JP6482327B2 - Wireless tag and information processing system - Google Patents

Description

  The present invention relates to a wireless tag and an information processing system.

  Conventionally, as an example of managing the trend of a person holding a wireless tag, for example, when an operator holding a wireless tag passes through an entrance of a building, the wireless tag of the worker receives a trigger ID signal generated by a trigger transmitter. The tag information including the trigger ID signal and the tag ID is transmitted. When this tag information is received by the receiver, the receiver adds time information to the received tag information and transfers it to the host. A dynamic management system has been proposed in which the host detects from the received information that the worker holding the wireless tag has passed through the entrance of the building (see Patent Document 1).

The tag of Patent Document 1 is a semi-active tag that uses the received trigger ID signal as a trigger and outputs an ID number together with information for specifying the trigger ID signal.
An active tag is also known that transmits information to another device at an arbitrary timing regardless of whether or not a trigger signal is received.

JP 2010-41475 A

By the way, the semi-active tag and the active tag have different features. For example, the semi-active tag is excellent in terms of power consumption because it is in a sleep state except when responding to a trigger signal. On the other hand, since an active tag does not require the installation of a trigger transmitter, it is suitable when it is difficult to install the trigger signal transmitter or when it is desired to reduce the installation cost. Therefore, either a semi-active tag or an active tag is used alternatively according to the situation in which the tag is used.
However, in the conventional tag, the semi-active tag does not operate as an active tag, and the active tag does not operate as a semi-active tag. That is, one tag selected alternatively can flexibly switch between a plurality of operation modes. For example, in some cases, it operates as a semi-active tag, and in other cases, it does not operate as an active tag.

  In view of such circumstances, it is an object of the present invention to provide a wireless tag that can flexibly switch operation modes.

  The wireless tag according to one embodiment of the present invention switches an operation mode from a first operation mode to a second operation mode when a reception unit that receives an input from the outside and a predetermined input is received by the reception unit Control means.

  The information processing system according to an aspect of the present invention includes a transmitter that transmits an area ID unique to the area in an area associated with the own device, and the area ID and tag ID when the area ID is received. If the area ID is not received, the wireless tag that transmits the second tag information including the tag ID and the reception that transfers the first tag information or the second tag information are transmitted. And a host for determining the position of the tag based on the first tag information, or for determining that the wireless tag is present in a predetermined area based on the second tag information, If it is determined by the host that the wireless tag is present in the first area where the transmitter is installed, the wireless tag receives the area ID and the first tag information is provided. The wireless tag operates in the first mode for transmission, and when the host determines that the wireless tag is present in the second area where the transmitter is not installed, the wireless tag includes the second tag information. An information processing system that operates in a second mode in which the information is transmitted at an arbitrary timing.

  The present invention can provide a wireless tag capable of flexibly switching operation modes.

It is a figure showing an example of an information processing system concerning the present invention. It is a block diagram showing a case where a wireless tag operates in a semi-active mode. It is a block diagram showing a case where a wireless tag operates in an active mode. It is a block diagram which shows an example of a transmitter. It is a block diagram which shows an example of a wireless tag. It is a block diagram which shows an example of a receiver. It is a figure which shows an example of the radio | wireless tag management system in one Embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 are block diagrams illustrating an example of an information processing system according to an embodiment. FIG. 2A is a block diagram illustrating a case where the wireless tag operates in a semi-active mode in the present embodiment, and FIG. 2B is a block diagram illustrating a case where the wireless tag operates in an active mode.

  As will be described later, the present invention includes a wireless tag that can operate in a semi-active tag mode and an active mode, and that can flexibly control which mode is operated based on a predetermined condition. For example, when a wireless tag is operating in a semi-active mode that transmits tag information of a wireless tag on the condition that a trigger from an external device such as a transmitter is received, the wireless tag has reached a predetermined condition In such a case, the operation mode is controlled to be switched so as to operate in an active mode in which tag information of the wireless tag is transmitted at an arbitrary timing. Further, when the wireless tag is operating in the active mode, the wireless tag switches and controls the operation mode so as to operate in the semi-active mode when a predetermined condition is reached.

