JP2017107591A - Portable terminal and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce workload and work time for searching a reading object with a Radio Frequency Identification (RFID) tag.SOLUTION: A portable terminal 10 acquires reading direction information of an RFID reader/writer section 18 when an RFID tag 30 is read by an azimuthal magnetic needle section 21 and stores positional information when the RFID tag 30 detected by a motion sensor 19 is read and the acquired reading direction information in a flash memory 17 in association with identification information of the RFID tag 30 as previous reading positional information and previous reading direction information. The portable terminal 10 acquires the reading direction information of the RFID reader/writer section 18 from azimuth information detected by the azimuthal magnetic needle section 21 and notifies guide information showing the previous reading positional information and the previous reading direction information stored in the flash memory 17 in relation to the positional information detected by the motion sensor 19 and the acquired reading direction information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mobile terminal and a program.

  2. Description of the Related Art Conventionally, RFID technology is known in which an RFID (Radio Frequency IDentification) reader / writer reads information from an RFID tag by radio communication via a radio wave or electromagnetic field at a short distance. RFID technology is widely used for train tickets, bus tickets, electronic money, employee ID cards, and the like.

  A technique using RFID technology for position measurement is also known. For example, using a video camera including three or more wireless communication units that communicate with a wireless tag attached to a subject, the subject is photographed, and the arrival time difference of wireless signals from the wireless tag to each wireless communication unit is used. A configuration is known in which the position of a subject is measured based on the principle of trilateral surveying (see Patent Document 1). Information about the position of the measured subject is displayed on the display unit of the video camera.

JP 2008-227877 A

  There is a demand for using RFID technology for managing articles such as warehouse equipment. Specifically, the user manages the inventory of the equipment by reading the RFID tag attached to the equipment as the reading object of the warehouse with an RFID reader / writer. Since the range in which the RFID tag can be read is a short distance, it is necessary for the user to move and specify the equipment with the RFID tag to be read. However, since a user who has little experience in equipment management does not know the approximate position of the equipment and needs to search for the equipment, there is a risk that the work load is large and the work time is long.

  In addition, the conventional configuration for performing position measurement by triangulation of a subject to which a wireless tag is attached can measure the position of the subject (wireless tag) approaching the subject when the approximate position of the subject (wireless tag) is known. However, in a state where the subject is not known, the photographer must search for the subject and approach it. For this reason, even if the conventional triangulation position positioning technique using a wireless tag is applied to equipment management, there is a risk that the work burden on the user is large and the work time is also long.

  An object of the present invention is to appropriately perform guidance or processing for a previously stored position with reference to the current position.

The first aspect of the present invention is a portable terminal provided with an acquisition unit that acquires a current position, and stores the position information of the current position acquired by the acquisition unit at a plurality of arbitrary positions in association with identification information, respectively. A plurality of storage control means for storing, a selection means for selecting arbitrary identification information among the plurality of identification information stored in the storage means, and a position stored in association with the identification information selected by the selection means Guidance output means for reading out information from the storage means and outputting guidance based on the current position of the portable terminal.
A third aspect of the present invention provides a portable terminal including an acquisition unit that acquires a current position, and when performing information acquisition processing at a specific position, reads position information stored in a storage unit in association with the specific position, If the position determined by the position information is determined to be in the vicinity of the current position acquired by the acquisition means and the position determined by the determination means is the vicinity position, And a process control means for executing an acquisition process.
Claim 8 is a portable terminal provided with an acquisition means for acquiring the current position, the detection means for detecting the forward direction that the portable terminal is facing, and the position stored in the storage means in association with the specific position First determining means for reading information and determining whether the position information is in the forward direction of the portable terminal detected by the detecting means with reference to the current position of the portable terminal acquired by the acquiring means And a second discriminating unit that discriminates whether or not the specific position based on the location information is in the vicinity of the current position when the first discriminating unit discriminates that the vehicle is in the forward direction. Features.

  According to the present invention, it is possible to appropriately perform guidance or processing for a previously stored position with reference to the current position.

It is a block diagram which shows the function structure of the portable terminal of embodiment of this invention. It is a figure which shows the structure of a reading information table. It is a flowchart which shows a 1st information reading process. (A) is a figure which shows the mode of the imaging before RFID tag reading. (B) is a figure which shows the preview image containing the mark of the last reading position and the last reading direction. It is a figure which shows the mode of reading of the guided RFID tag. It is a figure which shows the preview image containing the mark of the instruction | indication which rotates an imaging direction to the left. It is a figure which shows the preview image containing the mark of the instruction | indication which approaches the reading position last time. It is a flowchart which shows a 2nd information reading process. It is a flowchart which shows a 3rd information reading process. It is a block diagram which shows the function structure of the portable terminal of a 3rd modification.

  Hereinafter, embodiments and first to third modifications according to the present invention will be described in detail in order with reference to the accompanying drawings. The present invention is not limited to the illustrated example.

(Embodiment)
Embodiments according to the present invention will be described with reference to FIGS. First, the apparatus configuration of the present embodiment will be described with reference to FIG. FIG. 1 shows a functional configuration of the mobile terminal 10 of the present embodiment.

  The mobile terminal 10 according to the present embodiment is a handy terminal that reads information stored in an RFID tag 30 attached to an article as a reading object, and displays guidance for a position and a reading direction for the reading. It is.

  In the present embodiment, an example will be described in which the mobile terminal 10 is used for management of equipment in a warehouse every predetermined period (for example, 6 months). This is an example in which the user uses the mobile terminal 10 to read information stored in the RFID tag 30 attached to the equipment in the warehouse and inventory the equipment. However, it is not limited to this example.

  The RFID tag 30 is a radio wave type or electromagnetic induction type RFID tag. The RFID tag 31 includes a communication unit including an antenna or a coil antenna, a control unit, and an EEPROM (Electrically Erasable Programmable Read Only Memory). In the RFID tag 30, the control unit wirelessly communicates with the mobile terminal 10 via the radio wave or electromagnetic field by the communication unit, reads out data stored in the EEPROM in response to a read request received from the mobile terminal 10, and Transmit to the terminal 10. The control unit of the RFID tag 30 writes or rewrites data received from the mobile terminal 10 in the EEPROM.

