JP2008014740A - Instrument calibration management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an instrument calibration management system capable of reexamining a calibration time limit properly in order to secure reliability of an instrument graduation. <P>SOLUTION: In this instrument calibration management system 1 for managing the calibration time limit of an instrument M having a computer-readable ID, the ID is stored in an RFID tag T, and a characteristic ID is read by an RFID tag reader 5 installed on a using place 11 where the instrument M is used, and a using frequency is calculated. Furthermore, working environment information of the using place 11 is calculated and set, and the calibration time limit of the instrument M is reexamined based on the using frequency and the working environment information. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an instrument calibration management system.

  In power plants and the like, quality control records for piping and the like are required at each stage of manufacturing, construction, and periodic inspection, so calibration management is important to ensure the reliability of the scales used for inspection. Calibration of the scale of the instrument (hereinafter referred to as calibration) may be performed periodically by the predetermined calibration deadline, but depending on the working environment and usage frequency of the instrument, the reliability of the scale is within the calibration deadline. It is necessary to calibrate to ensure

  Therefore, when the instrument is taken out of the storage location, the person in charge of the instrument accurately records the inspector who takes out the instrument and the information on the instrument that is taken out, and always keeps track of the calibration deadline of the instrument that is taken out. In order to ensure that calibration is performed within the calibration deadline.

  However, since the management method described above is human management, if the number of instruments to be managed increases, the burden on the person in charge of the instrument increases, and there is a possibility that the calibration deadline may be missed. Therefore, a technique for automating the management of the instrument and managing the calibration deadline more reliably has been proposed.

  For example, a system has been disclosed in which management information is written in a tag attached to a meter with a reader / writer provided in a storage location, and a server connected to the network manages the calibration deadline of the meter (for example, Patent Document 1). reference). In addition, a technique for managing rental and return of an instrument by adjusting the arrangement of an antenna of a reader / writer and detecting a passing direction of a tag attached to the instrument is disclosed (for example, see Patent Document 2). .

According to the techniques disclosed in Patent Literature 1 and Patent Literature 2, it is possible to reliably manage the calibration deadline of the taken out instrument.
JP 2005-298100 A (paragraphs 0012 to 0018, FIGS. 3 to 8) JP2003-146413 (paragraphs 0010 to 0012, FIG. 1)

  However, even if the instrument is within the calibration deadline, it is necessary to calibrate promptly if there is any doubt about the reliability of the scale, and the management method using the techniques disclosed in Patent Literature 1 and Patent Literature 2 There is room for improvement.

  Accordingly, an object of the present invention is to provide an instrument calibration management system that can appropriately review the calibration deadline.

  In order to solve the above-mentioned problem, the present invention reads an instrument with an ID, reads it at the place of use, and reviews the calibration deadline of the instrument based on the usage frequency including the number of times used and the usage time, which are counted from the read ID. It was an instrument calibration management system.

  ADVANTAGE OF THE INVENTION According to this invention, the instrument calibration management system which can review a calibration deadline appropriately can be provided.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings as appropriate. Note that the data structure, data items, data values, specific numerical values, and the like described in the following description do not limit the scope of the invention.

  In addition, the instrument has a scale such as a manometer or a pressure gauge, for example, and is intended for an instrument that reads a measurement value using the scale at the time of measurement. Such an instrument needs to calibrate a scale regularly (for example, every year) in order to ensure the reliability of a scale. Therefore, the period when the previous calibration is valid is set as the calibration period, and management is performed so that the calibration is performed again before the calibration period.

<< First Embodiment >>
FIG. 1 is a diagram showing an instrument calibration management system according to the first embodiment. As shown in FIG. 1, the meter calibration management system 1 according to the first embodiment is divided into a plurality of areas, such as a power plant, for example. It is used for facilities that are checked. One of a plurality of areas (three are shown in FIG. 1) is a storage place 10 for the meter M, and the other area is a use place 11 for an inspection object having equipment to be inspected by the instrument M. FIG. 1 illustrates two use places 11a and use places 11b. Although two use places 11 are shown in FIG. 1, the number of use places 11 is not limited to two.

  In addition, the storage place 10 and each use place 11 are connected to the RFID tag reader (reader) 5 for reading information of an RFID (Radio Frequency Identification) tag T included in the meter M and the RFID tag reader 5 for controlling the RFID tag reader 5. A tag reader control device 4 is installed.

  Further, the RFID tag reader control device 4 in the storage place 10 and each use place 11 is connected to an instrument calibration time limit setting device (management device) 12. That is, a plurality of RFID tag reader control devices 4 are connected to the instrument calibration time limit setting device 12, and the RFID tag reader 5 is connected to each RFID tag reader control device 4 to constitute the instrument calibration management system 1.

  In the first embodiment, each use place 11 has an entrance and an exit, and the RFID tag reader control device 4 and the RFID tag reader 5 are arranged only at the entrance. And all the instruments M carried in to each use place 11 in order to test | inspect the installation of each use place 11 have RFID tag T. FIG. With such a structure, the RFID tag reader 5 can read the information of the RFID tag T only when the meter M is carried into the use place 11 through the entrance.