  Here, the predetermined condition means that the wireless tag has received a control command for switching the operation mode, that the duration of a certain operation mode has reached a predetermined time, and that the wireless tag has received tag information in a certain operation mode. This includes, but is not limited to, that the number of times of transmission has reached a predetermined number of times, or that the wireless tag has received an operation mode switching instruction from the user. The wireless tag accepts an operation mode control instruction from the user when, for example, the wireless tag is provided with a mechanical switch for switching the operation mode, and the user switches the switch. That the wireless tag accepts the control signal. In this way, various conditions can be supplied to the wireless tag as control information (control command), and the operation mode of the wireless tag can be flexibly controlled.

  The information processing system 10 illustrated in FIG. 1 exemplarily includes a transmitter 12, a wireless tag 14, a receiver 16, and a host 18.

For example, the transmitter 12 transmits a command in a predetermined area associated with the transmitter 12. For example, the transmitter 12 transmits an activation signal for activating the wireless tag 14 and control information (control command) described later as a command. The activation signal may include a trigger ID (area ID) unique to the area. Here, the activation includes returning from the sleep state.
Further, when the transmitter 12 acquires command information for controlling the wireless tag 14 from the receiver 16 as a response signal, the transmitter 12 transmits control information (control command) including the command information in a predetermined area. . Examples of the control command include an operation mode control command for controlling the operation mode of the wireless tag 14. The control command may further include a control condition command indicating a condition for controlling the transmitter 12. For example, the control condition command may include information regarding a condition for maintaining a predetermined operation mode or a condition for switching the predetermined operation mode. The control condition command includes, for example, at least one of a set time indicating a (maximum) time during which the predetermined operation mode is continued and a set number of times indicating the number of times (upper limit) the wireless tag 14 has performed a predetermined operation in the operation mode. May be included.
The transmitter 12 may transmit intermittently in consideration of power saving when transmitting.

In the present embodiment, the wireless tag 14 is configured to be operable in at least two operation modes described below. Specifically, the operation mode of the wireless tag 14 includes (1) a semi-active mode and (2) an active mode.
(1) Semi-active mode As shown in FIG. 2A, the wireless tag 14 transmits information to another device when a trigger or control command is received from the transmitter 12. For example, in the semi-active mode, the wireless tag 14 transmits tag information to be described later every time a trigger or control command is received from the transmitter 12.
(2) Active Mode As shown in FIG. 2B, the wireless tag 14 transmits information to another device at an arbitrary timing without receiving a trigger or the like from the transmitter 12. For example, in the active mode, the wireless tag 14 transmits tag information to be described later.
Note that the wireless tag 14 may be configured to be operable in a passive mode. For example, in the passive mode, the wireless tag 14 can be operated by power supplied from another device such as the transmitter 12 or the receiver 16, and then transmits information to the other device. In the wireless tag 14 operating in the passive mode, it is assumed that a normal power supply is not provided. However, even if the wireless tag 14 is provided with a power supply, it is passive when the power supply fails for some reason. The operation mode may be controlled so as to be operable in the mode.

  When the wireless tag 14 operates in the semi-active mode, as shown in FIG. 2A, the wireless tag 14 is activated when receiving the activation signal, and transmits a request signal for requesting a control command. Further, when the wireless tag 14 receives an activation signal including an area ID, the wireless tag 14 transmits tag information including a tag ID for identifying the device itself and the area ID to the receiver 16.

  When receiving a control command from the transmitter 12, the wireless tag 14 controls the operation mode based on the received operation mode control command when the control command includes an operation mode control command for controlling the operation mode of the wireless tag 14. In the present embodiment, since the wireless tag 14 operates in the “semi-active mode”, for example, the wireless tag 14 is switched to the “active mode”. The wireless tag 14 may be configured to switch from the “semi-active mode” to the “passive mode”.

Further, when the wireless tag 14 receives the control command from the transmitter 12, when the control command includes a control condition command, the comparison result between the duration of the operation mode and the set time included in the control condition command, and the Based on at least one of the comparison results between the number of times the wireless tag 14 transmits tag information described later in the operation mode and the set number of times included in the control condition command, the operation mode is switched or the operation in the operation mode is performed. To control. Specifically, the wireless tag 14 has at least one of a case where the duration of the operation mode exceeds a set time and a case where the number of times the wireless tag 14 transmits tag information in the operation mode exceeds the set number of times. In some cases, the operation mode is controlled or the operation in the operation mode is controlled. In addition, the wireless tag 14 has at least one of the case where the duration of the operation mode exceeds the set time and the number of times the wireless tag 14 transmits tag information in the operation mode exceeds the set number of times. Additional information is added to tag information transmitted in the operation mode. For example, the additional information is information related to the timing at which the wireless tag 14 transmits the tag information.
The wireless tag 14 is attached to an object such as a person or a vehicle.