  It is assumed that individual identification information of the RFID tag 30 is stored in the EEPROM of the RFID tag 30. In addition, the RFID tag 30 is a passive RFID tag (passive tag) that obtains power by radio waves or electromagnetic fields from the mobile terminal 10. However, the RFID tag 30 may include an active RFID tag (active tag) that includes a power supply unit and outputs a radio wave or an electromagnetic field by the power of the power supply unit.

  The mobile terminal 10 includes a CPU (Central Processing Unit) 11 as a storage control unit and a notification control unit, an operation unit 12, a RAM (Random Access Memory) 13, a display unit 14 as a notification unit, a ROM 15, and a wireless A communication unit 16, a flash memory 17 as a storage unit, an RFID reader / writer unit 18 as a reading unit, a motion sensor 19 as a position information detection unit, an imaging unit 20, and an azimuth magnetic needle unit as an azimuth information detection unit 21 and a power supply unit 22. Each part of the mobile terminal 10 excluding the power supply part 22 is connected to each other via a bus 23.

  The CPU 11 controls each unit of the mobile terminal 10. The CPU 11 reads a designated program out of various programs from the ROM 15 and expands it in the RAM 13 and executes various processes in cooperation with the expanded program.

  In accordance with the first information reading program 151, the CPU 11 acquires reading direction information of the RFID reader / writer unit 18 from the direction information of the mobile terminal 10 when the RFID tag 30 is read by the direction magnetic needle unit 21, and the motion sensor 19 The position information when the detected RFID tag 30 is read and the acquired reading direction information are associated with the individual identification information of the RFID tag 30 as the previous reading position information and the previous reading direction information in the flash memory 17. Remember. In addition, the CPU 11 displays a preview image (through image) captured by the imaging unit 20 on the display unit 14, and acquires reading direction information of the RFID reader / writer unit 18 from the orientation information detected by the orientation magnetic needle unit 21. The mark indicating the previous reading position information and the previous reading direction information stored in the flash memory 17 for the position information detected by the motion sensor 19 and the acquired reading direction information is displayed in the preview image and notified to the user. To do.

  The operation unit 12 includes a key group including various keys such as a character input key, and outputs operation information corresponding to a pressing input of each key from the user to the CPU 11.

  The RAM 13 is a volatile semiconductor memory and has a work area for storing various data and various programs.

  The display unit 14 includes a display panel such as an LCD (Liquid Crystal Display) or an EL (ElectroLuminescent) display, and performs various displays on the display panel according to display information input from the CPU 11.

  The ROM 15 is a read-only semiconductor memory that stores various data and various programs. The ROM 15 stores a first information reading program 151.

  The wireless communication unit 16 is a wireless communication unit using a wireless LAN communication method. The wireless communication unit 16 includes an antenna, a modulation unit, a demodulation unit, a signal processing unit, and the like, and performs wireless communication with the access point. The wireless communication unit 16 processes a signal of information to be transmitted by the signal processing unit, modulates the signal by the modulation unit, and transmits the signal from the antenna to the access point. This access point is connected to a communication destination device via a wired LAN. In addition, the wireless communication unit 16 demodulates a radio wave reception signal received from an access point by an antenna by a demodulation unit, and performs signal processing by a signal processing unit to obtain reception information. In this way, the wireless communication unit 16 communicates with a communication destination device via the access point. The wireless communication unit 16 may be configured to perform wireless communication using another communication method.

  The flash memory 17 is a non-volatile semiconductor memory that stores information in a readable and writable manner. The flash memory 17 stores a read information table 40 described later.

  The RFID reader / writer unit 18 is a radio wave type or electromagnetic induction type reader / writer unit that reads and writes information stored in the RFID tag 31. The RFID reader / writer unit 18 modulates an electric signal of transmission data input from the CPU 11 and transmits it as a radio wave or an electromagnetic field from an antenna or a coil antenna. The RFID tag 30 receives a radio wave or an electromagnetic field output from the RFID reader / writer unit 18 and transmits data to be transmitted to the RFID reader / writer unit 18 as a radio wave or an electromagnetic field. The RFID reader / writer unit 18 receives a radio wave or an electromagnetic field transmitted from the RFID tag 31 by an antenna or a coil antenna, and receives data by demodulating the obtained electric signal.

  The communication of the RFID reader / writer unit 18 has directivity. The information of the RFID tag 30 is read in the direction in which the RFID reader / writer unit 18 of the portable terminal 10 has good communication. The direction in which the RFID reader / writer unit 18 reads information from the RFID tag 30 is defined as a reading direction.

  The motion sensor 19 is a sensor that detects position information of the mobile terminal 10. The motion sensor 19 includes an acceleration sensor, a ground axis sensor, and a control unit (CPU). The acceleration sensor is a sensor that detects acceleration information of the mobile terminal 10. The earth axis sensor is an electronic compass, and is a sensor that detects azimuth information of the mobile terminal 10. The control unit calculates position information on the horizontal plane of the mobile terminal 10 using the acceleration information detected by the acceleration sensor and the orientation information detected by the earth axis sensor, and outputs the position information to the CPU 11. For this reason, the motion sensor 19 can detect position information not only outdoors but also in an indoor facility such as a warehouse.

  The imaging unit 20 is an imaging unit that captures an image of a subject. The imaging unit 20 includes an optical system, an imaging element, and the like. Under the control of the CPU 11, the imaging unit 20 photoelectrically converts the light of the subject image incident via the optical system by the imaging device, and outputs it as an image signal of the subject. The direction in which the imaging unit 20 images the subject is defined as the imaging direction.

  The azimuth magnetic needle unit 21 is a ground axis sensor that detects azimuth information of the mobile terminal 10 and outputs it to the CPU 11. The azimuth needle unit 21 may use a ground axis sensor in the motion sensor 19.

  The power supply unit 22 is a secondary battery such as a lithium battery, and supplies power to each unit of the mobile terminal 10. The power supply unit 22 may be a primary battery such as an alkaline battery.

  Next, information stored in the mobile terminal 10 will be described with reference to FIG. FIG. 2 shows the configuration of the read information table 40.

  2 is added to or rewritten in the flash memory 17 by executing a first information reading process to be described later. The reading information table 40 has fields of individual identification information 41, reading position information 42, and reading direction information 43.

