JP2014011658A - Position information management system, communication apparatus, and position information management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a position information management system for suppressing power consumption.SOLUTION: A position information management system 1 includes a communication apparatus 100, a radio terminal 120 having identification information and a management server 160 for managing the position of the radio terminal. The radio terminal includes: position information reception means for receiving position information to be transmitted by the communication apparatus; and identification information transmission means for transmitting identification information to the communication apparatus together with the received position information. The communication apparatus includes: position information transmission means for transmitting position information; terminal information reception means for receiving the identification information and position information transmitted from the radio terminal; terminal information transmission means for transmitting the identification information and position information to the management server; regulation time measurement means for starting the measurement of regulation time with a predetermined opportunity as reference; and power consumption reduction means for stopping power supply to the position information transmission means when time for not receiving identification information and position information by the terminal information reception means becomes equal to or more than the regulation time.

Description

  The present invention relates to a location information management system, a communication device, and a location information management method.

  Various location information management systems have been proposed in order to grasp and manage the position of a wireless terminal or a person or an article having a wireless terminal in a facility where accurate positioning using GPS or the like is difficult.

  Patent Document 1 discloses a system that reads a passive RF tag attached to a person with a fixed RF reader / writer and notifies the position to another wireless terminal or the like.

  Patent Document 2 discloses a system in which a wireless terminal specifies its own position by replacing an identifier wirelessly transmitted from a nearby transmitter with position specifying information.

  Patent Document 3 discloses a system in which a wireless terminal receives specific information transmitted from a lighting device, and transmits the specific information to a server to identify the position of the wireless terminal.

  However, in the system of Patent Document 1, it is necessary to install a large number of RF readers / writers in order to read passive RF tags having a narrow communication range, which may increase the cost of introducing infrastructure.

  Further, in the system of Patent Document 2, the power consumption of the wireless terminal may increase depending on the communication method between the wireless terminal and the server.

  Further, in the system of Patent Document 3, as in Patent Document 2, power consumption of the wireless terminal is not taken into consideration. In addition, in the server, in order to specify the position of the wireless terminal, it is necessary to search for a position associated with the unique information, which may increase the calculation cost.

  By the way, although it is required to reduce power consumption in the management of position information, there is a problem that power consumption is not considered much in the conventional position information management system.

  The present invention has been made in view of such a problem, and an object thereof is to provide a position information management system that suppresses power consumption.

The present invention is a position information management system having a communication apparatus having position information of the communication apparatus, a wireless terminal having identification information and communicating with the communication apparatus, and a management server for managing the position of the wireless terminal. The wireless terminal receives the position information transmitted by the communication device, and transmits the identification information for transmitting the identification information of the wireless terminal to the communication device together with the received position information. Means,
The communication apparatus includes: position information transmitting means for transmitting the position information; terminal information receiving means for receiving the identification information and the position information transmitted from the wireless terminal that has received the position information of the communication apparatus; Terminal information transmitting means for transmitting the identification information and the position information to the management server, specified time measuring means for starting measuring a specified time based on a predetermined trigger (for example, the timer 218 corresponds), When the time during which the terminal information receiving means does not receive the identification information and the position information is equal to or longer than the specified time, the power consumption reducing means (for example, the energy saving control unit 222) stops power supply to the position information transmitting means. Is equivalent to
The management server includes receiving means for receiving the identification information and the position information from the communication device, and management means for managing the position of the wireless terminal based on the identification information and the position information. And

  ADVANTAGE OF THE INVENTION According to this invention, the positional information management system which suppressed power consumption can be provided.

The figure showing the positional infomation management system in one Embodiment of this invention. The figure showing the network which comprises the positional infomation management system in one Embodiment of this invention. The hardware block diagram of the communication apparatus in one Embodiment of this invention. The hardware block diagram of the radio | wireless terminal in one Embodiment of this invention. The hardware block diagram of the management apparatus in one Embodiment of this invention. The hardware block diagram of the management server in one Embodiment of this invention. The functional block diagram of the communication apparatus in one Embodiment of this invention. The functional block diagram of the radio | wireless terminal in one Embodiment of this invention. The functional block diagram of the management apparatus in one Embodiment of this invention. The functional block diagram of the management server in one Embodiment of this invention. The figure showing the example of the information which the communication apparatus in one Embodiment of this invention hold | maintains. The figure showing the example of the information which the radio | wireless terminal in one Embodiment of this invention hold | maintains. The figure showing the example of the format of the positional information which the radio | wireless terminal in one Embodiment of this invention transmits. The figure showing the example of the information which the management server in one Embodiment of this invention hold | maintains. The figure showing the operation | movement sequence of the positional infomation management system in one Embodiment of this invention. The figure showing the example of the search screen of the management server in one Embodiment of this invention. The figure showing the example of the search result screen of the management server in one Embodiment of this invention. It is a figure which shows typically the transmission range of the positional information of a positional information management system. It is a figure which shows typically the transmission range of the positional information of a positional information management system. It is a figure which shows typically the transmission range of the positional information of a positional information management system. It is a figure which shows an example of a person's movement path | route. It is a figure which shows an example of the communication range which should operate | move. It is an example of the figure explaining transmission control of the positional information by a communication apparatus. It is an example of the figure explaining the relationship between the movement path | route of the person who carried the wireless terminal, and the operation mode of a communication apparatus. It is an example of the figure explaining the relationship between the movement path | route of the person who carried the wireless terminal, and the operation mode of a communication apparatus. It is an example of the figure which shows progress when the person who carried the radio | wireless terminal moved to the B point which is the last point of a movement route. It is an example of the figure which shows the operation mode of a communication apparatus when a radio | wireless terminal finally arrives at the B point of the terminal point of a movement route. It is an example of the flowchart figure which shows the process sequence of the communication apparatus of this embodiment. It is an example of the figure explaining the power consumption of the communication apparatus of the modification 1. FIG. It is an example of the flowchart figure which shows the process sequence of the communication apparatus of the modification 1. It is an example of the figure which illustrates typically the communication apparatus which does not transfer to energy saving mode (modification 2).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The figure number and the contents of the figure correspond as follows.

1. System 2. 2. Hardware configuration example Function 4. Operation sequence (1. System)
FIG. 1A shows a location information management system 1 according to an embodiment of the present invention. 1A includes communication apparatuses 100, 102, 104, and 106, wireless terminals 120, 122, and 124, a management apparatus 140, a management server 160, and a network 180 and a network 190 that include the communication apparatus, the wireless terminal, and the management apparatus. . Here, the network 180 is a wireless network managed by the management device 140. FIG. 1B shows the communication devices 100, 102, 104, and 106, the wireless terminals 120, 122, and 124, and the management device 140 that constitute the wireless network in FIG. 1A.