When receiving the request signal, the receiver 16 transmits a control command based on the request signal to the transmitter 12 as a response signal to the received request signal. For example, the receiver 16 transmits to the transmitter 12 an operation mode control command and / or a control condition command transmitted in a predetermined area associated with the transmitter 12.
Further, when receiving the tag information including the tag ID and the area ID, the receiver 16 transmits the tag information to the host 18. For example, the host 18 can set which control signal is transmitted when the receiver 16 receives the tag information.
Furthermore, when the operation mode is controlled based on the operation control command in the wireless tag 14, the receiver 16 receives the tag information from the wireless tag 14 in which the operation mode is controlled. The tag information to which the installation position information shown is further added is transmitted to the host 18. Further, the receiver 16 may add the time information to the tag information and transmit it to the host 18.

  The host 18 determines the position of the person or object holding the wireless tag 14 based on the tag information output from the receiver 16. For example, the host 18 determines the position of the wireless tag 14 based on the tag information including the tag ID and the area ID unique to the area transmitted within a predetermined area associated with the transmitter 12. Further, the host 18 can set the output of the receiver 16. For example, the host 18 can set which control signal is output when the receiver 16 acquires the request signal. Further, the host 18 changes the control condition command. For example, the host 18 is changed so that the set time becomes longer or shorter, and changed so that the set number of times increases or decreases. When the host 18 changes the control condition command, the wireless tag 14 is configured to switch and control the operation mode based on the changed control condition command, or to control the operation in the operation mode. ing.

  As described above, the case where the wireless tag 14 operates in the semi-active mode has been described with reference to FIG. 2A. Hereinafter, the case where the wireless tag 14 operates in the active mode will be described with reference to FIG. 2B. Portions overlapping with the description when the wireless tag 14 operates in the semi-active mode will be omitted as appropriate, and different portions will be particularly described.

  When the wireless tag 14 operates in the active mode, as shown in FIG. 2B, the wireless tag 14 receives tag information including a tag ID for identifying its own device without receiving a trigger or the like from the transmitter 12. To the machine 16.

  When the received control command includes an operation mode control command for controlling the operation mode of the wireless tag 14, the wireless tag 14 controls the operation mode based on the received operation mode control command. In the present embodiment, since the wireless tag 14 operates in the “active mode”, for example, the wireless tag 14 is switched to the “semi-active mode”. The wireless tag 14 may be configured to switch from the “active mode” to the “passive mode”.

  When receiving the tag information including the tag ID, the receiver 16 transmits the tag information to the host 18. Further, when receiving the tag information from the wireless tag 14, the receiver 16 transmits the tag information to which the installation position information indicating the installation position of the own apparatus is further added to the host 18. Further, the receiver 16 may add the time information to the tag information and transmit it to the host 18.

Based on the tag information from the output of the receiver 16, the host 18 holds the wireless tag 14, or a person or an object exists in a predetermined area associated with the receiver 16 or exists. Determine that.
Next, a specific configuration of each device will be described.

  FIG. 3 is a block diagram illustrating an example of the configuration of the transmitter 12. As shown in FIG. 3, the transmitter 12 exemplarily includes a communication circuit 20, a power supply circuit 22, a one-chip microcomputer 24, a signal generation circuit 28, an output circuit 30, a resonance adjustment circuit 32, and an antenna. 36.

  When receiving each control command as a response signal from the receiver 16, the communication circuit 20 outputs each control command to the one-chip microcomputer 24. The power supply circuit 22 supplies DC power (for example, DC 12 V) to each part of the transmitter 12.

  The one-chip microcomputer 24 includes a CPU, a RAM, a ROM, and an input / output interface. The one-chip microcomputer 24 controls the signal generation circuit 28 to generate an activation signal that activates the wireless tag 14. Further, the one-chip microcomputer 24 performs resonance control for the resonance adjustment circuit 32. For example, the one-chip microcomputer 24 executes a calculation for transmitting a start signal and outputs the execution result to the signal generation circuit 28.

  In addition, when the one-chip microcomputer 24 acquires a control command (for example, an operation control command, a control condition command, etc.) for controlling the wireless tag 14, it executes a calculation for transmitting the control command and displays the execution result. The signal is output to the signal generation circuit 28. The area ID is, for example, 8 bits.