  The individual identification information 41 is individual identification information for identifying the RFID tag 30. The read position information 42 is position information of the user (mobile terminal 10) when the RFID tag 30 corresponding to the individual identification information 41 is read. The reading direction information 43 is direction information of the reading direction of the RFID reader / writer unit 18 of the portable terminal 10 when the RFID tag 30 corresponding to the individual identification information 41 is read.

  Next, the operation of the mobile terminal 10 will be described with reference to FIGS. FIG. 3 is a flowchart showing the first information reading process. FIG. 4A shows a state of imaging before reading the RFID tag. FIG. 4B shows a preview image 141 including marks 81 and 82 in the previous reading position and the previous reading direction. FIG. 5 shows how the guided RFID tag 31 is read. FIG. 6 shows a preview image 142 including an instruction mark 83 for turning the imaging direction to the left. FIG. 7 shows a preview image 143 including the previous reading position and the approaching marks 84 and 85.

  The first information reading process executed by the mobile terminal 10 selects the RFID tag 30 as the reading object, displays a mark indicating the previous reading position information and the previous reading direction information, and displays information on the RFID tag 30 to the user. Is read, and the information of the guided RFID tag 30 is read. In the mobile terminal 10, for example, the CPU 11 is read from the ROM 15 and appropriately expanded in the RAM 13 when triggered by the execution instruction input of the first information reading process from the user via the operation unit 12. The first information reading process is executed in cooperation with the first information reading program 151.

  First, the CPU 11 activates the RFID reader / writer unit 18, the imaging unit 20, the motion sensor 19, and the azimuth magnetic needle unit 21 (step S11). Then, the CPU 11 refers to the read information table 40 stored in the flash memory 17 and displays all records of the individual identification information 41 or a list of equipment names corresponding to the individual identification information 41 on the display unit 14. The selection input of the individual identification information in the list or the individual identification information corresponding to the equipment name is received via the operation unit 12 (step S12).

  Then, the CPU 11 starts displaying the preview image captured by the imaging unit 20 on the display unit 14 (step S13). Then, the position information of the user (mobile terminal 10) detected by the motion sensor 19 is acquired, and the imaging direction of the imaging unit 20 and the reading direction of the RFID reader / writer unit 18 according to the orientation information detected by the orientation magnetic needle unit 21 are acquired. The imaging direction information and the reading direction information as the azimuth information are calculated and acquired (step S14).

  Then, the CPU 11 refers to the reading information table 40 stored in the flash memory 17 and acquires the reading position information 42 corresponding to the individual identification information 41 selected in step S12. Further, the CPU 11 uses the position information of the user (mobile terminal 10) acquired in step S14 as the acquired reading position information 42 within the angle of view of the preview image corresponding to the imaging direction information acquired in step S14. It is determined whether or not there is a previous reading position (step S15).

  When the previous reading position is within the angle of view of the imaging direction information (step S15; YES), the CPU 11 refers to the reading information table 40 stored in the flash memory 17 and the individual identification information 41 selected in step S12. Is obtained. Further, the CPU 11 calculates a distance between the reading position information 42 acquired in step S15 and the position information of the user (mobile terminal 10) acquired in step S14. Further, the CPU 11 displays a mark corresponding to the calculated distance and the acquired reading direction information 43 at a position corresponding to the reading position information 42 acquired in step S15 on the preview image being displayed on the display unit 14. (Step S16).

  In step S16, a mark such as a flag indicating a reading position with a size in perspective according to the distance between the acquired reading position information 42 and the position information of the user (mobile terminal 10), and the acquired reading direction information A mark such as an arrow indicating the reading direction corresponding to 43 is synthesized and displayed at a position corresponding to the reading position information 42 in the preview image.

  The CPU 11 then reads the reading direction information acquired in step S14, the distance between the reading position information 42 calculated in step S16 and the position information of the user (mobile terminal 10), and the reading direction information 43 acquired in step S16. Based on the above, it is determined whether or not the RFID reader / writer unit 18 (portable terminal 10) is within a range (distance and azimuth) in which the RFID tag 30 can be read (step S17).

  When the previous reading position is not within the angle of view in the imaging direction (step S15; NO), the CPU 11 reads the reading position information 42 acquired in step S14 outside the screen of the preview image corresponding to the imaging direction information acquired in step S14. A mark indicating the previous reading position is displayed in the preview image being displayed on the display unit 14 (step S18), and the process proceeds to step S14.

  In step S18, a mark such as an arrow indicating whether the previous reading position is on the left or right screen of the preview image is synthesized and displayed in the preview image.

  When the RFID reader / writer unit 18 (mobile terminal 10) is not within the range in which the RFID tag 30 can be read (step S17; NO), the CPU 11 reads the read position information 42 calculated in step S16 and the position of the user (mobile terminal 10). Based on the distance to the information and the reading position information 42 acquired in step S15, a mark for instructing the user to further approach the previous reading position is displayed in the preview image being displayed on the display unit 14. (Step S19), the process proceeds to Step S14.

  In step S19, a mark such as an arrow instructing to approach the direction of the previous reading position is synthesized and displayed in the preview image.

  When the RFID reader / writer unit 18 (mobile terminal 10) is within a range in which the RFID tag 30 can be read (step S17; YES), the CPU 11 outputs radio waves or electromagnetic fields from the RFID reader / writer unit 18 to the RFID tag 30. The stored information (individual identification information) is read (step S20). Then, the CPU 11 determines whether or not the reading of information by the RFID reader / writer unit 18 in step S20 is successful (step S21).

  When reading of information by the RFID reader / writer unit 18 fails (step S21; NO), the process proceeds to step S14. When the reading of information from the RFID reader / writer unit 18 is successful (step S21; YES), the CPU 11 displays that the reading of information by the RFID reader / writer unit 18 of the individual identification information selected in step S12 is completed. The information is displayed on the unit 14 and stored in the flash memory 17 (step S22).

  Then, the CPU 11 refers to the reading information table 40 stored in the flash memory 17 and reads the position information corresponding to the individual identification information 41 selected in step S12 with the position information and reading direction information acquired in step S14. 42 and reading direction information 43 are rewritten (step S22). Then, the CPU 11 ends the reading function including the radio wave or electromagnetic field output of the RFID reader / writer unit 18, ends the preview image display of the display unit 14 (step S24), and ends the first information reading process.