  The communication devices 100, 102, 104, and 106 are fixed to, for example, a ceiling of a room, and position information (hereinafter referred to as “position information”) such as history information, the number of floors of a building, and a building number related to the fixed position. This is transmitted wirelessly continuously or intermittently. Each communication device has an independent casing and operates by being supplied with power from a previously installed power source, or is incorporated in a lighting fixture such as an LED fluorescent tube and operates with power supplied from the lighting fixture. Each of the communication devices 100, 102, 104, and 106 transmits position information held by each of the communication devices 100, 102, 104, and 106 to a predetermined range using a radio signal. The predetermined range is determined by the signal strength of the radio signal used. The communication device is arranged so as to cover an area that is a position management target, and is configured so that the respective areas do not overlap. Or even if it is a case where it overlaps, in the side which receives a positional information, it is comprised so that any one communication apparatus can be determined based on the intensity | strength of a received radio wave. In the example of FIG. 1A, a conical dotted line shown below each communication device represents a predetermined range. As a communication method for transmitting position information, for example, a ground complementary signal (Indoor Messaging System; IMES) can be used.

  The wireless terminals 120, 122, and 124 can receive wireless signals transmitted by the nearest communication device among the communication devices 100, 102, 104, and 106. In the example of FIG. 1A, each wireless terminal is attached to a rectangular parallelepiped managed object that is a target whose position is to be managed. The wireless terminals 120, 122, and 124 are terminals that can transmit radio waves themselves, such as active tags. Hereinafter, the wireless terminal 120 will be described.

  The wireless terminal 120 is within a range in which a wireless signal from the communication device 100 can be received, and receives position information of the communication device 100. The position information of the communication device 100 is received using, for example, IMES. The wireless terminal 120 transmits information including its own identification information such as a network address to the communication apparatus 100 together with the received position information. The transmission is performed through a network 180 by short-range wireless communication such as IEEE802.15.4 and ZigBee (registered trademark). In this case, IEEE802.15.4 abbreviated address or IEEE extended (MAC) address can be used as identification information of the wireless terminal 120. The identification information and position information transmitted to the communication device 100 are then transmitted to the management device 140 via the adjacent communication device 102. The transmission / reception operation in the wireless terminal 120 is performed at a timing determined in advance in the wireless terminal 120 or at a timing when a change in acceleration by the acceleration sensor included in the wireless terminal 120 is detected.

  The management device 140 connects the network 180 and the network 190 to each other, and bridges data transmitted from the network 180 side to the network 190. The management device 140 is installed, for example, for each floor of a building or for each room partitioned by walls. When the network 180 is a PAN (Personal Area Network) based on IEEE802.15.4 and ZigBee (registered trademark) and the network 190 is a LAN based on the IEEE802.3 standard, the communication system is converted between them. If the identification information of the wireless terminal 120 is represented by an IEEE 802.15.4 abbreviated address, it is converted into an IEEE extended address based on the information at the time of PAN configuration and transmitted to the management server 160.

  The management server 160 records the identification information and position information received via the management apparatus 140 together with the reception date and time, and manages the position of the communication apparatus. In the management server 160, management objects related to wireless terminals are recorded in advance. Therefore, the location of the management target can be searched using these pieces of information.

  The network 180 connects the respective communication devices 100, 102, 104, 106, the wireless terminals 120, 122, 124, and the management device 140, for example, a PAN configured by IEEE802.15.4 and ZigBee (registered trademark) standards. It is. When the PAN is configured with IEEE802.15.4 and ZigBee (registered trademark) standards, the wireless terminal, the communication device, and the management device each have an end device function, a router function, and a coordinator function defined by the ZigBee (registered trademark) standard. . Each communication device and wireless terminal enters the management of the management device at the time of activation, forms a PAN, and determines the minimum path to the management device.

  The network 190 is a network that connects the management apparatus 140 and the management server 160, and is, for example, a LAN defined by the IEEE 802.3 standard.

  As described above, in the location information management system 1 according to the embodiment of the present invention, the wireless terminal can transmit the identification information and the location information to the management server using power that can be communicated with the nearest communication device. it can. In addition, it is not necessary to install a new infrastructure for installing the communication device, and the introduction cost can be reduced.

  Note that the location information of the communication device may be provided through the network 180. This eliminates the need for transmission means for transmitting position information such as IMES.

  Further, the wireless terminal may transmit the identification information and the position information to the management apparatus 140 when the management apparatus is present in the vicinity of the communication apparatus that transmitted the position information. Thereby, identification information and position information can be transmitted to the management server by the shortest path.

  Further, the management server function may be integrated into the management server. This eliminates the need for a separate management device.

  The wireless terminal may be a wireless terminal having a function equivalent to an active tag, such as a smartphone, PDA, PC, or smart meter. As a result, it is possible to manage the position information of the existing wireless terminal without attaching a tag.

  Further, in addition to the above-described position information, information for specifying a finer position, such as information representing a section in the room, may be included. As a result, finer location management is possible.

  The location management target may be a person. Thereby, the location of a person can be managed by the system 1.

  The network 180 may be configured using short-range wireless communication such as Bluetooth LE, ANT, Z-Wave, and the like. This makes it possible to manage position information of various wireless terminals.

The network 190 may include a plurality of types of networks such as the Internet. This makes it possible to manage the location information of the wireless terminal regardless of the physical location between the network 180 and the management server 160.
(2. Hardware configuration example)
Next, the hardware configuration of the communication device 100, the wireless terminal 120, the management device 140, and the management server 160 included in the location information management system 1 will be described with reference to FIGS. 2A, 2B, 2C, and 2D.

  FIG. 2A shows a hardware configuration of the communication apparatus 100 according to an embodiment of the present invention. The communication device 100 includes a CPU 200, a RAM 202, a ROM 204, a position signal transmission control unit 206, a position signal transmitter 208, a wireless communication control unit 210, a wireless communication unit 212, a bus 214, a timer 216, a power control unit 218, and a power conversion unit 220. , An energy saving control unit 222, an activation signal transmission unit 224, an activation signal reception unit 226, and an acceleration sensor unit 228.

  The CPU 200 executes a program that controls the operation of the communication device 100. The RAM 202 constitutes a work area of the CPU 200 and the like. The ROM 204 stores position information of the communication device 100 in addition to the program executed by the CPU 200. The position signal transmission control unit 206 executes processing for transmitting a positioning signal representing the position information of the communication apparatus 100 via the position signal transmitter 208. The position signal transmitter 208 is a device including an antenna that transmits a positioning signal such as IMES. The wireless communication control unit 210 performs wireless communication processing via the wireless communication unit 212. The wireless communication unit 212 is a device that includes an antenna capable of transmitting and receiving radio waves conforming to the IEEE802.15.4 standard, for example. A bus 214 electrically connects the above devices.