  The signal generation circuit 28 generates a start signal and a control command based on the calculation result of the one-chip microcomputer 24, and outputs the generated start signal and control command to the output circuit 30. The output circuit 30 transmits the activation signal and control command generated by the signal generation circuit 28 to a predetermined area via the antenna 36.

  At this time, the resonance adjustment circuit 32 adjusts resonance such as area ID (signal). Note that the number of bits of the activation signal and the control command can be changed as compared with the area ID.

  FIG. 4 is a block diagram illustrating an example of the configuration of the wireless tag 14. As illustrated in FIG. 4, the wireless tag 14 exemplarily includes a reception antenna 40, a detection circuit 42, a one-chip microcomputer 44, a power supply 46, a frequency control circuit 48, an oscillation / modulation circuit 50, and an output. A circuit 52 and a transmission antenna 54 are provided.

  The reception antenna 40 outputs the received activation signal and control command to the detection circuit 42 when receiving the activation signal and control command within a predetermined area of the transmitter 12. The receiving antenna 40 outputs the received area ID to the detection circuit 42 when receiving a control command including an area ID as a predetermined radio wave (for example, 93.75 kHz) within a predetermined area of the transmitter 12. To do.

  When the receiving antenna 40 receives the activation signal or control command, the detection circuit 42 sends the activation detection signal based on the received activation signal or the area detection signal or command detection signal to the one-chip microcomputer 44 based on the received control command. Output.

  The one-chip microcomputer 44 controls the frequency control circuit 48, the oscillation / modulation circuit 50, and the output circuit 52 in order to transmit a request signal as a calculation process when the activation detection signal is input from the detection circuit 42. Perform arithmetic processing.

  Further, the one-chip microcomputer 44 transmits tag information including the area ID and / or the tag ID as a calculation process when the area detection signal is input from the detection circuit 42, that is, when the receiving antenna 40 receives the area ID. For this purpose, arithmetic processing for controlling the frequency control circuit 48, the oscillation / modulation circuit 50, and the output circuit 52 is executed.

  Further, when a command detection signal is input from the detection circuit 42, the one-chip microcomputer 44 controls the wireless tag 14 based on the control contents of each control command indicated by the command detection signal. For example, when the control command includes an operation mode control command for controlling the operation mode of the wireless tag 14, the one-chip microcomputer 44 controls the operation mode based on the received operation mode control command. Further, when the control command is received from the transmitter 12 and the control command includes the control condition command, the one-chip microcomputer 44 compares the duration of the controlled operation mode with the set time included in the control condition command. And switching control of the operation mode based on at least one of the comparison results between the number of times the wireless tag 14 transmits tag information described later in the operation mode and the set number of times included in the control condition command, or Controls the operation in the operation mode. Further, when the control condition command is changed by the host 18, the one-chip microcomputer 44 controls the operation mode based on the changed control condition command, or controls the operation in the operation mode.

  The frequency control circuit 48 and the oscillation / modulation circuit 50 execute each process according to each calculation result of the one-chip microcomputer 44.

  The output circuit 52 transmits a request signal and tag information including an area ID and a tag ID from the transmission antenna 54 using, for example, a 300 MHz band radio wave.

  FIG. 5 is a block diagram illustrating an example of the configuration of the receiver 16. As illustrated in FIG. 5, the receiver 16 illustratively includes a reception antenna 60, a reception circuit 61, a demodulation circuit 62, a power supply circuit 63, a memory 64, a one-chip microcomputer 66, and a LAN communication circuit 70. And a digital input / output (DI / DO) circuit 72 and a communication circuit 76. The LAN communication circuit 70 is connected to the host 18 via the LAN 74.

  When receiving the tag information transmitted from the transmission antenna 54 via the reception antenna 60, the reception circuit 61 outputs the tag information to the demodulation circuit 62 as digital tag information. The reception circuit 61 outputs the request signal to the demodulation circuit 62 when the request signal transmitted from the transmission antenna 54 is received via the reception antenna 60.

  The demodulating circuit 62 demodulates the tag information and the request signal output from the receiving circuit 61 and outputs the demodulation result to the one-chip microcomputer 66. The power supply circuit 63 supplies DC power to each part of the receiver 16.