  The RFID tag T has a nonvolatile memory for reading data only (hereinafter referred to as ROM (Read Only Memory) type memory). The information in the ROM type memory can be read by the RFID tag reader 5 in a non-contact manner. Further, since the information can be transmitted if the RFID tag T is disposed or passed within the communication range of the RFID tag reader 5, the information can be easily transmitted.

  In the first embodiment, a unique ID (computer-readable ID) is stored in advance in the ROM type memory of the RFID tag T. The unique ID is, for example, a code composed of numbers “0 to 9” and alphabets “A to Z”, and a unique ID that is different for each RFID tag T is added and stored in the ROM type memory. Then, the RFID tag T responds when it receives a radio wave from the RFID tag reader 5, and the control circuit reads the unique ID stored in the ROM type memory, and the radio wave transmitter / receiver reads the read unique ID into the RFID. It transmits to the tag reader 5.

  The RFID tag reader 5 includes a transmission / reception circuit, and transmits a radio wave that activates the RFID tag T according to an instruction from the RFID tag reader control device 4 and receives a radio wave transmitted from the RFID tag T. Each RFID tag reader 5 is connected to an antenna 5a for communicating with the RFID tag T.

  The RFID tag reader control device 4 includes a control unit configured by a communication interface with the instrument calibration time limit setting device 12 and a CPU (Central Processing Unit). The control unit controls the transmission / reception operation of the RFID tag reader 5 and Data input / output to / from the RFID tag reader control device 4 is controlled via the communication interface. Note that the RFID tag reader control device 4 can control a plurality of RFID tag readers 5.

  In the first embodiment, an RFID tag reader 5 that reads the unique ID of the RFID tag T of the meter M to be loaded is installed at each use place 11, and the RFID tag reader 5 is controlled by the RFID tag reader control device 4.

  The instrument calibration deadline setting device 12 is a computer such as a workstation or a personal computer, and is connected to a terminal device (not shown) that is used by an inspector or manager for instrument management. The terminal device includes at least an input device such as a keyboard and a mouse, and a display device such as an LCD (Liquid Crystal Display) monitor. Further, the terminal device includes a computer-readable storage medium reading device such as a CD-ROM (Compact Disc Read Only Memory) drive as an input device as necessary.

  In the first embodiment, the method of connecting terminal devices (not shown) of the instrument calibration time limit setting device 12, the RFID tag reader control device 4, the RFID tag reader 5, and the meter calibration time limit setting device 12 is not particularly limited. It is conceivable to connect through the network.

  The instrument calibration time limit setting device 12 stores instrument attribute information 12a and influence information 12b as a database. The instrument calibration deadline setting device 12 has a function of revising the calibration deadline of the instrument M based on the instrument attribute information 12a and the influence degree information 12b. Further, the instrument calibration time limit setting device 12 includes a usage history totaling unit 12c and a usage frequency calculating unit 12d. The usage history totaling unit 12 c totals the usage history in each usage place 11 of the meter M. Further, the usage frequency calculation unit 12d calculates the usage frequency of the meter M based on the usage history totaled by the usage history totaling unit 12c.

  FIG. 2 shows an example of the data structure of the instrument attribute information 12a (see FIG. 1 as appropriate). The instrument attribute information 12a includes a unique ID 120, a management number 121, an instrument name 122, and a calibration deadline 123 of the RFID tag T included in the instrument M. The management number 121 is a unique number or code assigned to each meter M in order to manage the meter M, and may be set in an arbitrary form.

  Furthermore, when the meter M is carried into the place of use 11 (see FIG. 1), the RFID tag T of the meter M is detected by the RFID tag reader 5 installed at the place of use 11, and the unique ID of the RFID tag T is assigned. Read. Then, when it is transmitted to the instrument calibration deadline setting device 12 via the RFID tag reader control device 4, a usage status 124 is added. The usage status 124 includes items of a location 124a and a date / time 124b. The name of the usage location 11 where the RFID tag T is detected is registered in the location 124a, and the RFID tag T is registered in the usage date 11 at the date / time 124b. The date and time (year / month / day, hour: minute: second) detected by the RFID tag reader 5 installed in is registered. The usage status 124 is added each time the meter M is carried into the usage location 11, and a single instrument M has a data structure having a plurality of usage statuses 124.

  FIG. 3 shows an example of the data structure of the impact information. The influence degree information 12b is information obtained by evaluating the influence degree that the use place 11 where the instrument M is used has on the calibration deadline of the instrument M. In FIG. 3, the temperature 131, the humidity 132, the dust 133, the space 134, and the measurement object 135 are selected as the elements (hereinafter referred to as load elements) in which the use place 11 where the instrument M is used affects the instrument M. This is an example.

  In addition, what is necessary is just to select the element which applies the physical burden and the chemical burden which deform | transform the scale of the meter M, or to corrode as a load element to the meter M to be used. It is not limited to the elements.

  The data structure of the influence degree information 12b is composed of the use place name 130 of the use place 11 where the meter M is used and the load element described above. In FIG. 3, the elements of temperature 131, humidity 132, dust 133, space 134, and measurement object 135 are quantified based on predetermined rules as load elements.

  In the first embodiment, a rule that a large load is applied to the meter M and a large numerical value is assigned to an element that greatly affects the reliability of the scale of the meter M is adopted. The load element information quantified based on this rule is hereinafter referred to as an environmental information index.