  With the above configuration, the communication apparatus 100 according to an embodiment of the present invention transmits position information to the wireless terminal 120, receives identification information and position information from the wireless terminal 120, and transmits these information via the management apparatus. Can be sent to the management server.

  As described above, when the position information is transmitted by wireless communication, the position signal transmission control unit 206 and the position signal transmitter 208 are not necessary.

  The timer 216 measures time based on an arbitrary reference, and outputs a notification signal indicating that the specified time has elapsed to the energy saving control unit 222 after a preset specified time.

  The power conversion unit 220 converts one or more of voltage, AC / DC, or frequency. For example, an AC adapter, a DCDC converter, etc.

  The power from the power conversion unit 220 is supplied to the power control unit 218, the energy saving control unit 222, the timer 216, the activation signal transmission unit 224, the activation signal reception unit 226, and the acceleration sensor unit 228. The power from the power conversion unit 220 is always provided while the main power supply 230 is ON.

  The power supply control unit 218 has an ON state and an OFF state. In the ON state, power is supplied to each functional block of the CPU 200, RAM 202, ROM 204, position signal transmission control unit 206, wireless communication control unit 210, position signal transmitter 208, and wireless communication unit 212. In the OFF state, power is not supplied to the functional blocks of the CPU 200, RAM 202, ROM 204, position signal transmission control unit 206, wireless communication control unit 210, position signal transmitter 208, and wireless communication unit 212.

  The state in which the power supply control unit 218 is in the ON state is the standard operation mode of the communication device 100, and the OFF state is the energy saving mode in the communication device 100.

  The energy saving control unit 222 determines whether the power supply control unit 218 is in an ON state or an OFF state, and switches between the ON state and the OFF state based on the determination result. When the activation signal receiving unit 226 receives the activation trigger signal, the energy saving control unit 222 turns on the power supply control unit 218, and when the timer 216 outputs a notification signal indicating that the specified time has elapsed, the energy saving control unit 222 performs power supply control. The part 218 is turned OFF.

  The activation signal transmission unit 224 transmits an activation trigger signal for returning the energy saving mode to the standard operation mode to nearby communication devices. The activation signal transmission unit 224 transmits an activation trigger signal only when there is a response from the wireless terminal even in the standard operation mode.

  When the communication device is in the energy saving mode, the activation signal receiving unit 226 receives an activation signal from a nearby communication device.

  The acceleration sensor unit 228 detects the acceleration of the wireless terminal. For example, the acceleration sensor unit 228 may detect that the acceleration has occurred by directly receiving the acceleration from the wireless terminal, or may detect that the acceleration has occurred from a change in radio wave or position.

  FIG. 2B shows a hardware configuration of the wireless terminal 120 according to an embodiment of the present invention. The communication terminal 120 includes a CPU 220, a RAM 222, a ROM 224, a position signal reception control unit 226, a position signal receiver 228, a wireless communication control unit 230, a wireless communication unit 232, an acceleration detection control unit 234, an acceleration detector 236, and a bus 238. .

  The CPU 220 executes a program that controls the operation of the wireless terminal 120. The RAM 222 constitutes a work area of the CPU 220 and the like. The ROM 224 stores identification information of the wireless terminal 120 and position information received from the communication device in addition to the program executed by the CPU 220. The position signal reception control unit 226 performs processing for receiving a positioning signal representing position information via the position signal receiver 228. The position signal receiver 228 is a device including an antenna that receives a positioning signal such as IMES. The wireless communication control unit 230 executes wireless communication processing via the wireless communication unit 232. The wireless communication unit 232 is a device that includes an antenna capable of transmitting and receiving radio waves conforming to, for example, IEEE 802.15.4 standard. The acceleration detection control unit 234 detects a change in acceleration via the acceleration detector 236. The acceleration detector 236 is, for example, an acceleration sensor or a motion sensor using inertial force or magnetism. A bus 238 electrically connects the above devices.

  With the above configuration, the wireless terminal 120 according to an embodiment of the present invention can receive location information from the communication device 100 and transmit its own identification information to the communication device 100 together with the location information. In particular, identification information and position information can be efficiently transmitted by performing a transmission or reception operation at a timing when the wireless terminal is moved.

  In addition, when the wireless terminal 120 is an information terminal such as a smartphone or a PC, the wireless terminal 120 includes an input device such as a touch panel, a dial key, a keyboard, and a mouse and a corresponding input control unit that accepts input from the user. Also good. Furthermore, a display device such as a screen and a corresponding display control unit may be provided.

  In addition, when the wireless terminal 120 includes a GPS antenna and a corresponding control unit, it is possible to receive a positioning signal by IMES using the antenna, and it is possible to correspond to the position information management system 1 only by software modification.

  Moreover, the acceleration detection control part 234 and the acceleration detector 236 are arbitrary components. When the acceleration detection control unit 234 and the acceleration detector 236 are not provided, the transmission or reception operation of the wireless terminal 120 is performed at a predetermined interval or time.

  Further, as described above, when the position information is received by wireless communication, the position signal reception control unit 226 and the position signal receiver 228 are not necessary.

  FIG. 2C shows the hardware configuration of the management apparatus 140 according to an embodiment of the present invention. The management device 140 includes a CPU 240, a RAM 242, a ROM 244, a wireless communication control unit 246, a wireless communication unit 248, a wired communication control unit 250, a wired communication unit 252, and a bus 254.

  The CPU 240 executes a program that controls the operation of the management apparatus 140. The RAM 242 constitutes a work area of the CPU 240 and the like. The ROM 244 stores programs executed by the CPU 240 and data used by the programs. The wireless communication control unit 246 executes wireless communication processing via the wireless communication unit 248. The wireless communication unit 248 is a device including an antenna that can transmit and receive radio waves conforming to, for example, the IEEE 802.15.4 standard. The wired communication control unit 250 executes wired communication processing via the wired communication unit 252. The wired communication unit 252 is a device having a network interface that conforms to, for example, the IEEE 802.3 standard. A bus 254 electrically connects the above devices.

  With the above configuration, the management apparatus 140 according to an embodiment of the present invention can convert a signal from the network 180 including the communication apparatus 100 and the wireless terminal 120 into a network 190 including the management server 160. When the network 180 configuring the PAN is ZigBee (registered trademark), it can have a coordinator function for managing devices participating in the PAN.

  FIG. 2D shows the hardware configuration of the management server 160 in one embodiment of the present invention. The management server 160 includes a CPU 260, a RAM 262, a ROM 264, an HDD 266, a communication control unit 268, a communication unit 270, a display control unit 272, a display unit 274, an input control unit 276, an input unit 278, and a bus 280.

