch panel, and is an operation unit that performs an operation for the user to instruct the reader 20 to select, confirm, cancel, and the like. Therefore, information indicating the operation content is output to the control unit 210. The interface 260 has a terminal connected to an external device such as a USB (Universal Serial Bus), and serves as an interface for exchanging information with an external device such as a computer.
Subsequently, an operation according to the present embodiment will be described with reference to FIGS.

[Operation]
FIG. 7 is a flowchart of the filling determination method according to the present embodiment. First, in the construction process, the communication device 10 is installed at the specific position described above at the stage before the concrete is introduced and when the communication device 10 is ready to be installed such as the installation of the reinforcing bars 3 (step S100). . In this example, these communication devices 10 are installed at the positions shown in FIG. At this time, processing for starting the operation of accumulating the temperature history information of the communication device 10 is performed. Next, the concrete in the state of fluid fresh concrete is poured into the internal space formed by the mold 2 (step S200). After the concrete pouring is completed, until the concrete is hardened to become hardened concrete, a filling determination process is performed (step S300), and it is determined whether or not the filling of the space around the communication device 10 is completed. . At this time, the space around the communication device 10 that is determined not to be filled is determined to be a gap, and an operation for eliminating the gap is performed using a vibrator or the like. The incompleteness of the filling, that is, the presence or absence of voids is confirmed as follows.

  FIG. 8 is a schematic view showing the inside of the mold 2. As shown in the drawing, the space around the communication device 10-1 is filled with concrete 5, and a space is generated in the space around the communication device 10-2. In the communication device 10-1, the temperature of the surrounding air is measured before pouring the concrete 5, and when the concrete 5 comes into contact with the communication device 10-1 after pouring, the temperature of the concrete 5 is measured. At this time, it is detected in the history of the temperature measured by the communication device 10-1 that the temperature difference between the concrete 5 and the surrounding air changes in a short time. On the other hand, in the communication device 10-3, the temperature of the surrounding air is measured even after the concrete 5 is poured. In this case, since there is a heat capacity of air, the temperature changes more slowly than in the case of direct contact with the concrete 5, and the temperature may not be the same as that of the concrete 5. The state of these temperature changes will be described using an example.

  FIG. 9 is a graph showing an example of the temperature change of each part in the present embodiment. The vertical axis of this graph represents temperature Temp, and the horizontal axis represents time t. FIG. 5A shows temporal changes in the temperature MTI, the temperature CT of the concrete 5, and the outside air temperature AT measured by the communication device 10-1. In other words, the temperature MTI is a graph representing the temperature history information accumulated in the communication device 10-1. Time t1 shown in this graph is the time when pouring of the concrete 5 is started. Generally, the concrete from several hours to several days after pouring is in a state where heat is generated due to the hydration reaction of water and cement, so that it is higher than the outside air temperature AT as shown by the temperature CT in the figure. It becomes temperature. For this reason, the temperature MTI measured by the communication device 10-1 is close to the outside air temperature AT before filling, and when the concrete 5 starts pouring at time t1, the surrounding air is warmed by the concrete 5 and gradually rises. And when the communication apparatus 10 and the concrete 5 contact, since the communication apparatus 10 measures temperature CT of the concrete 5, as shown by the time t2 of this graph, temperature MTI rises instantaneously.

  On the other hand, FIG. 9B shows temporal changes of the temperature MTIII, the temperature CT of the concrete 5, and the outside air temperature AT measured by the communication device 10-3. That is, the temperature MTIII is a graph representing the temperature history information accumulated in the communication device 10-3. The time t1 shown in this graph is also the time when the pouring of the concrete 5 is started. As described above, when the space around the communication device 10-3 is a gap, the air occupying the gap is warmed by the heat of the concrete 5, but because of the heat capacity of the air, compared with the case where it contacts the concrete 5. The temperature change is performed slowly. In addition, since this gap is in contact with the mold 2 and the foundation 4 as shown in FIG. 8 and is also affected by these temperatures, the temperature MTIII measured by the communication device 10-3 is up to the temperature CT of the concrete 5. Not reach.

  Thus, the temperature history information accumulated by the communication device 10 shows different changes depending on the presence or absence of contact with the concrete 5. The above-described filling determination system 1 detects the presence or absence of this contact from the difference in temperature change, and thereby determines the filling of the concrete 5. For example, the filling determination system 1 calculates the difference between the temperature value at each time of the temperature history information and the temperature value measured at the previous time (hereinafter referred to as a temperature fluctuation amount), and A time at which the fluctuation amount is equal to or greater than a predetermined value is detected. Immediately before this detected time, it is considered that there was an instantaneous temperature change, that is, the contact between the communication device 10 and the concrete 5. In this way, the filling determination system 1 detects the contact between the communication device 10 and the concrete 5 from the temperature history information. In this case, it is assumed that the time interval for measuring the temperature is determined so that the temperature change due to the contact with the concrete 5 is distinguished from the temperature change due to the temperature change.