The one-chip microcomputer 66 processes the demodulation result from the demodulation circuit 62 and the data in the memory 64. For example, when the one-chip microcomputer 66 acquires tag information to which the installation position information of the receiver 16 is added as a demodulation result, the one-chip microcomputer 66 transfers the tag information to the host 18 via the LAN communication circuit 70 and the LAN 74. Further, when the one-chip microcomputer 66 acquires a request signal as a demodulation result, the one-chip microcomputer 66 outputs each control command to the communication circuit 76. Which control command is to be output may be set in the one-chip microcomputer 66 in advance. Further, the 1-chip microcomputer 66, and out an instruction for controlling the LED (L ight E mitting D iode ) to the digital output circuit 72, or performs control according to an instruction from the digital output circuit 72.

  The LAN communication circuit 70 is, for example, 100BASE-T or 100BAE-TX, and transmits tag information to the host 18 via the LAN 74. The digital input / output circuit 72 outputs data input from a contact or the like to the one-chip microcomputer 66. The digital input / output circuit 72 controls the LEDs and the like according to instructions from the one-chip microcomputer 66. When the communication circuit 76 acquires each control command as a response signal from the one-chip microcomputer 66, the communication circuit 76 transmits each control command to the transmitter 12.

  The host 18 is composed of, for example, a personal computer and determines the position of a person or an object holding the wireless tag 14 based on the tag information to which the installation position information of the receiver 16 is added. Information for controlling the wireless tag 14 and the receiver 16 is generated. For example, the host 18 can set which control command is issued to the receiver 16 when a request signal is acquired. The receiver 16 may be configured to add information such as time information to the tag information in addition to the installation position information. The host 18 may perform time management based on the time when the tag information is received based on the time of the clock function that the host 18 has.

  Next, an embodiment in which the information processing system 10 is used as a wireless tag management system that performs dynamic management will be described. Hereinafter, an operation when performing work management of an operator using the information processing system 10 will be described with reference to FIG.

  FIG. 6 is a diagram illustrating an example of a wireless tag management system according to an embodiment of the present invention. In the embodiment shown in FIG. 6, the transmitter 12A is arranged outside the entrance 202 of the building 200 in the facility 100, and the transmitter 12B is arranged inside, and further, the transmitter 12C and the transmitter 12D are installed in the building 200. The case where each is arranged will be described. One or more receivers 16 are arranged in the facility 100 (and the building 200). Further, the receivers 16A in the building 200 may be arranged corresponding to the transmitters 12, respectively. The transmitters 12 </ b> A to 12 </ b> D are configured with the same function as the transmitter 12. Here, as will be described later, in the present system, it is not necessary to install the transmitter 12 in an area A1 in the facility 100 and other than the area A2 in the building 200.

(When entering area A1 from area A2)
First, the worker holding the wireless tag 14 is working in the area A2 in the building 200. A case will be described below where the operator's wireless tag 14 starts work at a position closer to the installation position of the transmitter 12C (than the installation positions of the transmitters 12A, B, D). First, the wireless tag 14 of the worker receives an activation signal including the area ID 01 of the transmitter 12C from the transmitter 12C, and uses a tag ID for identifying the own device (wireless tag 14) and the area ID 01 as a request signal. The tag information including is transmitted to the receiver 16A.

  Next, when receiving the request signal, the receiver 16A adds installation position information indicating the installation position of the receiver 16A to the received tag information and transfers the request information to the host 18. When receiving the tag information, the receiver 16A may further add time information to the received tag information and transfer the tag information to the host 18.

  Thereby, the host 18 can detect that the worker holding the wireless tag 14 has approached the installation position of the transmitter 12C in the building 200 or that the worker is in the vicinity of the installation position. In addition, transmitter 12A thru | or D may be comprised so that it may be always a transmission state. On the other hand, since the host 18 associates the tag ID with the transmitters 12A to 12D in the building 200, the tag 18 can grasp which worker goes to which position in the area A2 by the tag ID. The host 18 can issue a transmission instruction to the transmitter corresponding to the tag ID. Therefore, at least one of the transmitters 12A to 12D is in a stopped state, and may be configured to transmit according to the instruction. Note that the host 18 may be configured to instruct the transmitter 12C to stop calling when it is detected that the work by the worker has ended. Note that the wireless tag 14 may have already started operation (already activated) in the semi-active mode. If the wireless tag 14 has not been activated, the wireless tag 14 may be one of the transmitters 12A to 12D. The wireless tag 14 may be activated by an activation signal for activating the wireless tag 14 and operate in a semi-active mode.