  Here, a specific example of the display screen in the first information reading process will be described. As illustrated in FIG. 4A, an example in which the user 50 reads and manages the RFID tag 31 attached to the desk 60 as equipment for the reading object stored in the warehouse using the mobile terminal 10 will be described. To do.

  It is assumed that the RFID tag 31 of the desk 60 has been read last time. The previous reading position of the RFID tag 31 is a previous reading position 71, and the previous reading direction of the RFID tag 31 is a previous reading direction 72. The user 50 cannot directly view the previous reading position 71 and the previous reading direction 72. Further, it is assumed that the identification information 41 of the RFID tag 31, the reading position information 42 of the previous reading position 71, and the reading direction information 43 of the previous reading direction 72 are stored in the reading information table 40.

  The first information reading process is executed by the portable terminal 10, and the individual identification information corresponding to the RFID tag 31 attached to the desk 60 is selected and input by the user 50 in step S <b> 12. Then, the user 50 directs the imaging direction 201 of the mobile terminal 10 in a direction where the previous reading position of the desk 60 is likely. As shown in FIG. 4A, when the previous reading position 71 is included in the angle of view corresponding to the imaging direction 201, the preview image 141 shown in FIG. Is displayed.

  The preview image 141 includes a flag mark 81 having a position and a size corresponding to the previous reading position 71 and an arrow mark 82 indicating the previous reading direction 72.

  The user 50 proceeds to the position of the mark 81 while visually confirming the preview image 141 displayed on the display unit 14, and directs the reading direction of the RFID reader / writer unit 18 of the mobile terminal 10 in the direction corresponding to the mark 82. . Then, in step S20, the individual identification information stored in the RFID tag 31 attached to the desk 60 is read by the RFID reader / writer unit 18 of the portable terminal 10 as shown in FIG.

  In step S12, when the individual identification information of the equipment further to the left of the desk 60 is selected and input, the imaging direction of the mobile terminal 10 faces the imaging direction 201, and the previous reading position is not in the preview image. As shown in FIG. 6, a preview image 142 is displayed on the display unit 14 in step S18. The preview image 142 includes an arrow mark 84 indicating that the previous reading position is outside the left screen of the preview image.

  In step S12, the individual identification information of the desk 60 is selected and input, and the imaging direction of the mobile terminal 10 faces the imaging direction 201, but the previous reading position is further to the back than the previous reading position 71, and so far. 7 is displayed, the preview image 143 is displayed on the display unit 14 in step S19 as shown in FIG. The preview image 143 includes a flag mark 84 smaller than the mark 81 indicating the previous reading position, and a three-dimensional wide arrow mark 85 for giving an instruction to approach the mark 84.

  As described above, according to the present embodiment, the mobile terminal 10 acquires the reading direction information of the RFID reader / writer unit 18 from the orientation information of the mobile terminal 10 when the RFID tag 30 is read by the azimuth magnetic needle unit 21, and the motion The position information when the RFID tag 30 detected by the sensor 19 is read and the obtained reading direction information are associated with the identification information of the RFID tag 30 as the previous reading position information and the previous reading direction information. 17 stored. In addition, the mobile terminal 10 displays a preview image captured by the imaging unit 20 on the display unit 14, acquires reading direction information of the RFID reader / writer unit 18 from the orientation information detected by the orientation magnetic needle unit 21, and motion A mark as first guidance information indicating the previous reading position information and the previous reading direction information stored in the flash memory 17 for the position information detected by the sensor 19 and the acquired reading direction information is displayed in the preview image. To inform the user.

  For this reason, the user can easily visually confirm the previous reading position information and the previous reading direction information of the RFID tag 30 of the reading object, and reduce the work load and work time for searching for the reading object to which the RFID tag 30 is attached. it can.

  Further, the mobile terminal 10 receives a selection input of the RFID tag 30 to be read via the operation unit 12, and previews a mark indicating the previous reading position information and the previous reading direction information of the selected RFID tag 30 to be read. Display in the image. For this reason, since the mark corresponding to the RFID tag 30 other than the reading target is not displayed in the preview image, the mark indicating the necessary previous reading position information and the previous reading direction information selected by the user can be more easily confirmed visually, It is possible to further reduce the work load and the work time for searching for a reading object to which the RFID tag 30 to be read is attached.

  Further, the mobile terminal 10 displays marks corresponding to the previous reading position information and the previous reading direction information (marks 81 and 82 in FIG. 4B) in a size corresponding to the depth of the previous reading position. For this reason, the user can easily confirm the depth of the previous reading position visually.

  In addition, the mobile terminal 10 acquires the imaging direction information of the imaging unit 20 from the acquired orientation information of the mobile terminal 10, and whether or not the previous reading position is outside the preview image using the previous reading position information and the acquired imaging direction. When the previous reading position is outside the preview image, a mark (mark 83 in FIG. 6) as second guidance information indicating the direction in which the previous reading position is present is displayed in the preview image. For this reason, the user can easily visually confirm the direction in which the previous reading position exists even if the mark indicating the previous reading position information and the previous reading direction information is not in the preview image.

  Further, the mobile terminal 10 calculates the distance between the position information of the mobile terminal 10 detected by the motion sensor 19 and the previous reading position information stored in the flash memory 17, and the calculated distance is equal to or greater than a predetermined distance. In some cases, a mark (mark 84 in FIG. 7) is displayed in the preview image as third guidance information for an instruction to approach the previous reading position. For this reason, the user can more easily confirm the depth of the previous reading position visually.

  Further, the mobile terminal 10 determines whether the position information detected by the motion sensor 19 and the acquired reading direction information are in the previous reading position information and the previous reading direction information stored in the flash memory 17 (whether they are in a readable range). ) If the position information and the reading direction information are in the previous reading position information and the previous reading direction information, the RFID reader / writer unit 18 is caused to read the RFID tag 30. For this reason, useless radio wave or electromagnetic field output from the RFID reader / writer unit 18 can be reduced, and power consumption can be reduced.

  In addition, the mobile terminal 10 detects position information of the mobile terminal 10 by the motion sensor 19. For this reason, the mark of the previous reading position information and the previous reading direction information of the RFID tag 30 attached to the object to be read indoors (or outdoors) can be displayed.