  The CPU 260 executes a program that controls the operation of the management server 160. The RAM 262 constitutes a work area for the CPU 260 and the like. The ROM 264 stores a program executed by the CPU 260 and data used by the program. The HDD 266 stores information for managing the position of the wireless terminal 120 used in the position information management system 1. The communication control unit 268 executes communication processing via the communication unit 270. The communication unit 270 is a device having a network interface that conforms to, for example, the IEEE 802.3 standard. The display control unit 272 controls the content displayed on the display unit 274 in accordance with the processing content of the location management program executed on the management server 160. The display unit 274 includes a display such as a liquid crystal display or a CRT display. The input control unit 276 processes a signal from the input unit 278 such as a keyboard and a mouse that receives an input from the user. A bus 280 electrically connects the above devices.

  With the above configuration, the management server 160 in one embodiment of the present invention can manage the location of the wireless terminal 120 and search for the location of the wireless terminal 120.

  The HDD 266 may be any storage device including a tape drive, or may be a storage area accessible via a network.

The management server 160 may include a wireless communication control unit and a wireless communication unit included in the management device 140 described above, and may perform the processing instead of the management device 140. Thereby, it is not necessary to provide the management device 140 separately.
(3. Function)
FIG. 3A shows a functional block diagram of the communication apparatus 100 according to an embodiment of the present invention. The communication apparatus 100 according to an embodiment of the present invention includes a storage unit 300, a communication unit 304, and a control unit 312.

  The storage unit 300 stores the position information 302 of the communication device 100. An example of a table for storing the position information 302 is shown in FIG. FIG. 4 includes items of floor number, latitude, longitude, and building number. The floor number represents the floor number of the building where the communication device 100 is installed. The latitude and longitude represent the latitude and longitude of the position where the communication device 100 is located. The building number represents the building number of the building where the communication device 100 is installed. In the example of FIG. 4, the communication device 100 is located on the 16th floor of a building C of a certain building, and is located at a point where the latitude is 35.459555 and the longitude is 139.3387110.

  The communication unit 304 includes a position information transmission unit 306, a terminal information reception unit 308, and a terminal information transmission unit 310.

  The position information transmitting unit 306 wirelessly transmits the position information 302 including information such as the history information, the number of floors of the building, and the building number continuously or intermittently to the wireless terminal 120 within a predetermined range. The position information 302 is transmitted using, for example, a format defined in IMES.

  The terminal information receiving unit 308 receives identification information and position information transmitted from the wireless terminal 120.

  The terminal information transmission unit 310 transmits the identification information and position information transmitted from the wireless terminal 120 to the management server 160 via the management device 140. When the network 180 is made using the ZigBee (registered trademark) standard, the transmission is performed using routing information held by the communication apparatus 100.

  The control unit 312 controls the operation of the communication device 100. When the communication apparatus 100 configures a PAN using the wireless terminal 120 and the management apparatus 140 and ZigBee (registered trademark), the communication apparatus 100 is controlled to provide a router function.

  With the above configuration, the communication apparatus 100 according to an embodiment of the present invention holds the position information 302, transmits the position information 302 to the wireless terminal 120, receives the identification information and the position information of the wireless terminal 120, and The identification information can be transmitted to the management server through the management device 140.

  Note that the position information 302 may include additional information such as the name of the building where the communication apparatus 100 is installed and information indicating a section in the room. As a result, finer location management is possible.

  FIG. 3B shows a functional block diagram of the wireless terminal 120 in an embodiment of the present invention. The wireless terminal 120 according to an embodiment of the present invention includes a storage unit 320, a communication unit 326, an acceleration detection unit 332, and a control unit 334.

  The storage unit 320 includes identification information 322 and position information 324. The identification information 322 includes information such as the network address of the wireless terminal 120 that can identify the wireless terminal 120 on the location information management system 1. For example, when the network 180 is based on the IEEE 802.15.4 and ZigBee (registered trademark) standards, an IEEE 802.15.4 abbreviated address or an IEEE extended (MAC) address can be used. The position information 324 is the position information 302 transmitted from the communication apparatus 100. An example of a table for storing the position information 324 is shown in FIG. The configuration is the same as in FIG.

  The communication unit 326 includes a position information receiving unit 328 and an identification information transmitting unit 330.

  The position information receiving unit 328 receives the position information 302 transmitted from the communication device 100. The received position information 302 is held in the storage unit 320 of the wireless terminal 120.

  The identification information transmitting unit 330 transmits the position information 324 together with the identification information 322 of the wireless terminal 120 to the communication device 100. The position information 322 is transmitted to the wireless terminal 120 in a format as shown in FIG. 6, for example. In the format of FIG. 5, the floor, latitude, longitude, and building number fields are represented by 9 bits, 21 bits, 21 bits, and 8 bits, respectively, and the corresponding fields of the message received according to the IMES standard are connected. . The representation format of each field conforms to the IMES standard. Actually, in addition to this format, a header and checksum information defined by the communication method are added and transmitted. As a communication method, for example, IEEE802.15.4 and ZigBee (registered trademark) standards are used.

  The acceleration detection unit 332 detects a change in acceleration of the wireless terminal 120. The change in acceleration is detected, for example, when the wireless terminal 120 starts moving, when the movement stops, or when a tilt is detected. The detected change in acceleration is used to determine the timing of the transmission or reception operation of the wireless terminal 120. The acceleration detection means 332 is an arbitrary component.

  The control unit 334 controls the reception timing of the position information by the position information reception unit 238 and the transmission timing of the identification information 322 and the position information 324 by the identification information transmission unit 330. The transmission / reception timing is determined based on the detection of a change in acceleration by the acceleration detection means 332. Alternatively, it may be determined based on an interval or time preset in the wireless terminal 120. Also, transmission and reception timings may be determined independently of each other. Further, when the wireless terminal 120 forms a PAN with ZigBee (registered trademark) together with the communication device 100 and the management device 140, the control unit 334 controls the wireless terminal 120 to provide an endpoint function.

  With the above configuration, the wireless terminal 120 according to an embodiment of the present invention can efficiently receive position information from the communication apparatus 100 and efficiently transmit identification information together with the position information to the communication apparatus 100.

  When the wireless terminal 120 is an information terminal such as a smartphone or a PC, an input unit that receives an input from the user or a display unit that presents information to the user may be provided. As a result, it is possible to present identification information or position information to the user and to input or modify identification information or position information from the user.

  FIG. 3C is a functional block diagram of the management apparatus 140 according to an embodiment of the present invention. The management apparatus 140 according to an embodiment of the present invention includes a communication unit 340, a conversion unit 346, and a control unit 348.

  The communication unit 340 includes a reception unit 342 and a transmission unit 344. The receiving unit 342 receives data transmitted from the communication device 100 or the wireless terminal belonging to the network 180. The transmission unit 344 transmits the data converted by the management apparatus 140 to the management server 160 belonging to the network 190. The network 180 is a PAN based on IEEE802.15.4 and ZigBee (registered trademark) standards, for example. The network 190 is a LAN based on the IEEE802.3 standard, for example.