  In addition, you may detect when the value of the temperature measured becomes more than a predetermined value. Alternatively, a case may be detected in which the temperature fluctuation amount at each time differs by a predetermined value or more with respect to the temperature fluctuation amount at the previous time. Thus, when the temperature history information satisfies these specific conditions, the filling determination system 1 detects the contact between the communication device 10 and the concrete 5. These conditions may be determined according to the temperature characteristics of the concrete 5 and the difference in temperature depending on the season. In this way, contact between the communication device 10 and the concrete 5 is detected, and in the above-described filling determination process (step S300), when contact with the concrete 5 is detected in all the communication devices 10, the space in the formwork It is determined that the filling of concrete 5 into 6 is completed. Next, specific operations of the communication device 10 and the reading device 20 in the filling determination process will be described next.

  FIG. 10 is a sequence chart showing operations of the communication device 10 and the reading device 20. The reading device 20 transmits a signal for requesting transmission of temperature history information to the communication device 10-1 by a signal instructing a user operation or an operation from another device (step S310). When receiving the signal requesting the transmission, the communication device 10-1 generates information to be transmitted to the reading device 20 from the accumulated temperature history information (step S320), and transmits the generated information (step S330). The reading device 20 receives the temperature history information and stores it in the storage unit 230 (step S340). The reading device 20 sequentially performs this series of operations on the communication devices 10-1, 10-2, and 10-3. When the worker requests transmission of temperature history information, the requested time range may be specified. In that case, the communication device 10-1 may generate the temperature history information in the specified time range as the transmission information.

  When the reading device 20 detects a temperature fluctuation amount that is equal to or greater than a predetermined value in the temperature history information of each communication device 10 read in this way, the reading device 20 transmits the temperature history information including the temperature fluctuation amount. A contact between the communication device 10 and the concrete 5 is detected. The operation for detecting this contact is performed for each communication device 10 (step S350). When this contact is detected from all the communication devices 10, it is determined that the filling of the concrete 5 into the gap AS is completed (step S360). ). If it is determined that the filling is completed, display information indicating the determination result of the filling completion is generated and displayed on the display screen 241 (step S370). If it is determined that the filling is not completed, display information indicating a determination result that the filling is not completed is generated and displayed on the display screen 241 (step S380).

    Here, the reading device 20 holds, for example, coordinate information of a position where each communication device is obtained in advance by designing or surveying a construction object in association with an identification number of each communication device. The identification number may indicate a position where the communication device 10 is installed by a symbol. And when generating the display information of the determination result that the above-mentioned filling is incomplete, based on the coordinate information and the identification number, the information of the position of the communication device 10 that has not yet been detected is displayed together. . In addition, since the communication apparatus 10 is constantly operating by the power supplied by the power supply unit 115, for example, when an abnormality in the temperature history information is detected such that the temperature does not change, the communication apparatus that generated the temperature history information 10 may indicate that a problem has occurred. In this way, the reading device 20 functions as a device that determines that the filling of the concrete 5 into the gap AS has been completed. As described above, the reading device 20 functions as a device that determines whether or not the filling of the concrete 5 into the mold space 6 is completed.

  Further, the operation after the contact detection process may be performed by an external device such as a computer connected to the reading device 20. In this case, the operator confirms the result of the filling determination process on the screen on the display device connected to the external device. Further, the reading device 20 may display the read temperature history information as it is or process it into a graph or the like and display it on the display screen 241, and the operator may determine filling based on this content. In addition, the contact detection process may be performed by the communication device 10. In this case, the information transmitted to the reading device 20 is determination information indicating the result of contact detection.

  As described above, when the filling determination method according to the present embodiment is used using the filling determination system 1, the communication device 10 installed in the mold space 6 continuously measures the ambient temperature, and this measurement is performed. Temperature information is accumulated, and temperature history information based on the accumulated information is generated. Subsequently, the reading device 20 performs wireless communication with the communication device 10 by a method that is not easily influenced by water or metal, reads the temperature history information, and detects contact between the communication device 10 and the concrete 5 from the temperature history information. To do. And the filling determination system 1 will determine with the filling of the concrete 5 to the space 6 in a formwork having been completed, if this contact is detected in all the communication apparatuses 10. FIG. Thus, in the filling determination system 1, communication can be performed even in a state covered with the concrete 5 by using a long wave signal for wireless communication. In addition, by continuously operating the communication device 10 having a primary battery, it is possible to distinguish between information due to malfunction of the communication device 10 and information due to normal operation from the contents of accumulated temperature history information, and erroneous determination Can be avoided. For this reason, according to this filling determination method, it is possible to accurately determine that the flowing material poured into the gap is filled in the mold space 6 compared to the conventional case.