(First modification)
A first modification of the above embodiment will be described with reference to FIG. FIG. 8 shows the second information reading process.

  In the above embodiment, the user selects one of the RFID tags 30 of the plurality or one of the reading objects by executing the first information reading process, and the previous reading position of the selected one RFID tag 30 The information and the mark indicating the previous reading direction information are displayed to guide reading of the RFID tag information. In this modification, a mark indicating the previous reading position information and the previous reading direction information of the RFID tag 30 of a plurality or one of the reading objects is simultaneously displayed to guide reading of information of the RFID tag 30.

  The device configuration of this modification uses the portable terminal 10 as in the above embodiment. However, it is assumed that the ROM 15 stores a second information reading program instead of the first information reading program 151.

  With reference to FIG. 8, operation | movement of the portable terminal 10 of this modification is demonstrated. The second information reading process executed by the mobile terminal 10 displays and guides the mark indicating the previous reading position information and the previous reading direction information of the plurality or one of the RFID tags 30 to the user, This is a process of reading information. In the mobile terminal 10, for example, triggered by the input of the execution instruction of the second information reading process from the user via the operation unit 12, the CPU 11 is read from the ROM 15 and appropriately expanded in the RAM 13. The second information reading process is executed in cooperation with the second information reading program.

  Steps S31 to S33 are the same as steps S11, S13, and S14 of the first information reading process of FIG. After executing step S33, the CPU 11 refers to the reading information table 40 stored in the flash memory 17, acquires the reading position information 42 of all records, and acquires the position information of the user (mobile terminal 10) acquired in step S14. Is used to determine whether or not the previous reading position as the acquired reading position information 42 is within the angle of view of the preview image corresponding to the orientation information of the imaging direction acquired in step S14 (step S34).

  When the previous reading position is within the angle of view in the imaging direction (step S34; YES), the CPU 11 refers to the reading information table 40 stored in the flash memory 17, and is determined to be within the angle of view in step S34. Read direction information 43 corresponding to the read position information 42 is acquired. Further, the CPU 11 calculates a distance between the reading position information 42 acquired in step S34 and the position information of the user (mobile terminal 10) acquired in step S33. Further, the CPU 11 reads the reading position and mark corresponding to the calculated distance and the acquired reading direction information 43 on the preview image displaying the mark on the display unit 14 and the position corresponding to the reading position information 42 acquired in step S34. (Step S35).

  Then, the CPU 11 performs the RFID reader / writer unit based on the distance between the reading position information 42 calculated in step S35 and the position information of the user (mobile terminal 10) and the reading direction information 43 acquired in step S35. It is determined whether or not 18 (portable terminal 10) is in a range (distance and azimuth) in which the RFID tag 30 can be read (step S36).

  If the previous reading position is not within the angle of view in the imaging direction (step S34; NO), the CPU 11 displays on the preview image being displayed on the display unit 14 that there is no previous reading position in the imaging direction (step S37). The process proceeds to step S33. In addition, it is good also as a structure which transfers to step S33, without performing step S37. Steps S38 to S42 are the same as steps S20 to S24 of the first information reading process in FIG.

  As described above, according to this modification, the mobile terminal 10 displays the preview image captured by the imaging unit 20 on the display unit 14 and reads the RFID reader / writer unit 18 from the orientation information detected by the orientation magnetic needle unit 21. First guidance information indicating all previous reading position information and previous reading direction information stored in the flash memory 17 for the direction information acquired and the position information detected by the motion sensor 19 and the acquired reading direction information. Is displayed in the preview image to notify the user.

  For this reason, the user can easily confirm the previous reading position information and the previous reading direction information of the RFID tags 30 of all the reading objects visually, and the work load and the work time for searching for the reading objects to which the RFID tags 30 are attached. Can be reduced.

(Second modification)
With reference to FIG. 9, the 2nd modification of the said embodiment is demonstrated. FIG. 9 shows a third information reading process.

  In the above embodiment, when the position information of the mobile terminal 10 and the reading direction information of the RFID reader / writer unit 18 are in a readable range, the RFID reader / writer unit 18 outputs a radio wave or an electromagnetic field to output the RFID tag 30. The configuration was to read information. In this modification, the RFID reader / writer unit 18 always outputs a radio wave or an electromagnetic field and performs polling to read information from the RFID tag 30.

  The device configuration of this modification uses the portable terminal 10 as in the above embodiment. However, it is assumed that the ROM 15 stores a third information reading program instead of the first information reading program 151.

  With reference to FIG. 9, operation | movement of the portable terminal 10 of this modification is demonstrated. The third information reading process executed by the portable terminal 10 is a process of displaying and guiding the reading position and reading direction of a plurality or a single RFID tag 30 to the user and reading the information of the guided RFID tag 30. is there. In the mobile terminal 10, for example, triggered by the execution instruction input of the third information reading process from the user via the operation unit 12, the CPU 11 is read from the ROM 15 and appropriately expanded in the RAM 13. The third information reading process is executed in cooperation with the third information reading program.

  Steps S51 and S52 are the same as steps S31 and S32 of the second information reading process of FIG. After executing step S <b> 52, the CPU 11 starts a polling process for outputting radio waves or electromagnetic fields from the RFID reader / writer unit 18 and reading information (individual identification information) stored in the RFID tag 30. Further, the CPU 11 refers to the read information table 40 stored in the flash memory 17 and creates a list of individual identification information 41 of all records (step S53). Step S54 is the same as step S33 of the second information reading process of FIG.

  After executing step S54, the CPU 11 refers to the list created in step S53 and the reading information table 40 stored in the flash memory 17, and reads the reading position information 42 and reading corresponding to the individual identification information in the list. Direction information 43 is acquired. Further, the CPU 11 uses the position information of the user (mobile terminal 10) acquired in step S54 to acquire the acquired read position information 42 within the angle of view of the preview image corresponding to the orientation information of the imaging direction acquired in step S54. When there is a previous reading position, the distance between the reading position information 42 and the position information of the user (mobile terminal 10) acquired in step S54 is calculated. Further, the CPU 11 displays a mark corresponding to the calculated distance and the acquired reading direction information 43 at a position corresponding to the acquired reading position information 42 on the preview image being displayed on the display unit 14 (step S55). ).