  The converting unit 346 converts the data received by the receiving unit 342 from the network 180 into a format compatible with the network 190. The converted data is transmitted to the management server 160 via the network 190 by the transmission unit 344. Here, when the identification information of the wireless terminal 120 included in the data is represented by an IEEE 802.15.4 abbreviated address, it is converted into an IEEE extended address based on the information at the time of PAN configuration.

  The control unit 348 controls the operation of the management device 140. When the management device 140 configures a PAN according to the ZigBee (registered trademark) standard together with the communication device 100 and the wireless terminal 120, the management device 140 is controlled to provide a coordinator function.

  With the above configuration, the management apparatus 140 according to an embodiment of the present invention can bridge communication between the network 180 to which the communication apparatus 100 and the wireless terminal 120 belong and the network 190 to which the management server belongs.

  FIG. 3D shows a functional block diagram of the management server 160 in one embodiment of the present invention. The management server 160 according to an embodiment of the present invention includes a communication unit 360, a storage unit 366, an input unit 370, a display unit 372, and a control unit 374.

  The communication unit 360 includes a reception unit 362 and a transmission unit 364. The receiving unit 362 receives the identification information and the position information transmitted from the wireless terminal through the management device 140. The received identification information and position information are stored in the storage means 366. When the transmission unit 364 is requested to provide location information to an external server or the like, the transmission unit 364 transmits the location information to the external server or the like.

  The storage unit 366 has location management information 368. The location management information 368 is information obtained by adding management information such as a reception time to the identification information and location information received from the wireless terminal 120. An example of a table storing the information is shown in FIG. FIG. 7 includes items of identification information, device name, owned department, latitude, longitude, floor number, building, and reception date and time. The identification information is information such as an IEEE extended address of the wireless terminal 120 that has transmitted the identification information. The latitude, longitude, number of floors, and building correspond to the positional information received together with the identification information. The reception date and time is the date and time when the management server 160 received the information. The device name is the name of the management target to which the wireless terminal 120 that transmitted the information is attached or the device name of the wireless terminal 120. The owned department is a department name that owns the wireless terminal 120 that has transmitted the information. Information on the device name and the owned department is associated with identification information by the management server 160 in advance.

  The input unit 370 accepts an input from the user so that the user searches for position information.

  The display unit 372 displays on the screen a GUI related to a search screen for the user to search for position information. An example of the search screen is shown in FIG. 9A. In the “location search system” shown in FIG. 9A, based on the information stored in the storage unit 366, the department and device name related to the wireless terminal are displayed in a list on the screen. When the user selects a check box of a device to be searched through the input unit 370, a check mark is added. When all the devices to be searched are checked and the “Execute Search” button is selected, the search is executed and the screen is switched to a result display screen. In the example of FIG. 9A, an example is shown in which the user performs a search for a device called “UCS P3000” owned by “Sales Section 1”. FIG. 9B is an example of the search result screen. When the “execute search” button is selected, the display unit 372 displays a floor plan of “A building 4th floor” where “UCS P3000” is located based on the data stored in the storage unit 366, the device name, Displays the reception date and time.

  The control unit 374 controls the operation of the management server.

  With the above configuration, the management server 160 according to an embodiment of the present invention can manage the location of the wireless terminal and search for the location. In particular, information representing the position of the wireless terminal itself can be directly received and managed, and the amount of calculation for searching for the position can be reduced.

  The management server 160 has the same functions as the conversion unit 346, the control unit 348, and the reception unit 342 included in the management device 160, and may have the same functions as the management device 160. This eliminates the need to provide the management device 160 individually.

  In addition, the location management information 368 stored by the management server 160 is the date and time when the wireless terminal transmitted the information together with the information shown in FIG. Information including time taken until arrival of information or electric field strength may be stored. Thereby, position information can be managed under more detailed conditions.

  In addition, the management server 160 may record past location information of the wireless terminal. Thereby, the movement of the wireless terminal can be tracked.

(4. Operation sequence)
FIG. 8 is a diagram showing an operation sequence of the location information management system 1 in the embodiment of the present invention in the configuration of FIG. In FIG. 8, when a change in acceleration is detected, the communication apparatus 100 that receives position information and transmits identification information, the wireless terminal 120 that transmits position information to a region to which the communication apparatus 100 belongs, PAN (IEEE802.15.4 and An example of a management apparatus 140 that bridges ZigBee (registered trademark) and a LAN (IEEE802.3) and a management server 160 will be described. It is assumed that the PAN among the communication device 100, the wireless terminal 120, and the management device 140 has already been established.

  In step S800, the communication apparatus 100 transmits the position information continuously or intermittently using IMES or the like.

  In step S802, the wireless terminal 120 detects a change in acceleration.

  In step S804, the wireless terminal 120 receives the position information transmitted from the communication device 100.

  In step S806, the wireless terminal 120 stores the received position information.

  In step S808, the wireless terminal 120 transmits identification information and position information to the communication apparatus 100.

  In step S810, the communication apparatus 100 transmits the identification information and the position information received from the wireless terminal 120 to the management apparatus through the minimum path.

  In step S812, the management apparatus 140 converts the data transmitted from the network 180 including the identification information and the position information received from the communication apparatus 100 into a format compatible with the network 190.

  In step S <b> 814, the management apparatus 140 transmits the identification information and position information converted into a format compatible with the network 190 to the management server 160.

  In step S816, the management server 160 registers the identification information and the position information received from the management device together with information on the wireless terminal corresponding to the identification information.

  Through the above procedure, the position information management system 1 according to the embodiment of the present invention allows the wireless terminal to efficiently transmit the identification information and the position information to the nearest communication device 100, so that the power consumption of the wireless terminal Can be suppressed.

  As described above, the management server 160 may execute the functions of the management apparatus 140 in an integrated manner. In this case, it is not necessary to install a separate management device 140.

  If the wireless terminal does not include the acceleration detection unit 332, step S802 is not executed, and the reception of the position information in step S804 can be performed at a predetermined time or at a predetermined interval. The subsequent processing is the same as steps S806 to S816.

(Control to reduce power consumption of communication devices)
When many communication devices are efficiently placed on the indoor ceiling so that the location information can be transmitted to the indoor floor, if the communication device transmits the location information continuously or intermittently, power is wasted. May consume. For example, when there is no wireless terminal in a predetermined range in which the communication device transmits position information, unnecessary transmission is performed because unnecessary transmission is performed.

  Therefore, in the following, a position information management system 1 that can manage position information by efficiently operating a communication apparatus, omitting unnecessary transmission processing, will be described.