As mentioned above, although embodiment of this invention was described, this invention can be implemented with a various form as follows.
<Modification 1>
In the embodiment described above, the communication device 10 uses the wireless tag 110 covered with the casing 120 having a raw material such as cement or gravel. However, the wireless tag is covered with a casing 120p of general plastic or the like. 110 may be used. In this case, the casing 120p is used having a performance of protecting the internal device from moisture and pressure by the concrete 5.

  FIG. 11 is a cross-sectional view showing a cross section of the mold 2 according to the first modification. The communication device 10p is directly installed on the surface of the foundation 4 or fixed to the reinforcing bar 3 with a wire or the like. The communication device 10p detects temperature information by the same operation as the communication device 10, and the reading device 20 reads this temperature information and determines whether the position of the communication device 10p is filled with concrete 5.

<Modification 2>
In the embodiment described above, the sensor unit 112 included in the communication device 10 measures the temperature in order to detect contact between the housing 120 of the communication device 10 and the concrete 5, but in addition, the housing 120 of the communication device 10 is in contact. You may measure physical quantities, such as the pressure received from a substance, pH (potential Hydrogen) of this substance, or a moisture content. In any case, since the measured physical quantity value differs between the case where the casing 120 is in contact with air and the case where it is in contact with the concrete 5, for example, those read by the reading device 20 from the communication device 10. When the value indicating the amount of change in the physical quantity is equal to or greater than a predetermined value, it is determined that the filling has been performed. When measuring the pressure, the housing 120 is formed so as to transmit the pressure received from the substance with which the casing 120 contacts. Further, when measuring pH and moisture content, it is necessary that a part of the sensor unit 112 is in direct contact with a substance that is in contact with the housing 120.

  FIG. 12 is an overview of communication devices 10c and 10d according to the second modification. The wireless tag 110c shown in FIG. 11A has a contact measurement unit 121c that detects a physical quantity of a substance to be contacted, and is connected to the contact measurement unit 121c by wiring. The case 120c has a region for exposing the contact measurement unit 121c to the surface of the case 120c, and the contact measurement unit 121c is formed in this region so as to be in contact with an external substance. As described above, the communication device 10c is provided so that the contact measurement unit 121c is exposed on the surface of the housing 120c, and measures the pH or moisture content of a substance such as air or concrete 5 that contacts the contact measurement unit 121c. The communication device 10c determines whether or not the concrete 5 is filled in the position of the communication device 10c by measuring the pH or moisture content. Thereby, the choice of the physical quantity to be measured can be increased according to the characteristics of the concrete to be filled, etc., and the physical quantity can be measured more accurately and more quickly than when no contact measurement unit is provided. .

Moreover, you may form multiple contact measurement parts 121d like the communication apparatus 10d shown in FIG.12 (b). For example, the housing 120d has areas for exposing six contact measuring parts 121d facing in the up / down / left / right and front / rear directions to the surface, and the contact measuring part 121d is fitted into these areas to form the housing 120d. To do. These contact measuring units 121d measure the physical quantities of the substances that come into contact with each other at predetermined intervals, and the measured physical quantities are stored in the storage unit 113 together with information on the time at which the measured physical quantities were measured. When the physical quantity measured for each contact measuring unit 121d is compared with time information, for example, it is determined that a part of the communication device 10 is in contact with the concrete 5 and the remaining part is still in contact with the gap. be able to.
When the physical quantity to be measured is temperature, for example, the reading device 20 generates information indicating the temperature gradient of the concrete 5 around the communication device 10 based on the temperature information measured by each contact measurement unit 121d. By generating this also in the communication device 10 installed at another position, information indicating the temperature gradient of the entire inside of the concrete 5 is generated. By using the information of the temperature gradient, it is possible to effectively perform the corresponding work for making the temperature inside the concrete 5 uniform.

<Modification 3>
In the embodiment described above, the communication device 10 is fixed to the reinforcing bar 3 with a wire or the like. However, the communication device 10 may be provided with a method of fixing to the reinforcing bar 3 in advance. For example, a leg portion that opens and closes from the housing 120 is provided, and the leg portion is deformed during installation to hold the communication device 10 with the rebar 3 interposed therebetween. In addition, in order to easily fix the communication device 10 to the reinforcing bar 3, a rod used at the time of fixing extending from the housing 120 may be provided. Moreover, since it installs in the position away from the reinforcing bar 3, you may equip the bar | burr fixed to the reinforcing bar 3 with the site | part which fixes the stick | rod which supports the communication apparatus 10 with a screw.