  Steps S56 and S57 are the same as steps S39 and S40 of the second information reading process of FIG. After executing step S57, the CPU 11 deletes the individual identification information stored in step S57 from the list created in step S53, and deletes the mark corresponding to the individual identification information from the preview image (step S58). Thereafter, even if step S55 is executed, the mark relating to the individual identification information deleted from the list is also deleted from the preview image.

  Step S59 is the same as step S41 of the second information reading process in FIG. Then, the CPU 11 determines whether or not there is a record remaining in the list created in step S53 (step S60). When there is a record remaining in the list (step S60; YES), the process proceeds to step S54. If there is no record remaining in the list (step S60; NO), step S61 is executed, and the third information reading process ends. Step S61 is the same as step S42 of the second information reading process in FIG.

  As described above, according to the present modification, the portable terminal 10 always performs polling for causing the RFID reader / writer unit 18 to read the RFID tag 30 after the start of the third information reading process for reading the RFID tag. For this reason, the reading position information and reading direction information of the RFID tag 30 that has been read unexpectedly can also be stored in the flash memory 17 as the previous reading position information and the previous reading direction information, and an operation of searching for an object to be read with the RFID tag 30 attached thereto. The burden and working time can be further reduced.

  Further, when the RFID reader / writer unit 18 reads the individual identification information of the RFID tag 30 corresponding to the mark while the mark is being displayed, the mobile terminal 10 displays the mark corresponding to the read RFID tag 30. Clear the display. For this reason, since the mark corresponding to the read RFID tag 30 is not displayed in the preview image, the mark indicating the previous reading position information and the previous reading direction information that needs to be read can be more easily confirmed by visual observation. It is possible to further reduce the work load and the work time for searching for a reading object to which the RFID tag 30 is attached.

(Third Modification)
A third modification of the above embodiment will be described with reference to FIG. FIG. 10 shows a functional configuration of the mobile terminal according to the present modification.

  In this modification, 10 A of portable terminals shown in FIG. 10 are used instead of the portable terminal 10 of the said embodiment. Of the respective parts of the mobile terminal 10A, parts similar to those of the mobile terminal 10 are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 10, the mobile terminal 10A includes a CPU 11, an operation unit 12, a RAM 13, a display unit 14, a ROM 15, a wireless communication unit 16, a flash memory 17, an RFID reader / writer unit 18, a GPS A (Global Positioning System) unit 19 </ b> A, an imaging unit 20, a compass unit 21, and a power supply unit 22 are provided. Each unit of the mobile terminal 10 </ b> A except the power supply unit 22 is connected to each other via a bus 23.

  The GPS unit 19A receives a GPS signal from a GPS satellite, calculates the position information (latitude and longitude information) of the horizontal plane of the portable terminal 10A using the information of the GPS signal, detects this position information, and sends it to the CPU 11. Output.

  GPS signals from GPS satellites can be used outdoors. In addition, the CPU 11 of the mobile terminal 10A performs a first information reading process. For this reason, the portable terminal 10A is used for the purpose of reading and managing the RFID tag 30 attached to the outdoor reading object.

  For example, as an object to be read, an RFID tag 30 is attached to an outdoor water meter, an electric meter, etc., and a worker (user) carrying the portable terminal 10A reads information on the RFID tag 30 such as a water meter, Manage the location and presence of In addition, an operator who carries the portable terminal 10A by attaching the RFID tag 30 to a container as a reading object at a port or the like can manage the position and presence of the container.

  As described above, according to this modification, the mobile terminal 10 detects the position information of the mobile terminal 10A by the GPS unit 19A. For this reason, the mark of the previous reading position information and the previous reading direction information of the RFID tag 30 attached to the reading object in the outdoor facility can be displayed.

In the above description, the example in which the ROM 15 is used as the computer-readable medium of the program according to the present invention is disclosed, but the present invention is not limited to this example.
As other computer-readable media, a non-volatile memory such as a flash memory and a portable recording medium such as a CD-ROM can be applied.
A carrier wave is also applied to the present invention as a medium for providing program data according to the present invention via a communication line.

  Note that the description in the above embodiment and each modification is an example of the portable terminal and the program according to the present invention, and the present invention is not limited to this. For example, it is good also as a structure which combines at least 2 of the said embodiment and each modification suitably. For example, the mobile terminal 10A according to the third modification may be configured to execute the second or third information reading process according to the first or second modification.

  In the above embodiment and each modification, the mobile terminals 10 and 10A are handy terminals including the RFID reader / writer unit 18, but the present invention is not limited to this. As the portable terminal, other portable terminals such as a PDA (Personal Digital Assistant), a cellular phone, and a portable personal computer may be used.

  Moreover, in the said embodiment and each modification, an RFID card (non-contact IC card) is included in the RFID tag 30.

  In the above-described embodiment and each modification, the mobile terminals 10 and 10A display the preview image captured by the imaging unit 20 on the display unit 14, and the previous reading position information, the previous reading direction information, and the like are included in the preview image. However, the present invention is not limited to this. For example, a mark as guide information indicating the previous reading position information, the previous reading direction information, and the like may be displayed on the display unit 14 in a state where no preview image is displayed. Furthermore, it is good also as a structure which alert | reports the guidance information which shows the last reading position information, the last reading direction information, etc. by the other alerting | reporting methods, such as an audio | voice output and a character display, with or without a preview image display.

  Moreover, in the said embodiment and each modification, although the positional information on the portable terminals 10 and 10A was detected using the motion sensor 19 or GPS part 19A as a positional information detection part, it is not limited to this. The position information detection unit may be configured to detect the position information of the mobile terminal by trilateral survey using radio wave reception from the access point using the wireless communication unit 16 of the mobile terminal.

  Moreover, in the said embodiment and each modification, although it was set as the structure which detects the positional information on the portable terminals 10 and 10A as two-dimensional positional information on a horizontal surface, it is not limited to this. The position information detection unit may include an altimeter in addition to the two-dimensional position information detection unit of the motion sensor or the GPS unit, and may detect the position information in the three-dimensional space of the mobile terminals 10 and 10A.