  In the example shown in FIG. 3, the environmental information index of each item has 11 levels “0 to 10”. For example, when the place of use A (11a) (see FIG. 1) is a very hot and humid space, when the instrument M is brought into the place of use A (11a), the scale of the instrument M is thermally expanded due to the influence of the high temperature. And the load on the meter M is large, such as condensation due to the influence of high humidity. Therefore, it is evaluated that it greatly affects the reliability of the scale of the meter M, and the environmental information index of the temperature 131 and the humidity 132 is assigned the highest value “10”. In addition, since the space is very narrow, the environment information index of the highest value “10” is also applied to the space 134. In addition, the narrow space has a high risk of deformation due to an accident in which the instrument M hits the wall or is unstable and dropped, so the burden on the instrument M is large, and the reliability of the scale of the instrument M is greatly affected. It becomes an element that affects.

  In addition, the temperature and humidity of the place of use B (11b) (see FIG. 1) are controlled to a constant value close to the general environment, so the fluctuation is very small, but when there is a lot of dust in the air, the temperature and humidity are The burden on M is small. Therefore, it is evaluated that the influence on the reliability of the scale of the meter M is very small, and the environmental information index of the temperature 131 and the humidity 132 is assigned the lowest value “0”. Moreover, since the phenomenon that the scale of the meter M is contaminated by dust in the air is likely to occur, the burden on the meter M is large. Therefore, it is evaluated that the influence on the reliability of the scale of the meter M is large, and the environmental information index of the dust 133 is “8”.

  In addition, the item of the measurement object has a large impact on the reliability of the scale of the instrument M, such as measurement of radiation and ultraviolet rays, mass measurement of very large objects, measurement of very high pressure, etc. A large environmental information index is attached to measurements that are judged to be affected.

  FIG. 4 is a diagram illustrating a flow in which usage status data is updated. A procedure for updating the usage status 124 of the instrument attribute information 12a will be described with reference to FIG. 1, FIG. 2, and FIG.

  When the meter M used for the inspection is carried into the use place 11 to be inspected, the RFID tag reader 5 installed at the use place 11 detects the RFID tag T of the carried instrument M and detects the RFID tag T. Is transmitted to the RFID tag reader control device 4 (S1).

  The RFID tag reader control device 4 adds the name of the use place 11 where the instrument M is carried in and the date and time when the instrument M is carried into the received unique ID of the RFID tag T, and uses the instrument calibration deadline setting device 12 as use place carry-in information. (S2).

  At this time, the RFID tag reader control device 4 inquires about the calibration deadline of the instrument attribute information 12a of the meter calibration deadline setting device 12 (S3), and the remaining period until the calibration deadline of the loaded instrument M is longer than a predetermined period. If it is shorter, it is determined that the calibration deadline is approaching (S4 → Yes), and a request for return is made to the person in charge of the inspection (S5). As a method for requesting the return, for example, a method using an indicator or a buzzer controlled by the RFID tag reader control device 4 can be considered.

  When the calibration deadline is not approaching (S4 → No), the instrument calibration deadline setting device 12 that has received the use place carry-in information from the RFID tag reader control device 4 refers to the unique ID of the RFID tag T in the use place carry-in information and uses it. The meter attribute information 12a of the meter M to which the data of the situation 124 is added is extracted. Then, the instrument calibration deadline setting device 12 adds the data on the usage status 124 to the instrument attribute information 12a of the meter M to which the usage status 124 is added (S6). Further, the name of the use place 11 is registered in the place 124a of the use status 124, and the date and time when it is carried in is registered in the date and time 124b.

  With the above procedure, the instrument attribute information 12a of the instrument M carried into the use place 11 is updated.

  Then, the instrument calibration deadline setting device 12 reviews the calibration deadline of the instrument M based on the instrument attribute information 12a and the influence information 12b. FIG. 5 shows a flow for reviewing the calibration deadline of the meter M. The procedure for reviewing the calibration deadline will be described below with reference to FIG. 1, FIG. 2, FIG. 3, and FIG.

  When the instrument calibration deadline setting device 12 starts reviewing the calibration deadline in accordance with an instruction from the later-described instrument calibration management logic, the meter calibration deadline setting device 12 refers to the instrument attribute information 12a and revises the calibration deadline. The usage status data 124 is extracted (S11). For example, the calibration deadline is reviewed by sequentially selecting the instruments M managed by the instrument calibration management system 1 and reviewing the calibration deadlines for all the instruments M.

  The extracted data of the usage status 124 includes the names of all the usage locations 11 using the meter M, and the date and time of delivery to each usage location 11. Then, the usage history totaling unit 12c provided in the instrument calibration time limit setting device 12 totals the usage history at each usage location 11 based on the data of the usage status 124 (S12).

  That is, the instrument calibration deadline setting device 12 refers to the item of the place 124a in the use situation 124 registered in the instrument attribute information 12a, and determines the number of use situations 124 in which the name of the same use place 11 is registered. This value is used as the use history as the number of uses at the use place 11.