  10A to 10C are diagrams schematically illustrating a transmission range of position information of the position information management system 1 described so far. The communication devices are arranged, for example, at equal intervals in the width direction and the depth direction of the ceiling, and position information is transmitted from each communication device toward the lower floor. When the wireless terminal carried by the person receives the position information, the wireless terminal identification information and the received position information are transmitted to the communication device (hereinafter simply referred to as a wireless terminal responding).

  As shown in FIG. 10C, when the position information management system 1 of the present embodiment is applied to a relatively large indoor floor, a number of communication devices corresponding to the transmission range of the position information and the floor size are required. . In FIG. 10, the range surrounded by a circle is the transmission range of position information, so there are as many communication devices as there are circles.

  For example, when there are few people carrying the wireless terminals present on this floor, if all the communication devices transmit the position information toward the floor, most of the transmission is wasted. FIG. 10B shows a case where there is only one person carrying a wireless terminal on the floor, but transmission of a communication device corresponding to a circle with no people is useless.

  When the person carrying the wireless terminal is within the black circle in FIG. 10C, only one communication device can detect the position of the wireless terminal. That is, transmission of position information from other communication devices can be said to be a wasteful operation while the wireless terminal is in this position. In the present embodiment, when there is no person (wireless terminal), the communication device does not transmit the position information, thereby reducing power consumption.

  FIG. 11A shows an example of a movement path of a person. Usually, a person moves, and a wireless terminal carried by the person moves accordingly. It is assumed that a person has moved from the point A to the point B along the route indicated by the arrow.

The communication device to be operated by this movement is a communication device corresponding to a transmission range overlapping with a route through which a person has passed.
FIG. 11B is a diagram illustrating an example of a communication device to be operated. In FIG. 11B, the communication range to be operated is indicated by a black circle. That is, the communication device that transmits the position information may be only the communication device that transmits the position information in the transmission range indicated by the black circle. Further, even if the communication terminal is within the transmission range indicated by the black circle in FIG. 11B, it is not necessary to transmit the position information after the wireless terminal has passed.

FIG. 12 is an example of a diagram illustrating transmission control of position information by the communication apparatus according to the present embodiment. In FIG. 12, the communication device and the circle of the transmission range are shown on the same plane. There is a communication device at the center of each circle. Of the seven circles, a black circle is shown because there is a person carrying the wireless terminal in the middle circle. In the following, as described below, the filled state of the circle corresponds to the state of the communication device as follows.
Black circle circle: Communication device is sending start trigger signal in standard operation mode (sending location information)
Shaded circle: Communication device does not transmit start trigger signal in standard operation mode (transmits location information)
Open circle circle: Communication device is in energy saving mode (does not send location information)
The black circle communication device operates in the standard operation mode. In the standard operation mode, the communication device transmits the position information continuously or intermittently. On the other hand, a circle communication device without a person carrying a wireless terminal basically operates in an energy saving mode. Location information is not transmitted in the energy saving mode.

  When the communication device in the standard operation mode receives the identification information and the position information from the wireless terminal, the activation signal transmission unit 224 of the communication device transmits an activation trigger signal to the six nearby communication devices in the energy saving mode. The activation signal receivers 226 of the six peripheral communication devices receive the activation trigger signal. Since the activation signal receiving unit 226 notifies the energy saving control unit 222 that the activation trigger signal has been received, the energy saving control unit 222 turns on the power supply control unit 218. As a result, the six peripheral communication devices are exceptionally in the standard operation mode even if there is no person in the transmission range.

  In the standard operation mode, the power controller 218 supplies power to the functional block including the position signal transmitter 208 that has been turned off, so that the six peripheral communication devices can transmit position information.

  When the wireless communication unit 212 of the black circle communication device receives the identification information and the position information transmitted from the wireless terminal, the activation signal transmission unit 224 transmits an activation trigger signal to surrounding communication devices. For this reason, the six peripheral communication devices continue the standard operation mode.

  The activation trigger signal is transmitted radially and wirelessly from the communication device in the standard operation mode. Further, the surrounding is a communication device within a predetermined distance from the communication device in the standard operation mode. If this predetermined distance is variable, the number and spread of communication devices to be in the standard operation mode can be controlled. For this reason, it transmits to all the adjacent communication apparatuses. The activation trigger signal may be transmitted with some directivity. Thereby, it is possible to selectively control the communication device that is in the standard operation mode.

Thereafter, when the wireless terminal moves, some of the seven communication devices shift to the energy saving mode depending on the moving direction. The basic rules are as follows.
1) The communication device that has received the activation trigger signal enters the standard operation mode and transmits position information. The communication device that has entered the standard operation mode does not transmit the activation trigger signal until a response is received from the wireless terminal.
2) When a response is received from the wireless terminal, an activation trigger signal is transmitted.
3) When the state where neither the start trigger signal nor the response is received exceeds the specified time, the energy saving mode is set.

This will be described below with reference to the drawings. 13 to 16 are examples of diagrams schematically illustrating the operation of the communication apparatus according to the present embodiment.
FIG. 13 is an example of a diagram for explaining the relationship between the movement route of the person carrying the wireless terminal and the operation mode of the communication device. Point A is the position where the person carrying the wireless terminal is (shown by a black circle). The communication device at point A transmits position information to the wireless terminal at the bottom. The surrounding six communication devices are communication devices that are in the standard operation mode by the activation trigger signal of the communication device installed at the point A (indicated by hatching). Other blank circles are communication devices in energy saving mode. The wireless terminal moves from the point A to the transmission range of the communication device indicated by “a”.

  When the wireless terminal moves to the position a in FIG. 14, the communication terminal at the position a receives the identification information and the position information from the wireless terminal, and therefore transmits an activation trigger signal to the surrounding six communication devices. .

  In FIG. 14, the black circle is a communication apparatus in which the wireless terminal is located, and the hatched circle is the standard operation mode in response to the activation trigger signal. The communication devices at the positions “c”, “d”, and “e” in FIG. 14 are in the standard operation mode in response to the start trigger signal in FIG. 13, but the timer 216 eventually measures the time until the specified time. Return to.

  The communication device at the position indicated by the black circle in FIG. 13 maintains the standard operation mode by the activation trigger signal received from the communication device at the position a in FIG. However, the activation trigger signal is not transmitted because there is no response from the wireless terminal.

Next, the wireless terminal moves in the direction indicated by “b” in FIG.
FIG. 15 is an example of a diagram illustrating a process when a person carrying a wireless terminal moves to a point B that is the final point of the moving route. The processing described in FIGS. 13 and 14 is sequentially executed by each communication device on the route to the point B.

  FIG. 16 shows an operation mode of the communication apparatus when the wireless terminal finally arrives at the end point B of the moving route. The black circle is the position where the wireless terminal is located, and the hatched circle indicates that the communication device is in the standard operation mode activated by the activation trigger signal. Only these seven communication devices are in the standard operation mode, and most other communication devices in the white circles are in the energy saving mode. Therefore, the power consumption of the location information management system 1 can be reduced by setting the communication device to the energy saving mode.