  Moreover, in the said embodiment and each modification, although it was the structure which does not change the output level of the electromagnetic wave or electromagnetic field at the time of reading of the RFID reader / writer part 18, it is not limited to this. For example, when the reading position information and reading direction information of the mobile terminals 10 and 10A cannot be read even in the vicinity of the previous reading position information and the previous reading direction information, the radio wave or electromagnetic field output level of the RFID reader / writer unit 18 is set. It is good also as a structure made high. Furthermore, when the reading position information and reading direction information of the mobile terminals 10 and 10A cannot be read even in the vicinity of the previous reading position information and the previous reading direction information, “change the orientation of the mobile terminal (reading direction of the RFID tag). It is good also as a structure which alert | reports guidance information, such as "Please try."

  Moreover, in the said embodiment and each modification, although the reading information table 40 was set as the structure which stores the reading position information 42 and the reading direction information 43 for every record of the individual identification information 41 one by one, It is not limited. The reading information table 40 may store a plurality of pieces of reading position information 42 and reading direction information 43 for each record of the individual identification information 41. A plurality of marks indicating a plurality of reading position information 42 and reading direction information 43 may all be displayed for one piece of individual identification information 41, and the marks are displayed in different colors (for example, the latest reading mark is red, Other marks may be gray). Further, for the plurality of marks, the reading marks may be displayed one by one (for example, the latest reading mark is displayed first), and if the reading is not possible, the next reading mark may be displayed.

  In addition, it is needless to say that the detailed configuration and detailed operation of each component of the mobile terminal 10 and 10A in the embodiment and each modification can be appropriately changed without departing from the gist of the present invention. is there.

Although the embodiments and modifications of the present invention have been described, the scope of the present invention is not limited to the above-described embodiments and modifications, and the scope of the invention described in the claims and equivalents thereof are described. Includes range.
The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
A reading unit that reads identification information of the RFID tag from the RFID tag via a radio wave or an electromagnetic field;
A position information detection unit for detecting position information of the portable terminal of the own device;
An orientation information detector for detecting orientation information of the mobile terminal;
A storage unit for storing information;
An informing unit for informing information;
When the identification information of the RFID tag is read by the reading unit, the reading direction information of the reading unit is acquired from the direction information when the identification information of the RFID tag detected by the direction information detecting unit is read. Then, the position information when the identification information of the RFID tag detected by the position information detection unit is read and the acquired reading direction information are used as the previous reading position information and the previous reading direction information of the RFID tag. A storage control unit that stores the information in the storage unit in association with the identification information;
The reading direction information of the reading unit is acquired from the direction information detected by the direction information detecting unit, and stored in the storage unit for the position information detected by the position information detecting unit and the acquired reading direction information. A notification control unit that notifies the notification unit of guidance information indicating the previous reading position information and the previous reading direction information.
<Claim 2>
It has an operation unit that accepts selection input of an RFID tag to be read,
The notification control unit acquires the reading direction information of the reading unit from the direction information detected by the direction information detection unit, the position information detected by the position information detection unit, and the acquired reading direction information The portable terminal according to claim 1, wherein the notifying unit is notified of guidance information indicating previous reading position information and previous reading direction information of the selected RFID tag to be read stored in the storage unit.
<Claim 3>
The notification control unit acquires the reading direction information of the reading unit from the direction information detected by the direction information detection unit, the position information detected by the position information detection unit, and the acquired reading direction information The portable terminal according to claim 1, wherein the notification unit is notified of guide information indicating previous reading position information and previous reading direction information of all RFID tags to be read stored in the storage unit.
<Claim 4>
An imaging unit for imaging a subject;
The notification unit is a display unit,
The notification control unit displays a preview image captured by the imaging unit on the display unit, acquires reading direction information of the reading unit from direction information detected by the direction information detection unit, and the position information The previous reading position in the preview image is the first reading information indicating the previous reading position information and the previous reading direction information stored in the storage unit with respect to the position information detected by the detection unit and the acquired reading direction information. The portable terminal as described in any one of Claim 1 to 3 displayed on these.
<Claim 5>
The mobile terminal according to claim 4, wherein the notification control unit displays the first guidance information at a previous reading position in the preview image in a size corresponding to a depth of the previous reading position.
<Claim 6>
The notification control unit acquires the imaging direction of the imaging unit from the orientation information detected by the orientation information detection unit, and the previous reading position is outside the preview image using the previous reading position information and the acquired imaging direction. The second guidance information indicating the direction in which the previous reading position is present is displayed in the preview image when the previous reading position is outside the preview image. The portable terminal as described in.
<Claim 7>
The notification control unit calculates a distance between the position information detected by the position information detection unit and the previous reading position information stored in the storage unit, and the calculated distance is equal to or greater than a predetermined distance. The mobile terminal according to any one of claims 4 to 6, wherein third guidance information for an instruction to approach the previous reading position is displayed in the preview image.
<Claim 8>
The notification control unit determines whether the position information detected by the position information detection unit and the acquired reading direction information are in the previous reading position information and the previous reading direction information stored in the storage unit. 8. When the position information and the reading direction information are in the previous reading position information and the previous reading direction information, the RFID tag is read by outputting a radio wave or an electromagnetic field to the reading unit. The portable terminal as described in any one.
<Claim 9>
The mobile terminal according to claim 1, wherein the notification control unit causes the reading unit to constantly perform polling for reading the RFID tag.
<Claim 10>
The said notification control part stops the notification of the guidance information corresponding to the said RFID tag when the identification information of the RFID tag is read by the said reading part. Mobile devices.
<Claim 11>
A computer installed in a mobile device
A reading unit that reads identification information of the RFID tag from the RFID tag via a radio wave or an electromagnetic field;
A position information detector for detecting position information of the mobile terminal;
An orientation information detector for detecting orientation information of the mobile terminal;
A storage unit for storing information;
An informing unit for informing information,
When the identification information of the RFID tag is read by the reading unit, the reading direction information of the reading unit is acquired from the direction information when the identification information of the RFID tag detected by the direction information detecting unit is read. Then, the position information when the identification information of the RFID tag detected by the position information detection unit is read and the acquired reading direction information are used as the previous reading position information and the previous reading direction information of the RFID tag. A storage control unit for storing in the storage unit in association with identification information;
The reading direction information of the reading unit is acquired from the direction information detected by the direction information detecting unit, and stored in the storage unit for the position information detected by the position information detecting unit and the acquired reading direction information. A notification control unit for notifying the notification unit of guidance information indicating the previous reading position information and the previous reading direction information,
Program to realize as.