  Next, the instrument calibration deadline setting device 12 inquires the influence degree information 12b and calculates the work environment information of each use place 11 based on the environment information index of each use place 11 (S13). The work environment information is calculated, for example, by adding each environment information index of the use place 11. Taking the location of use A (11a) as an example, as illustrated in FIG. 3, each environmental information index includes a temperature 131 of “10”, a humidity 132 of “10”, a dust 133 of “1”, and a space 134. Since “10” and the measurement object 135 are “3”, the work environment information of the usage place A (11a) is 10 + 10 + 1 + 10 + 3 = 34.

  The instrument calibration deadline setting device 12 multiplies the calculated work environment information and the usage history to calculate the load index at the usage location 11. For example, when it is carried into the use place A (11a) once, the load index at the use place A (11a) is 34 × 1 = 34.

  And the usage frequency calculation part 12d with which the instrument calibration deadline setting apparatus 12 is equipped adds the load index calculated as mentioned above about all the usage places 11, and calculates the usage frequency of the meter M (S14).

Equation 1 for calculating the usage frequency is shown below.

  Formula 1 is a formula for calculating the usage frequency U when the instrument attribute information 2a has j usage locations 11, and the load index (working environment information Ei × usage history Hi) at each usage location 11 is all calculated. It shows that the usage place 11 is added.

  When the usage frequency is greater than the predetermined threshold (S15 → Yes), the instrument calibration deadline setting device 12 reviews the calibration deadline for the instrument M (S16) and sets the value of the calibration deadline 123 of the instrument attribute information 12a. Update.

  The calibration deadline may be set so that, for example, when a predetermined threshold is set and the usage frequency is larger than the set threshold, the calibration deadline is shortened by a predetermined period and the calibration deadline is reviewed. When “1000” is set to “1000”, it is shortened by one day every time the usage frequency exceeds “1000”). For the meter M whose calibration deadline has been reset, the usage status 124 data of the meter attribute information 12a is cleared (S17).

  As described above, by clearing the data on the usage status 124 of the instrument attribute information 12a, the data on the usage status 124 that has been referred to once is no longer referred to when the calibration deadline is newly reviewed.

  The instrument calibration time limit setting device 12 has a function of notifying or displaying to the meter administrator, for example, by a display device provided in a terminal (not shown) connected to the meter calibration time limit setting device 12 when the calibration time limit is reviewed. Is preferred. In this case, a display device provided in a terminal (not shown) serves as the output unit. By such notification or display, the meter manager can know the meter M whose calibration deadline has been reviewed.

  If the usage frequency is smaller than the predetermined threshold (S15 → No), the calibration deadline is not reviewed.

  Furthermore, when the remaining period until the calibration deadline is shorter than the predetermined period, the instrument calibration deadline setting device 12 determines that the calibration deadline is approaching (S18 → Yes), and is connected to the instrument calibration deadline setting device 12, for example. The meter manager is notified by a display device provided in a terminal (not shown) (S19). If the remaining period until the calibration deadline is longer than the predetermined period (S18 → No), the process is terminated as it is.

  As the predetermined period, for example, a period such as one month until the calibration deadline is set, and if the remaining period until the calibration deadline is shorter than the set period, it may be determined that the calibration deadline is approaching. .

  The instrument calibration deadline setting device 12 reviews the calibration deadline of the instrument M by the procedure as described above.

  FIG. 6 is a diagram showing a flow of meter calibration management. In the meter calibration management system 1 configured as described above, meter calibration management can be performed according to the flow shown in FIG. 6 periodically or by an instruction input from the meter manager. The flow of meter calibration management will be described with reference to FIGS.

  When the instrument calibration deadline setting device 12 receives an instruction to execute the instrument calibration management, the RFID tag reader 5 installed in the storage location 10 confirms the RFID tag T of the meter M stored in the storage location 10 (S21). ). Here, to confirm the RFID tag T is to confirm the existence of the RFID tag T depending on whether or not the RFID tag reader 5 installed in the storage location 10 can read the information of the RFID tag T. .

  That is, the meter M attached with the RFID tag T from which the RFID tag reader 5 was able to read information is judged to be stored in the storage location 10 and attached with the RFID tag T from which information cannot be read. It is determined that the existing meter M is not stored in the storage location 10.

  The instruction for executing the instrument calibration management is, for example, activation of a logic that is periodically incorporated in a program for operating the instrument calibration deadline setting device 12, and operation of a terminal (not shown) of the instrument administrator. by.

  The meter calibration deadline setting device 12 reviews the calibration deadline according to the flow shown in FIG. 5 for the meter M determined to be stored in the storage location 10 (S22 → Yes) (S23).

  Further, regarding the meter M determined not to be stored in the storage location 10 (S22 → No), the RFID tag reader 5 installed in each use location 11 is used to determine whether the meter M used in each use location 11 is the same. The RFID tag T that is held is confirmed. When the RFID tag T is confirmed at each use place 11, the existence of the RFID tag T is confirmed depending on whether or not the RFID tag reader 5 installed at each use place 11 can read the information of the RFID tag T. It is to be.

  That is, the measuring instrument M attached with the RFID tag T from which the RFID tag reader 5 can read information is determined to be used at the use place 11 from which the information on the RFID tag T can be read.

  Regarding the meter M determined to be used at each use place 11 (S25 → Yes), the meter calibration deadline setting device 12 reviews the calibration deadline according to the flow shown in FIG. 5 (S23). When there is an instrument M that is close to the calibration deadline, the manager in charge may request the inspector using the corresponding instrument M to return the instrument M early.