  FIG. 13 is a diagram illustrating communication devices 10e and 10f according to the third modification. The communication device 10e shown in FIG. 6A includes a leg 121e that opens and closes by the action of rubber or a spring, and is fixed to the reinforcing bar 3 by the leg 121e. FIG. 2C shows a state in which the communication device 10e is fixed to the reinforcing bar 3. Further, the communication device 10f shown in FIG. 5B has a rod-shaped part 121f fixed to the housing 120f, and is fixed to the reinforcing bar 3 by winding a wire 122f around the part 121f. FIG. 2C shows a state in which the communication device 10f is fixed to the reinforcing bar 3. Since these communication devices 10e and 10f are firmly fixed to the reinforcing bar 3 as compared with the communication device 10, it is possible to prevent the concrete 5 from contacting and shifting its position.

  FIG. 14 is a diagram illustrating a communication device 10g according to the third modification. The communication device 10g has a part 121g fixed to the housing 120g and a part 122g that fixes the part 121g with a screw 123g, and is fixed to the reinforcing bar 3 by winding the wire 124g around the part 122g. The fixing position of the part 121g with respect to the part 122g is adjusted by a screw 123g. Thereby, the housing | casing 120g of the communication apparatus 10g can be fixed to the edge part of the space 6 in a formwork which is easy to generate | occur | produce a space | gap irrespective of arrangement | positioning of the reinforcing bar 3. FIG.

<Modification 4>
In the present embodiment, communication means using an electromagnetic induction method is used. However, when the communication device 10 is installed so as to be in contact with the formwork 2, communication means using a radio wave method may be used. In this case, the communication device 10 is not covered in all directions by the concrete 5, and communication with the reading device 20 is performed from the direction of the mold 2. Thereby, compared with the case where an electromagnetic induction system is used, the effective communication distance with the reader 20 can be lengthened.

  DESCRIPTION OF SYMBOLS 1 ... Filling determination system, 2 ... Formwork, 3 ... Reinforcing bar, 4 ... Foundation, 5 ... Concrete, 10, 10-1, 10-2, 10-3, 10d, 10e, 10f, 10g, 10p ... Communication apparatus, DESCRIPTION OF SYMBOLS 20 ... Reading apparatus, 110, 110c, 110d ... Wireless tag, 120, 120c, 120d, 120e, 120f, 120g, 120p ... Housing, 121c, 121d ... Contact measurement part, 121e ... Leg part, 121f, 121g, 122g ... Part, 122c, 122d ... wiring, 122f, 124g ... wire, 123g ... screw, 241 ... display screen, 251 ... operator

Claims (9)

A filling determination method for determining, using a communication device, that a material formed in a space formed by a mold used for curing a flowing material is filled,
Measuring means for measuring a physical quantity for detecting contact between the housing of the communication device and the material, and communication means for transmitting information according to the measurement result of the measuring means to another device by wireless communication An installation process of installing a communication device at a specific position in the space;
A pouring process for pouring the material into the space in which the communication device is installed;
A receiving process of receiving information according to the measurement result by the other device;
And a determination step of determining that the material is filled in the space when information received in the reception process satisfies a specific condition. The filling determination method according to claim 1, wherein the wireless communication in the communication unit uses electromagnetic induction. The filling determination method according to claim 1, wherein the raw material of the portion covering the surface of the casing includes at least a part of the raw material blended with the material. The filling determination method according to claim 1, wherein the casing is spherical. 5. The measurement unit according to claim 1, wherein the measurement unit measures a pressure received from a substance in contact with the casing or a temperature transmitted from the substance in contact with the casing. Filling judgment method. The measurement means is provided to be exposed on the surface of the housing, has a contact measurement unit that measures a physical quantity of a substance in contact, and measures a physical quantity of a substance in contact with the contact measurement unit. The filling determination method according to any one of claims 1 to 5. The communication device
Time information output means for outputting time information indicating the time;
Storage means for storing the time information output by the time information output means and the information corresponding to the physical quantity measured by the measurement means in association with each other;
The filling determination method according to any one of claims 1 to 6, wherein the information transmitted by the communication unit transmits the time information and the information stored in association with the storage unit. . A filling determination system for determining that a space formed by a mold used for curing a flowing material is filled with the material,
A communication device installed at a specific position in the space;
A determination device used outside the space, and
The communication device
Measuring means for measuring a physical quantity for detecting contact between the housing of the communication device and the material;
Communication means for transmitting information according to the measurement result in the measurement means to the determination device by wireless communication,
The determination device includes:
Receiving means for receiving information according to the measurement result transmitted by the communication means;
And a determination unit that determines that the material is filled in the space when the information received by the reception unit satisfies a specific condition. A housing,
Measuring means for measuring a physical quantity for detecting contact between the casing and the flowing material;
Communication means for transmitting information corresponding to the measurement result in the measurement means to another device by wireless communication,
A communication apparatus, wherein the communication apparatus is installed at a specific position in a space formed by a mold used for curing the flowing material.

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