FIG. 17 is an example of a flowchart illustrating a processing procedure of the communication apparatus according to the present embodiment.
First, the original power source of the communication device is turned on (S10).

  When the original power source 230 is turned on, the timer 216 starts measuring time (S20).

  Next, the process proceeds to step S70, and the position signal transmitter 208 transmits position information (S70). When a wireless terminal exists in the transmission range of the communication device, the wireless communication unit 212 receives the identification information and the position information transmitted from the wireless terminal 120.

  The control means 312 determines whether or not there is a response from the wireless terminal (S80).

  When there is no response from the wireless terminal (No in S80), the transmission of the position information is repeated until the timer 216 measures the specified time as described in Step S60 and the subsequent steps.

  When there is a response from the wireless terminal (Yes in S80), the activation signal transmission unit 224 transmits an activation trigger signal to surrounding communication devices (S90).

  Next, the control means 312 decodes the identification information received from the wireless terminal (S100).

  The terminal information transmission unit 310 transmits the identification information and position information transmitted from the wireless terminal 120 to the management server 160 via the management device 140 (S110).

  The process returns to step S50, and since there is a response from the wireless terminal, when the position signal transmission control unit 216 initializes the timer 216, the timer 216 starts measuring time from zero (S50). As described above, the timer 216 cannot measure until the specified time while the communication apparatus receives the identification information and the position information.

  Until the timer 216 measures the specified time (No in S60), the position signal transmitter 208 transmits position information (S70). The communication device repeats the processes of S80 to S110.

  When the timer 216 measures the specified time (Yes in S60), the energy saving control unit 222 turns off the power supply control unit 218, so that the communication device enters the energy saving mode (S30).

  Thereafter, the process branches in step S40 depending on whether the activation signal receiving unit 226 has received the activation trigger signal. That is, while the activation trigger signal is not received (No in S40), the communication device continues the energy saving mode (S30).

  When the activation trigger signal is received (Yes in S40), the timer 216 starts (S50), and the processes after Step S60 are executed.

  Note that the processing in FIG. 17 ends when the original power source is turned off (S200).

  As described above, the position information management system 1 according to the present embodiment can reduce wasteful transmission processing and reduce power consumption when the communication apparatus is in the energy saving mode.

[Modification 1]
By using the acceleration sensor unit 228, the power consumption of the communication device can be further reduced. In the above example, when there is a response from the wireless terminal, the communication device cannot enter the energy saving mode. However, even if there is a response from the wireless terminal, if the wireless terminal does not move, it is less necessary to transmit an activation trigger signal to surrounding communication devices. In addition, since the communication device at the position where the wireless terminal is located has acquired the identification information and position information of the wireless terminal once, it does not have to receive the same identification information and position information.

  FIG. 18 is an example of a diagram for explaining the power consumption of the communication apparatus according to the present modification. There is a wireless terminal in the black circle in FIG. 18, and an activation trigger signal is transmitted to the surrounding hatched communication device.

The energy saving control unit 222 controls ON / OFF of the power supply control unit 218 as follows.
(i) When the acceleration sensor unit 228 detects the acceleration of the wireless terminal, the power control unit 218 is turned on.
(ii) When the acceleration sensor unit 228 does not detect the acceleration of the wireless terminal, the time that is not detected is measured, and the power supply control unit 218 is turned off when a predetermined time has elapsed.

  When the power control unit 218 of the communication device at the black circle position is turned off, the power saving mode is set, so that the power consumption of the communication device at the black circle position can be reduced. When the power control unit 218 is turned off, the position signal transmission unit 208 does not transmit the position information. For this reason, since the response from the wireless terminal is not received, the activation signal transmission unit 224 does not transmit the activation trigger signal. As a result, surrounding communication devices also enter the energy saving mode.

  It should be noted that the acceleration is detected to the extent that the wireless terminal is expected to move. For example, the condition is that the acceleration is equal to or greater than a threshold value, or that the acceleration is equal to or greater than the threshold value and has continued for a certain period of time.

  Therefore, by using the acceleration sensor unit 228, the power consumption of not only the black circle communication device of FIG. 18 but also the surrounding communication devices can be reduced.

  When the person carrying the wireless terminal starts to move and the acceleration sensor unit 228 detects the acceleration of the wireless terminal, the power control unit 218 of the communication device is turned on. As a result, the position information is transmitted to the wireless terminal and the wireless terminal responds, so that the activation signal transmission unit 224 transmits the activation trigger signal to surrounding communication devices. Therefore, the communication device at the position after movement can transmit the position information to the wireless terminal.

  FIG. 19 is an example of a flowchart illustrating a processing procedure of the communication apparatus according to the present modification. In FIG. 19, processing characteristic to FIG. 17 will be mainly described.

  First, the original power source of the communication device is turned on (S10).

  When the original power source 230 is turned on, the timer 216 starts measuring time (S20).

  The process proceeds to step S70, and the position signal transmitter 20 transmits position information (S70). When a wireless terminal exists in the transmission range of the communication device, the wireless communication unit 212 receives the identification information and the position information transmitted from the wireless terminal 120.

  The control means 312 determines whether or not there is a response from the wireless terminal (S80).

  When there is no response from the wireless terminal (No in S80), the transmission of the position information is repeated until the timer 216 measures the specified time as described in Step S60 and the subsequent steps.

  When there is a response (Yes in S80), the energy saving control unit 222 further determines whether or not the acceleration sensor unit 228 has detected the acceleration of the wireless terminal (S82).

  When the acceleration sensor unit 228 does not detect the acceleration of the wireless terminal (No in S82), the energy saving control unit 222 determines whether or not the state where the acceleration is not detected continues for a predetermined time (S84).

  If the predetermined time has not elapsed (Yes in S84), the process proceeds to step S90.

  If the predetermined time has elapsed (No in S84), the process proceeds to step S30. Therefore, when the energy saving control unit 222 turns off the power supply control unit 218, the communication apparatus enters the energy saving mode (S30).

  In step S90, the activation signal transmitter 224 transmits an activation trigger signal to surrounding communication devices (S90). The subsequent processing is the same as in FIG.

  Therefore, according to this modification, since there is no response from the wireless terminal, the energy saving mode is set not only when the timer 216 measures until the specified time but also when the wireless terminal stops moving even if there is a response from the wireless terminal. be able to.

[Modification 2]
In the location information management system 1 of the present embodiment, power consumption can be reduced. However, if there is no wireless terminal, all communication terminals are in the energy saving mode, and there is no communication terminal that transmits location information. There is a risk that.