  Next, when the worker holding the wireless tag 14 moves to the vicinity of the installation position of the transmitter 12D and starts work, the worker's wireless tag 14 is activated from the transmitter 12D to the area ID02 of the transmitter 12D. A signal is received, and tag information including area ID 02 and tag ID is transmitted as a request signal.

  Next, when receiving the tag information, the receiver 16A adds installation position information indicating the installation position of the receiver 16A to the received tag information and transfers the tag information to the host 18. When receiving the tag information, the receiver 16A may further add time information to the received tag information and transfer the tag information to the host 18.

  Thereby, the host 18 can detect that the worker holding the wireless tag 14 has approached the installation position of the transmitter 12D in the building 200 or that the worker is in the vicinity of the installation position.

  The host 18 may be configured to instruct the transmitter 12D to stop transmitting when it is detected that the work by the worker has been completed.

  Next, when the worker approaches the entrance / exit 202 of the building 200 from the vicinity of the installation position of the transmitter 12D as the work is completed, the wireless tag 14 of the worker is removed from the transmitter 12B installed near the entrance / exit 202. The activation signal including the area ID 03 of the transmitter 12B is received, and tag information including the tag ID for identifying the own device (wireless tag 14) and the area ID 03 is transmitted to the receiver 16A as a request signal.

  When receiving the tag information, the receiver 16A adds installation position information indicating the installation position of the receiver 16A to the received tag information and transfers the tag information to the host 18. When receiving the tag information, the receiver 16A may further add time information to the received tag information and transfer the tag information to the host 18.

  Thereby, the host 18 can detect that the worker holding the wireless tag 14 has approached the installation position of the transmitter 12B in the building 200 or that the worker is in the vicinity of the installation position. That is, the host 18 can detect that the worker holding the wireless tag 14 has approached the entrance / exit 202.

  Thereafter, when the worker goes out of the building 200 (area A1) from the doorway 202, the worker's wireless tag 14 includes the area ID 04 of the transmitter 12A from the transmitter 12A installed in the vicinity of the doorway 202. The activation signal is received, and tag information including a tag ID for identifying the device (wireless tag 14) and the area ID 04 is transmitted to the receiver 16A as a request signal.

  When receiving the tag information, the receiver 16A adds installation position information indicating the installation position of the receiver 16A to the received tag information and transfers the tag information to the host 18. When receiving the tag information, the receiver 16A may further add time information to the received tag information and transfer the tag information to the host 18.

Thereby, the host 18 can detect that the worker holding the wireless tag 14 has approached the installation position of the transmitter 12A in the building 200 and that the worker is in the vicinity of the installation position. That is, the host 18 can detect that the worker holding the wireless tag 14 has gone out of the building 200 from the entrance 202.
As described above, according to the number of installed transmitters (installation positions), it is possible to determine in detail in which position of the area A2 in the building 200 the worker holding the wireless tag 14 has exited from the area A2. The number of transmitters is not limited, and the more transmitters are installed in the building 200, the more precisely the position of the wireless tag 14 can be determined.

  When the host 18 detects that the worker holding the wireless tag 14 has gone out of the building 200 from the entrance 202, the wireless tag 14 receives a control command including each command from the transmitter 12A. The operation mode is controlled based on the operation mode control command for controlling the operation mode of the wireless tag 14 included in the control command. For example, when the operation mode of the wireless tag 14 is “semi-active mode” in the area A2, the wireless tag 14 is switched to “active mode”, and in the area A1, the wireless tag operates in “active mode”.

  Note that the wireless tag 14 may be configured to switch the operation mode when entering the area A1 from the area A2. For example, an operator holding the wireless tag 14 has entered the vicinity of the transmitter 12B installed near the entrance / exit 202 from the host 18 to the vicinity of the transmitter 12A installation location (being entered). ) That is, when it is detected that the wireless tag 14 located in the predetermined area associated with the transmitter 12B has entered (entered) the predetermined area associated with the transmitter 12A, The wireless tag 14 may be configured to control the operation mode based on the operation mode control command for controlling the operation mode of the wireless tag 14 included in the control command when receiving the control command including each command from the transmitter 12A. Good.