  Regarding the meter M for which the RFID tag T could not be confirmed in all the use places 11 (S25 → No), the lending record is inquired (S26), and if it is actually lent (S27 → Yes), the instrument calibration deadline The setting device 12 reviews the calibration deadline according to the flow shown in FIG. 5 (S23). When there is an instrument M that is approaching the calibration deadline, the person in charge of the management may take measures such as requesting the person in charge of the inspection using the instrument M to return the instrument M.

  Note that whether or not the meter M is being lent is determined, for example, by referring to a separately created loan record. The lending record indicates that when the inspector takes the measuring instrument M used for the inspection from the storage location, for example, inspector information (name or ID number, etc.), lending instrument information (unique ID, management number, etc.), lending date Then, items such as scheduled return date and time are registered and created, and stored in the instrument calibration deadline setting device 12. And when returning the meter M, a return date is registered.

  By creating and managing such a lending record, the meter calibration deadline setting device 12 can inquire about the lending record using the lending meter information of the meter M for determining whether or not lending is in progress as a key. If the loan date of the corresponding loan record is set and the return date is blank, it can be determined that the corresponding meter M is being loaned.

  Then, regarding the meter M for which the RFID tag T could not be confirmed and the meter M not being lent out, it is determined that the RFID tag has failed (S27 → No), and is connected to the meter calibration time limit setting device 12, for example. A failure of the RFID tag is notified to the meter manager by a display device provided in a terminal (not shown) (S28).

  The meter M stored in the storage location and having sufficient margin until the calibration deadline is stored in the storage location as a rentable meter M.

As described above, according to the first embodiment of the present invention, the meter M stored at the storage location or the meter M used for the inspection at the use location 11 periodically or according to the instruction of the meter manager. You can review the calibration deadline. And since the calibration deadline can be reset according to the usage condition of the meter M, the calibration deadline of the meter M can be managed appropriately. In the present embodiment, the RFID tag T is used, but not limited to the RFID tag T, for example, a two-dimensional code and a two-dimensional code reader may be used.
In the first embodiment, the RFID tag reader 5 that reads the information of the RFID tag T included in the meter M is assumed to be installed at the place of use 11. However, an inspection person who uses the meter M is a handy reader. Such an RFID tag reader 5 may be carried. In this case, every time the inspector carries the meter M into the use place 11, the RFID tag reader 5 reads the information of the RFID tag T included in the meter M, and transmits it to the RFID tag reader control device 4 by radio, for example. The RFID tag reader control device 4 transmits to the instrument calibration time limit setting device 12. In this case, the information on the use place 11 can be obtained by reading an RFID tag in which the use place 11 information is written, which is installed in the use place 11 in advance.

<< Second Embodiment >>
FIG. 7 is a diagram showing an instrument calibration management system according to the second embodiment (see FIGS. 2 and 3 as appropriate). As shown in FIG. 7, in the second embodiment, an RFID tag reader (reader) 5 b that reads information on the RFID tag T included in the meter M carried into the use place 21 is installed at the entrance of the use place 21. In addition, an RFID tag reader (reader) 5 c that reads information on the RFID tag T of the meter M carried out from the use place 21 is installed at the exit of the use place 21. The RFID tag reader 5b installed at the entrance and the RFID tag reader 5c installed at the exit are controlled by the same RFID tag reader control device 4.

  As shown in FIG. 7, in the same manner as in the first embodiment, there are a plurality of other configurations in the instrument calibration time limit setting device (management device) 12 that stores the instrument attribute information 12a and the influence degree 12b as a database. The RFID tag reader control device 4 is connected. The instrument calibration deadline setting device 12 has a function of revising the calibration deadline of the instrument M based on the instrument attribute information 12a and the influence degree information 12b.

  Also in the second embodiment, as in the first embodiment, the terminal device (not shown) of the instrument calibration deadline setting device 12, the RFID tag reader control device 4, the RFID tag readers 5, 5b and 5c, and the meter calibration deadline setting device 12 However, it goes without saying that the system configuration may be connected via a network.

  Furthermore, also in the second embodiment, the unique ID (computer-readable ID) is stored in advance in the ROM type memory built in the RFID tag T.

  FIG. 8 shows an example of the data configuration of the instrument attribute information 12a in the second embodiment. The instrument attribute information 12a according to the second embodiment includes a unique ID 120, a management number 121, an instrument name 122, and a calibration deadline 123 of the RFID tag T included in the instrument M, as in the first embodiment.

  Furthermore, when the meter M is carried into the use place 21 (see FIG. 7), the RFID tag T included in the meter M is detected by the RFID tag reader 5b installed at the entrance of the use place 21, and the RFID tag T is unique. The ID is read. Then, when it is transmitted to the instrument calibration deadline setting device 12 via the RFID tag reader control device 4, a usage status 124 is added. The use status 124 includes items of a place 124a, a carry-in date / time 124c, and a carry-out date / time 124d. The name of the use place 21 where the RFID tag T is detected is registered in the place 124a. The date and time (year / month / day, hour: minute: second) when T is detected by the RFID tag reader 5b installed at the entrance of the use place 21 is registered.