10, 10A portable terminal 11 CPU
12 Operation unit 13 RAM
14 Display 15 ROM
16 Wireless communication unit 17 Flash memory 18 RFID reader / writer unit 19 Motion sensor 19A GPS unit 20 Imaging unit 21 Azimuth magnetic needle unit 22 Power source unit 23 Bus 30, 31 RFID tag

Claim 1 includes a current position to a portable terminal having acquisition means for acquiring, storage control means for storing the position information of the current position acquired in the previous SL acquisition means in the storage means in association with identification information , in the after storage of the position information by the storage control means, wherein when the identification information is selected, the store the location information stored in association with the selected identification information in an arbitrary position And a guidance output unit that reads out from the unit and outputs a guidance based on the current position of the portable terminal.
Claim 3 is a portable terminal provided with an acquisition means for acquiring the current position, and when performing the acquisition process of the predetermined information , reads the position information stored in the storage means in association with the predetermined information , Determining means for determining whether or not the position based on the position information is in the vicinity of the current position acquired by the acquiring means; and when the determining means determines that the position is in the vicinity , the predetermined information at the current position And a process control means for executing the acquisition process.
8. is a portable terminal having an acquisition unit that acquires a current position, the detection means mobile terminal detects a direction that has towards the position information stored in the storage means in association with the specific position And determining whether or not the position information is in the direction of the mobile terminal detected by the detection means with reference to the current position of the mobile terminal acquired by the acquisition means and means, when it is determined that the first determination means, before Symbol specific position is characterized by comprising a second discriminating means for discriminating whether or not in the vicinity of the current position.

Claims (12)

A portable terminal having an acquisition means for acquiring a current position,
Storage control means for storing a plurality of position information of the current position acquired by the acquisition means at a plurality of arbitrary positions in the storage means in association with identification information;
Selecting means for selecting arbitrary identification information among a plurality of identification information stored in the storage means;
Guidance output means for reading out position information stored in association with the identification information selected by the selection means from the storage means, and outputting guidance based on the current position of the mobile terminal;
A portable terminal comprising: Detecting means for detecting a direction in which the mobile terminal is facing;
Further comprising
The guidance output means includes the current position of the portable terminal acquired by the acquisition means, the direction detected by the detection means, and the position information stored in association with the identification information selected by the selection means. Based on the above, a guidance output is made at which position and in which direction.
The mobile terminal according to claim 1. A portable terminal having an acquisition means for acquiring a current position,
When performing an information acquisition process at a specific position, the position information stored in the storage unit is read in association with the specific position, and whether the position based on the position information is in the vicinity of the current position acquired by the acquisition unit. Determining means for determining whether or not
A process control means for executing an information acquisition process at the current position when the determination means determines that the position is in the vicinity;
A portable terminal comprising: The process control means determines whether or not information acquisition based on the information acquisition process is possible at the current position when the determination means determines that the position is in the vicinity, and if information acquisition is possible Control to store the acquired information,
The mobile terminal according to claim 3. The process control means determines whether or not information acquisition based on the information acquisition process is possible at the current position when the determination means determines that the position is in the vicinity, and if information acquisition is possible Control to update and store the current position information as position information corresponding to the specific position in the storage means;
The mobile terminal according to claim 3. Detecting means for detecting a forward direction in which the mobile terminal is facing;
It is determined whether or not the position information stored in the storage means is in the forward direction of the mobile terminal detected by the detection means with reference to the current position of the mobile terminal acquired by the acquisition means. A second discriminating means;
Further comprising
The determination means determines whether or not the position by the position information is in the vicinity of the current position when the second determination means determines that the position is in the forward direction.
The mobile terminal according to claim 3, wherein the mobile terminal is a mobile terminal. A guidance output means for guiding and outputting that the position of the position information is closer when the determination means determines that the position is not in the vicinity;
The mobile terminal according to claim 3, further comprising: A portable terminal having an acquisition means for acquiring a current position,
Detecting means for detecting a forward direction in which the mobile terminal is facing;
The position information stored in the storage means in association with the specific position is read, and the position information is detected in front of the mobile terminal detected by the detection means with reference to the current position of the mobile terminal acquired by the acquisition means. First discriminating means for discriminating whether or not the vehicle is in a direction;
Second determination means for determining whether or not the specific position based on the position information is in the vicinity of a current position when the first determination means determines that the position is in the forward direction;
A portable terminal comprising: Guidance output means for guiding and outputting that the position of the position information is further approached when it is determined by the second determination means that the position is not in the vicinity;
The mobile terminal according to claim 8, further comprising: A program for controlling a computer of a portable terminal having an acquisition means for acquiring a current position,
The computer,
Storage control means for storing a plurality of position information of the current position acquired by the acquisition means at a plurality of arbitrary positions in the storage means in association with identification information;
Selecting means for selecting arbitrary identification information from among a plurality of identification information stored in the storage means;
Guidance output means for reading out position information stored in association with the identification information selected by the selection means from the storage means, and outputting guidance based on the current position of the mobile terminal;
A program designed to function as A program for controlling a computer of a portable terminal having an acquisition means for acquiring a current position,
The computer,
When performing an information acquisition process at a specific position, the position information stored in the storage unit is read in association with the specific position, and whether the position based on the position information is in the vicinity of the current position acquired by the acquisition unit. Discriminating means for discriminating
A process control means for executing an information acquisition process at the current position when the determination means determines that the position is in the vicinity;
A program designed to function as A program for controlling a computer of a portable terminal having an acquisition means for acquiring a current position,
The computer,
Detecting means for detecting a forward direction in which the portable terminal is facing;
The position information stored in the storage means in association with the specific position is read, and the position information is detected in front of the mobile terminal detected by the detection means with reference to the current position of the mobile terminal acquired by the acquisition means. First discriminating means for discriminating whether or not the vehicle is in a direction;
A second discriminating unit that discriminates whether or not the specific position based on the positional information is in the vicinity of a current position when the first discriminating unit determines that the vehicle is in the forward direction;
A program designed to function as

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