  Next, when the worker approaches the vicinity of the installation position of the receiver 16C in the area A1 from the entrance / exit 202 of the building 200, the wireless tag 14 of the worker transmits tag information including the tag ID. When tag information is received, time information is further added to the received tag information and transferred to the host 18.

  Thereby, the host 18 can detect that the worker holding the wireless tag 14 has entered the communicable area associated with the receiver 16C (is in the area).

  Next, when the vicinity of the installation position of the receiver 16D in the area A1 is approached from the vicinity of the installation position of the receiver 16C in the area A1, the wireless tag 14 of the worker transmits tag information including the tag ID. When the tag information is received, the 16D further adds time information to the received tag information and transfers the tag information to the host 18.

  Thereby, the host 18 can detect that the worker holding the wireless tag 14 has entered the communicable area associated with the receiver 16D (is in the area).

  Similarly, when approaching another receiver or entering a communicable area of another receiver, similarly, the host 18 can roughly determine the position of the wireless tag 14 in the area A1.

  As described above, according to the number of receivers installed (installation position), it is roughly determined which position (range) the operator holding the wireless tag 14 is in the area A1 in the facility 100 (area with the wireless tag) Can be determined). Note that the number of receivers is not limited, and as more receivers are installed in the area A1, the position of the wireless tag 14 can be determined in more detail. Further, in the area A1, the wireless tag 14 operates in the active mode. Therefore, if the receivers 16B to 16H are installed, the wireless tag 14 can communicate with the wireless tags 14 around the receivers 16B to 16H. Tag information and the like of the tag 14 can be collected, and the transmitter 12 is not necessary.

(When entering area A1 from area A1)
Next, when the worker approaches, for example, the vicinity of the installation position of the transmitter 12A from the vicinity of the installation position of the receiver 16C installed in the area A1, the operator's wireless tag 14 is transmitted from the transmitter 12A to the transmitter 12A. The activation signal including the area ID 04 is received, and the tag information including the tag ID for identifying the device (wireless tag 14) and the area ID 04 is transmitted to the receiver 16A as a request signal.

  When receiving the tag information, the receiver 16A further adds time information to the received tag information and transfers the tag information to the host 18.

  Thereby, the host 18 can detect that the worker holding the wireless tag 14 has approached the installation position of the transmitter 12A in the building 200 and that the worker is in the vicinity of the installation position.

  Next, when the worker approaches the transmitter 12B installed in the vicinity of the entrance / exit 202 from the vicinity of the installation position of the transmitter 12A installed in the vicinity of the entrance / exit 202, the worker's wireless tag 14 is moved from the transmitter 12B. The activation signal including the area ID 03 of the transmitter 12B is received, and tag information including the tag ID for identifying the own device (wireless tag 14) and the area ID 03 is transmitted to the receiver 16A as a request signal.

  When receiving the tag information, the receiver 16A adds installation position information indicating the installation position of the receiver 16A to the received tag information and transfers the tag information to the host 18. When receiving the tag information, the receiver 16A may further add time information to the received tag information and transfer the tag information to the host 18.

  Thereby, the host 18 can detect that the worker holding the wireless tag 14 has approached the installation position of the transmitter 12B in the building 200 or that the worker is in the vicinity of the installation position. That is, the host 18 can detect that the worker holding the wireless tag 14 has entered the building 200 from outside the area 200 (area A1) through the doorway 202 into the building 200 (area A2).

  When it is detected by the host 18 that an operator holding the wireless tag 14 has entered the area A2 from the area A1, the wireless tag 14 receives the control command including each command from the transmitter 12A. The operation mode is controlled based on an operation mode control command for controlling the operation mode of the wireless tag 14 included in the command. For example, when the operation mode of the wireless tag 14 is “active mode” in the area A1, the wireless tag 14 is switched to “semiactive mode”, and in the area A2, the wireless tag operates in “semiactive mode”.