  Further, when the meter M is carried out from the use place 21, the RFID tag T included in the meter M is detected by the RFID tag reader 5c installed at the exit of the use place 21, and the unique ID of the RFID tag T is read. Then, when it is transmitted to the instrument calibration deadline setting device 12 via the RFID tag reader control device 4, the RFID tag reader 5 c installed at the exit of the use place 21 is added to the item of the carry-out date / time 124 d of the usage status 124. The detected date (year / month / day, hour: minute: second) is registered. Here, in the instrument attribute information exemplified in FIG. 8, in the information of the instrument name “pressure gauge”, the place 124 a of the usage status 124 and the carry-out date 124 d of the usage place A are blank. This indicates that the pressure gauge is not carried out of the use place A.

  The usage status 124 is added each time the meter M is carried into the usage location 21, and a single instrument M has a data structure having a plurality of usage statuses 124.

  FIG. 9 is a diagram illustrating a flow in which usage status data is updated. A procedure for updating the usage status 124 of the instrument attribute information 12a will be described with reference to FIGS. 7, 8, and 9. FIG.

  When the meter M used for the inspection is carried into the use place 21 to be inspected, the RFID tag reader 5b installed at the entrance of the use place 21 detects the RFID tag T included in the loaded instrument M and detects the RFID tag T. The unique ID of the tag T is read and transmitted to the RFID tag reader control device 4 (S31).

  Then, the RFID tag reader control device 4 adds the name of the use place 21 where the instrument M is carried in and the date and time when the instrument M is carried into the received unique ID of the RFID tag T, and sets the instrument calibration deadline as use place carry-in information. From the process of transmitting to the apparatus 12 (S32 in FIG. 9) to the process of adding the usage status 124 to the instrument attribute information 12a (S36 in FIG. 9) from the instrument calibration deadline setting apparatus 12 to S2 of the first embodiment. Since it is equivalent to S6 (see FIG. 4), the description is omitted.

  In the second embodiment, when the instrument M is unloaded from the use place 21 after the inspection at the use place 21 is completed, the RFID tag reader 5c installed at the exit of the use place 21 causes the RFID tag of the meter M to be unloaded. T is detected, the unique ID of the RFID tag T is read, and transmitted to the RFID tag reader controller 4 (S37).

  The RFID tag reader control device 4 adds the name of the use place 21 where the meter M is carried out and the date and time when it is carried out to the unique ID of the received RFID tag T, and uses the instrument calibration deadline setting device 12 as use place carry-out information. (S38).

  The instrument calibration deadline setting device 12 that has received the use place carry-out information from the RFID tag reader control device 4 refers to the unique ID of the RFID tag T in the use place carry-out information, and is a target for updating the data of the use situation 124 M instrument attribute information 12a is extracted.

  The instrument calibration time limit setting device 12 registers the unloading date and time (year / month / day, hour: minute: second) in the unloading date and time 124d of the usage status 124 of the meter attribute information 12a of the extracted meter M (S39).

  When the instrument M is carried into the use place 21 to be inspected according to the above procedure, the usage status 124 data is additionally updated in the instrument attribute information 12a, and when the instrument M is carried out from the use place 21, The carry-out date / time 124d is registered in the situation 124.

  The instrument calibration deadline setting device 12 reviews the calibration deadline of the instrument M based on the instrument attribute information 12a and the influence information 12b. The calibration deadline resetting procedure itself is the same as that of the first embodiment, and follows the flow shown in FIG. Note that the data structure of the influence information 12b in the second embodiment is the same as that of the influence information 12b (see FIG. 3) used in the first embodiment, and thus description thereof is omitted.

  In the second embodiment, the usage history calculation method shown in S12 of FIG. 5 is different from that of the first embodiment.

  That is, in the second embodiment, as shown in FIG. 8, the names of all the usage locations 21 that use the instrument M in the usage status 124 of the instrument attribute information 12 a, the delivery date / time 124 c to each usage location 21, and the delivery Since the date and time 124d is registered, the instrument calibration deadline setting device 12 calculates one use time at the use location 21 from the carry-in date and time at the use location 21 where the meter M is used. To do. Then, the value obtained by adding the total number of times the meter M has been carried into the use place 21 is used as the use history of the use place 21, and the work environment information and the use history of the use place 21 are multiplied to determine the use. The load index at location 21 is used.

  Taking the data record of the manometer illustrated in FIG. 8 as an example, it was carried into use place A (21a) (see FIG. 7) at 10:14:24 on March 1, 2006, and 17:44 on the same day. It has been carried out in 16 seconds. That is, the user stayed at the use place A (21a) for about 7 hours and 30 minutes. Therefore, the load index at the usage location A (21a) of the manometer is, for example, 34 (see FIG. 4) which is the work environment information of the usage location A (21a) and the staying time (7 hours 30 minutes are converted to 7.5 hours). In other words, 34 × 7.5 = 255 may be calculated.

  Here, as shown in the usage state 124 related to the location A of the pressure gauge in FIG. 8, when the instrument M is not carried out from the usage location 11, the carry-out date / time column is blank. Until the date and time for reviewing the calibration deadline, the staying time at the place of use 11 may be used (see FIG. 7).