  When all the communication terminals are in the energy saving mode, there is no communication apparatus that returns to the standard operation mode even if the wireless terminal enters the transmission range of the position information of the communication apparatus. For this reason, it is effective that, for example, the management device 140 or the administrator sets one or more communication devices so as not to enter the energy saving mode. The energy-saving control unit 222 of the communication device set in this way does not shift to the energy-saving mode by referring to the setting when the condition for shifting to the energy-saving mode is satisfied (when the timer measures until the specified time). Controlled. The setting is stored in, for example, a ROM, RAM, or register according to a predetermined flag state.

  Further, instead of setting an individual communication device, the communication device may inquire whether or not the management device 140 may shift to the energy saving mode when the timer 216 measures until a specified time. In this case, it is necessary to set whether or not each communication device may shift to the energy saving mode in the management device 140, but since individual settings are not necessary, management becomes easy.

  FIG. 20 is an example of a diagram schematically illustrating a communication device that does not shift to the energy saving mode. In FIG. 20, the communication devices near the floor entrance 21 are set so as not to enter the energy saving mode. The communication device near the entrance 21 is a communication device whose position information transmission range is a range that is surely passed when a person carrying a wireless terminal opens the door and enters.

  In FIG. 20, three communication devices near the three entrances 21 (communication devices at positions a, b, and c in the figure) are not in the energy saving mode and always operate in the standard operation mode. The entrance includes the entrance to the room in a broad sense regardless of the presence or absence of the door and the shape, for example, an entrance from the elevator to the room. Further, the room may be a range divided by partitions such as partitions.

  When a person carrying a wireless terminal enters from the central entrance 21, the communication device at the position b receives the response of the wireless terminal, and transmits an activation trigger signal to the three surrounding communication terminals. As a result, the three surrounding communication devices can enter the standard operation mode.

  As in this example, the communication device near the entrance 21 of the floor is not set so as not to enter the energy saving mode. It is also effective to turn on the original power supply 230. Thereby, since the communication apparatus of the whole floor can be in an energy saving mode, power consumption can be reduced.

  In addition to the entrance, a communication device installed on a route or the like on which the wireless terminal is constantly moving can be prohibited from entering the energy saving mode. Thereby, since the transition from the standard operation mode to the energy saving mode does not occur frequently, the load on the communication device can be suppressed.

100, 102, 104, 106 Communication device 120, 122, 124 Wireless terminal 140 Management device 160 Management server 180 Network 190 Network

Japanese Patent No. 4620410 JP 2010-159980 A International Publication No. 2005/086375

Claims (8)

A position information management system comprising: a communication apparatus having position information of the communication apparatus; a wireless terminal having identification information and communicating with the communication apparatus; and a management server for managing the position of the wireless terminal,
The wireless terminal is
Position information receiving means for receiving the position information transmitted by the communication device;
Identification information transmitting means for transmitting the identification information of the wireless terminal together with the received position information to the communication device,
The communication device
Position information transmitting means for transmitting the position information;
Terminal information receiving means for receiving the identification information and the position information transmitted from the wireless terminal that has received the position information of the communication device;
Terminal information transmitting means for transmitting the identification information and the location information to the management server;
A specified time measuring means for starting measuring a specified time based on a predetermined opportunity;
A power consumption reducing means for stopping power supply to the position information transmitting means when a time during which the terminal information receiving means does not receive the identification information and the position information is equal to or longer than the specified time,
The management server
Receiving means for receiving the identification information and the position information from the communication device;
Management means for managing the position of the wireless terminal based on the identification information and the position information;
A location information management system. The communication device
An activation signal transmitting means for transmitting an activation signal for activating another communication device to the other communication device;
Activation signal receiving means for receiving the activation signal from the other communication device,
When the terminal information receiving means receives the identification information and the position information, the activation signal transmitting means transmits the activation signal to the other communication device.
The position information management system according to claim 1. When the activation signal receiving means receives the activation signal, the power consumption reduction means starts transmission of the position information by the position information transmission means,
The position information management system according to claim 2. The communication device
A movement amount information acquisition means for acquiring movement amount information for predicting the movement amount of the wireless terminal;
When the terminal information receiving unit receives the identification information and the position information, and the movement amount information acquisition unit acquires the movement amount information that is equal to or greater than a threshold value, the activation signal transmission unit receives the activation signal To the communication device
If the movement amount information acquisition unit does not acquire the movement amount information greater than or equal to a threshold even before the specified time has elapsed, the power consumption reduction unit prohibits transmission of the position information by the position information transmission unit. To
The position information management system according to claim 2 or 3, wherein When the activation signal receiving means receives the activation signal from another communication device, or when the terminal information receiving means receives the identification information and the position information, the specified time measuring means is determined from an initial value. Start measuring the specified time,
The position information management system according to claim 2, wherein The communication device
It is set whether or not transmission of the position information by the position information transmitting means can be stopped when the time when the terminal information receiving means does not receive the identification information and the position information is equal to or longer than the specified time. Has stop permission setting information,
The power consumption reduction means cannot stop the transmission of the position information in the stop permission / inhibition setting information even when the time when the terminal information receiving means does not receive the identification information and the position information is longer than the specified time. If it is set to be, do not stop the power supply to the position information transmission means,
The position information management system according to claim 1. A communication device having position information,
Position information transmitting means for transmitting the position information to a wireless terminal having identification information of the own device;
Terminal information receiving means for receiving the identification information and the position information transmitted from the wireless terminal that has received the position information of the communication device;
Terminal information transmitting means for transmitting the identification information and the position information to a management server that manages the position of the wireless terminal;
A specified time measuring means for starting measuring a specified time based on a predetermined opportunity;
Power consumption reducing means for stopping power supply to the position information transmitting means when the time during which the terminal information receiving means does not receive the identification information and the position information is equal to or longer than the specified time. A communication device. A location information receiving step in which a wireless terminal having identification information and communicating with a communication device receives location information transmitted by the communication device;
An identification information transmission step in which the wireless terminal transmits the identification information of the wireless terminal to the communication device together with the received position information;
A position information transmission step in which the communication apparatus having the position information of the communication apparatus transmits the position information;
A terminal information receiving step in which the communication apparatus receives the identification information and the position information transmitted from the wireless terminal that has received the position information of the communication apparatus;
A terminal information transmission step in which the communication device transmits the identification information and the position information to a management server;
A specified time measuring step in which the communication device starts measuring a specified time based on a predetermined trigger; and
Power consumption for stopping power supply to the function for transmitting the location information when the time during which the communication device does not receive the identification information and the location information is equal to or longer than the specified time in the terminal information reception step Reduction steps;
A receiving step in which the management server that manages the position of the wireless terminal receives the identification information and the position information from the communication device;
A management step of managing the location of the wireless terminal based on the identification information and the location information;
A location information management method.

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