  Note that the wireless tag 14 may be configured so that the operation mode is switched when entering (entering) the area A2 from the area A1. For example, the operator who holds the wireless tag 14 enters from the vicinity of the installation position of the transmitter 12A (area A1) installed near the entrance 202 to the vicinity of the installation position of the transmitter 12B (area A2) by the host 18. That is, that the wireless tag 14 located in the predetermined area associated with the transmitter 12A has entered (entered) the predetermined area associated with the transmitter 12B. When the wireless tag 14 receives the control command including each command from the transmitter 12A, the wireless tag 14 controls the operation mode of the wireless tag 14 included in the control command. May be configured to control the operation mode based on

According to the present embodiment, in the area A2, the wireless tag 14 operates in the semi-active mode, and the position of the wireless tag can be determined in more detail according to the number of installed transmitters (installed position). On the other hand, in the area A1, the wireless tag 14 operates in the active mode, and the position of the wireless tag is roughly determined according to the number of installed receivers (installed position) (that the wireless tag exists in the area where the wireless tag exists). Can be determined). Therefore, according to the present embodiment, the position of the wireless tag can be determined flexibly according to the area where the wireless tag exists.
Moreover, according to this embodiment, the entry / exit of the worker who uses the building 200, the number of persons, and work can be managed. Furthermore, tag information or the like may be sent after being encrypted. In this case, the wireless tag 14 is encrypted based on the data based on the output control command received from the transmitter 12, so that the wireless tag 14 is not always encrypted using the same key, and security can be improved.

<Modification>
In the present embodiment, various control commands can be applied in addition to the above-described examples. For example, each control command for controlling the wireless tag 14 is output from the wireless tag 14, a command for turning on or off the LED of the wireless tag 14, a command for setting each function of the wireless tag 14 to the power saving mode, or the like. A command for controlling data (for example, tag information), a command for outputting a tag ID from the wireless tag 14, and a command for adjusting the operation speed of the wireless tag 14.

  In the present embodiment, if the request signal is different for each wireless tag 14, different control can be performed for each wireless tag 14. Thereby, in this embodiment, it is also possible to select the wireless tag 14 and control only the selected wireless tag 14.

  In each embodiment, when a plurality of wireless tags 14 are used, the transmission timing of each wireless tag 14 can be set to a different timing according to the random number table. Thereby, it is possible to control each of the wireless tags 14.

  Furthermore, in the above-described embodiment, a CRC code may be added to the tag information, or the wireless tag 14 may have a case structure in which energization is started when the case is enclosed in order to prevent battery consumption in a stock state.

  In the above embodiment, the receiver 16 has a function of receiving a request signal and outputting each control command as a response signal, that is, a function of changing the signal. However, in the above-described embodiment, as another example, the transmitter 12 may have a function of receiving a request signal as a response signal from the receiver 16 and transmitting each control command. Therefore, the response signal may be either a request signal or each control command, or other signal / information.

10 Information Processing System 12 Transmitter 14 Wireless Tag 16 Receiver 18 Host

Claims (5)

A transmitter that transmits an area ID unique to the area within the area associated with the own device;
When receiving the area ID, the first tag information including the area ID and the tag ID is transmitted. When not receiving the area ID, the wireless tag transmitting the second tag information including the tag ID; ,
A receiver for transferring the first tag information or the second tag information;
A host that determines the position of the wireless tag based on the first tag information, or that determines that the wireless tag exists in a predetermined area based on the second tag information, and
When it is determined by the host that the wireless tag is present in the first area where the transmitter is installed, the wireless tag receives the area ID on the condition that the first tag is received. Operates in a first mode of transmitting information,
When it is determined by the host that the wireless tag exists in a second area where the transmitter is not installed, the wireless tag transmits the second tag information at an arbitrary timing. Work in mode,
Information processing system. When the receiver receives tag information from the wireless tag, the receiver transmits the tag information to which installation position information indicating the installation position of the own apparatus is further added,
The host determines the position of the wireless tag based on the tag information to which the installation position information is further added.
The information processing system according to claim 1 . The control command further includes a control condition command including a plurality of setting values,
The wireless tag includes the comparison result between the duration of the operation mode and the set time included in the control condition command, the number of times the wireless tag transmits the tag information in the operation mode, and the control condition command. Switching the operation mode based on at least one of the comparison results with the set number of times, or controlling the operation in the operation mode,
The information processing system according to claim 2 . The wireless tag is at least one of a case where the duration of the operation mode exceeds the set time, and a case where the number of times the wireless tag transmits the tag information in the operation mode exceeds the set number of times. To control the operation mode, or to control the operation in the operation mode,
The information processing system according to claim 1 or 2 . The wireless tag is at least one of a case where the duration of the operation mode exceeds the set time, and a case where the number of times the tag transmits the tag information in the operation mode exceeds the set number of times. Adding additional information to the tag information transmitted in the operation mode;
Claims 1 to 3 information processing system according.

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