  Note that the above calculation method is an example, and the best configuration may be adopted for the system to be configured, such as a form in which 7 hours and 30 minutes are rounded up to calculate as 8 hours, or a form in which 450 hours are calculated.

  Thereafter, the instrument calibration deadline setting device 12 reviews the calibration deadlines of the respective instruments M in the same procedure as in the first embodiment.

  As described above, also in the second embodiment of the present invention, the meter M stored at the storage location 10 or the meter used for the inspection at the usage location 21 periodically or according to an instruction from the meter manager. The M calibration deadline can be reviewed. And since the calibration deadline can be reset according to the usage condition of the meter M, the calibration deadline of the meter M can be managed appropriately.

  Furthermore, in the second embodiment of the present invention, since the staying time of the meter M at the place of use 21 can be managed, the burden on the meter M is large, and in an environment that greatly affects the reliability of the scale of the meter M. The instrument M that has been used for a long time has the effect of being able to manage the calibration deadline in detail, such as performing early calibration.

<< Third Embodiment >>
As the third embodiment of the present invention, a form in which the work environment information of the use place 11 changes in real time is also conceivable. Hereinafter, a description will be given with reference to FIG. In the third embodiment, for example, the temperature of the place of use 11 is constantly monitored with a thermometer (detection means) (not shown) and the data is sent to the instrument calibration deadline setting device 12 via the tag reader control device 4, for example. Send regularly.

  The instrument calibration deadline setting device 12 calculates the average daily temperature of the place of use 11 based on the temperature data periodically transmitted, and calculates the average calculated as the temperature 131 of the influence degree information 12b in FIG. Register the environmental information index corresponding to the temperature. That is, in the third embodiment, the data of the influence degree information 12b is accumulated every day. Note that the environmental information index corresponding to the calculated average temperature may be set such that, for example, the environmental information index is set to 0 when the average temperature ranges from 20 ° C. to 25 ° C.

  Then, when the instrument calibration deadline setting device 12 reviews the calibration deadline of the instrument M, first, referring to the date and time 124b (see FIG. 2) of the usage status 124 of the instrument attribute information 12a, Extract the usage date.

  Then, the work environment information on the day of use is calculated with reference to the data of the influence degree information 12b corresponding to the extracted use day. The load index at one use place 11 is calculated by adding the work environment information for all days used at the use place 11.

  In the above description, the average value is calculated in units of one day. However, this is not limited, and a weekly average value, a monthly average value, or the like may be used.

  Furthermore, although the temperature is taken as an example in the above description, it is not limited to the temperature, and it goes without saying that other items such as humidity and dust can be dealt with in the same manner.

  In the third embodiment, even if the working environment of the use place 11 where the meter M is used changes, the calibration deadline of the meter M can be reset in response to the change, so the calibration deadline can be managed more finely. There is an effect.

<< Fourth Embodiment >>
As a fourth embodiment of the present invention, when the information on the person in charge of inspection (user) who uses the meter M is added to the meter attribute information 12a and the meter calibration deadline setting device 12 calculates the use frequency, A form in which the information of the inspector is reflected is also conceivable. Hereinafter, a description will be given with reference to FIG.

  That is, the person in charge of inspection possesses an ID card including an RFID tag in which personal identification information (name, employee code, etc.) is stored. When the meter M is carried into the place of use 11, the RFID tag reader 5 reads the identification information of the RFID tag of the ID card possessed by the inspector in addition to the RFID tag T of the meter M. With the above-described configuration, the instrument calibration deadline setting device 12 can identify the person in charge of inspection who uses the instrument M.

  Then, the usage history totaling unit 12c of the instrument calibration time limit setting device 12 also adds the identification information of the person in charge of the inspection when totaling the usage history.

  On the other hand, the instrument calibration deadline setting device 12 stores the influence (for example, past damage history of the instrument M) that the inspector has on the calibration deadline of the instrument M as human influence information for each inspector. (Not shown).

  Then, the usage frequency calculation unit 12d of the instrument calibration deadline setting device 12 reads the human influence information when calculating the usage frequency of the instrument M, and calculates the usage frequency by applying the read human influence degree. .

  For example, when an inspector using the meter M has a history of damaging the meter M in the past, the meter calibration deadline setting device 12 may multiply the calculated use frequency by the human influence degree (for example, the meter If the damage history is 1 time, multiply by 1.2).

  In the fourth embodiment, the calibration deadline of the meter M can be reset by reflecting the degree of human influence of the inspector who uses the meter M, so that the calibration deadline can be managed more finely.

<< Fifth Embodiment >>
As a fifth embodiment of the present invention, a form in which the RFID tag T included in the meter M incorporates an electrically rewritable nonvolatile memory (hereinafter referred to as a rewritable memory) is conceivable. In the fifth embodiment, a unique ID (computer-readable ID) is stored in advance in the rewritable memory built in the RFID tag T.

  FIG. 10 is a diagram showing an instrument calibration management system according to the fifth embodiment. As shown in FIG. 10, the instrument calibration management system 3 according to the fifth embodiment also has one storage place 30 and a plurality of (two in FIG. 10) use places 31a, as in the first embodiment. 31b. In addition, although two use places 31 are shown in FIG. 10, the number of use places 31 is not limited to two.

  In the instrument calibration management system 3 according to the fifth embodiment, an RFID tag reader / writer (means for writing data in a storage device) 50 and an RFID tag reader / writer control device 40 are installed in the storage location 30. An RFID tag reader / writer 50b is installed at the entrance of each use location 31, and an RFID tag reader / writer 50c is installed at the exit. Further, RFID tag reader / writers 50b, 50c are connected, and an RFID tag reader / writer control device 40 for controlling these RFID tag reader / writers is installed. By installing the RFID tag reader / writers 50, 50b, 50c and the RFID tag reader / writer control device 40, it becomes possible to write information in the rewritable memory of the RFID tag.

  According to the meter calibration management system 3 according to the fifth embodiment, when the meter M is taken out of the storage location 30 or when the calibration deadline is reviewed, the RFID tag T of the meter M having the calibration deadline set in the meter M is used. It becomes possible to write to the rewritable memory.

  When the calibration deadline is written in the rewritable memory of the RFID tag T of the meter M, when the meter M is carried into the use location 31, the RFID tag reader / writer 50b installed at the entrance of the use location 31 As information of the RFID tag T, the calibration deadline of the instrument M to be carried in can be read in addition to the unique ID.

  Then, the RFID tag reader / writer control device 40 connected to the RFID tag reader / writer 50 knows the calibration deadline of the meter M without referring to the meter attribute information 12a of the meter calibration deadline setting device (management device) 12. As a result, communication between the RFID tag reader / writer control device 40 and the instrument calibration deadline setting device 12 is no longer necessary, and an instrument that is approaching the calibration deadline is requested to return to the inspector in a short time at the entrance of the place of use 31. be able to.

  Further, when the meter calibration management system 3 according to the fifth embodiment is a system in which the meter calibration deadline setting device 12 and the RFID tag reader / writer control device 4 are connected via a network, the traffic on the network is reduced. There is also an effect that can be done.

It is a figure which shows the meter calibration management system which concerns on 1st Embodiment. It is a figure which shows an example of the data structure of meter attribute information. It is a figure which shows an example of the data structure of influence degree information. It is a figure which shows the flow in which the data of the usage condition of meter attribute information are updated. It is a figure which shows the flow which reviews the calibration deadline of an instrument. It is a figure which shows the flow of meter calibration management. It is a figure which shows the meter calibration management system which concerns on 2nd Embodiment. It is a figure which shows an example of the data structure of the instrument attribute information in 2nd Embodiment. The flow by which the data of the usage condition of the instrument attribute information in 2nd Embodiment are updated is shown. It is a figure which shows the meter calibration management system which concerns on 5th Embodiment.

Explanation of symbols

1,2,3 Instrument calibration management system 10,30 Storage location 11,21,31 Usage location 12 Instrument calibration time limit setting device 12a Instrument attribute information 12b Influence information 4 RFID tag reader control device 5, 5c, 5d RFID tag reader M Instrument T RFID tag

Claims (5)

A computer-readable ID is attached to a meter that has a deadline for calibration,
A reader for reading the ID is provided at each of a plurality of usage locations where the instrument is used, and / or a user reading the ID is carried by the user of the instrument, and the instrument is used at the usage location. Every time the reader reads the ID,
The reader is a meter calibration management system in which a management device connected by wire or wirelessly manages the calibration deadline of the meter based on information read by the reader.
The management device
A usage history totaling unit that collects information obtained by reading the ID by the reader and totals a usage history including a usage time or a usage count for each ID;
For each ID, a usage frequency calculation unit that calculates a usage frequency based on the usage history;
When the calculated use frequency exceeds a predetermined threshold, an output unit for notifying or displaying the review of the calibration deadline of the meter corresponding to the ID;
An instrument calibration management system characterized by comprising: The management device includes a storage unit that stores the degree of influence on the calibration deadline of the instrument for each place of use, and stores the degree of influence information.
The usage history totaling unit collects information obtained by reading the ID by the reader, and totals a usage history including a usage time or a usage count at each usage location for each ID,
The use frequency calculation unit reads the influence degree for each use place with reference to the influence degree information, and applies the read influence degree for each use place to the use history in each use place for each ID. Calculating the frequency of use,
The instrument calibration management system according to claim 1. In the use place, it has detection means for detecting a change in the degree of influence on the calibration deadline of the instrument for each use place,
The management device acquires the change in the degree of influence detected by the detection unit,
The instrument calibration management system according to claim 2, wherein the influence degree information for each use place is updated based on the acquired change in the influence degree. The reader has a function of acquiring information for identifying a user of the instrument and transmitting the information to the management device;
The management device includes a storage unit that stores human influence information obtained by evaluating the degree of human influence given to the calibration deadline of the meter for each user.
The usage history totaling unit totals the usage history taking into account information for identifying the user,
The usage frequency counting unit refers to the human influence information, reads the human influence degree for each user, and further applies the read human influence degree to calculate the usage frequency. The instrument calibration management system according to claim 2. The ID is stored in an electrically rewritable storage device attached to the meter,
The reader further includes means for writing data to the electrically rewritable storage device attached to the instrument,
The instrument calibration management system according to claim 1, wherein the reader writes a calibration deadline of the instrument reviewed in the electrically rewritable storage device attached to the instrument.

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