JP2018013976A - Mobile body search system and mobile body search method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent cost from increasing.SOLUTION: A mobile body search system 100 for searching for a first mobile body comprises: a transmitter 104 held on the first mobile body, for wirelessly transmitting a detection signal 151; a receiver 103B for receiving the detection signal 151; and an acquisition unit 105 held on a second mobile body. The receiver 103B, when receiving the detection signal 151, stores reception information 171 which indicates reception of the detection signal 151. The acquisition unit 105 acquires the reception information 171 from the receiver 103B when approaching the receiver 103. The mobile body search system 100 generates information for searching for the first mobile body using the reception information 171 acquired by the acquisition unit 105.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mobile body search system and a mobile body search method for searching for a mobile body.

  In recent years, with the increase of elderly people, the management of patients or residents in hospitals, nursing homes or nursing homes has become a problem. Such residents include people with dementia and may be missing due to wrinkles.

  On the other hand, in order to detect the position of the lost child in the facility, a technique using wireless communication is known (for example, see Patent Document 1).

JP 2007-241529 A

  In such a system, it is desired to be able to search for a patient who has gone out of the facility due to a trap or the like. However, in order to detect the position of a patient who has left the facility, it is necessary to arrange a large number of receivers over a very wide range. Thereby, there exists a subject that cost increases.

  Then, an object of this invention is to provide the mobile body search system or mobile body search method which can suppress the increase in cost.

  To achieve the above object, a mobile body search system according to an aspect of the present invention is a mobile body search system for searching for a first mobile body, which is held by the first mobile body and is a detection signal. A transmitter for wirelessly transmitting the signal, a receiver for receiving the detection signal, and an acquisition unit held by a second moving body. When the receiver receives the detection signal, the receiver The reception information indicating that a signal has been received is accumulated, and when the acquisition device approaches the reception device, the reception information is acquired from the reception device, and the mobile search system is acquired by the acquisition device. Information for searching for the first moving body is generated using the received information.

  According to this configuration, since the reception information of the receiver is collected by the acquisition device, the receiver does not need to have a function of performing wide area communication. Thereby, since the cost of a receiver can be reduced, the mobile body search system which can suppress the increase in cost is realizable.

  For example, when the acquisition device approaches the receiver, the acquisition information may be acquired from the receiver using wireless communication.

  According to this configuration, the acquisition device can acquire reception information from the receiver using, for example, short-range wireless communication.

  For example, the transmitter wirelessly transmits the detection signal including specific information indicating whether the transmitter is a specific transmitter or a normal transmitter other than the specific transmitter, and the receiver Based on the specific information, receiving the normal reception information, which is the reception information indicating that the detection signal transmitted from the normal transmitter has been received, and the detection signal transmitted from the specific transmitter The specific reception information may be preferentially stored among the specific reception information which is the reception information indicating the above.

  According to this configuration, it is possible to preferentially store received information on a person who needs special monitoring. Thereby, the memory capacity of the receiver can be reduced and the processing amount of the receiver can be reduced.

  For example, when the receiver receives the detection signal transmitted from the specific transmitter, the receiver may issue an alarm by light or sound.

  According to this configuration, when the second moving body approaches the receiver, it can be quickly determined whether or not the receiver stores valid reception information.

  For example, the specific information may be a specific flag indicating whether the transmitter is the specific transmitter that has come out of a predetermined management range or the normal transmitter other than the specific transmitter. Good.

  According to this configuration, it is possible to preferentially store the reception information of the deceased.

  For example, the transmitter belongs to one of a plurality of groups, the specific information is a group identifier indicating a group to which the transmitter belongs, and a group to be detected is set in the receiver. The specific transmitter may be a transmitter belonging to the group to be detected.

  According to this configuration, it is possible to preferentially store reception information of transmitters belonging to a specific group.

  For example, the second moving body may be a drone.

  According to this configuration, it is possible to quickly collect received information using a drone.

  In addition, a mobile body search method according to an aspect of the present invention is a mobile body search method in a mobile body search system for searching for a mobile body, and the mobile body search system is held by the first mobile body. A transmitter that wirelessly transmits a detection signal, a receiver that receives the detection signal, and an acquisition unit that is held by a second moving body, and the receiver receives the detection signal An accumulation step of accumulating reception information indicating that the detection signal has been received; an acquisition step of acquiring the reception information from the receiver when the acquisition device approaches the receiver; and the acquisition Generating the information for searching for the first moving body using the received information acquired by the device.

  According to this, since the reception information of the receiver is collected by the acquisition device, the receiver does not need to have a function of performing wide area communication. Thereby, since the cost of a receiver can be reduced, the mobile body search system which can suppress the increase in cost is realizable.

  Note that these comprehensive or specific aspects may be realized by a system, a method, an integrated circuit, a computer program, or a recording medium such as a computer-readable CD-ROM, and the system, method, integrated circuit, and computer program. Also, any combination of recording media may be realized.

  The present invention can provide a mobile search system or a mobile search method that can suppress an increase in cost.

FIG. 1 is a diagram illustrating a configuration of a mobile search system according to an embodiment. FIG. 2 is a diagram illustrating a connection relationship in the mobile search system according to the embodiment. FIG. 3 is a block diagram of the transmitter according to the embodiment. FIG. 4 is a block diagram of a receiver arranged in the management range according to the embodiment. FIG. 5 is a block diagram of a receiver arranged outside the management range according to the embodiment. FIG. 6 is a block diagram of the acquisition device according to the embodiment. FIG. 7 is a block diagram of the management apparatus according to the embodiment. FIG. 8 is a diagram illustrating an operation example when the transmitter of the mobile body search system is present in the management range according to the embodiment. FIG. 9 is a diagram illustrating a configuration example of a detection signal according to the embodiment. FIG. 10 is a diagram illustrating a specific example of the detection signal according to the embodiment. FIG. 11 is a diagram illustrating a configuration example of a notification signal according to the embodiment. FIG. 12 is a flowchart showing the operation of the transmitter according to the embodiment. FIG. 13 is a flowchart showing the operation of the receiver arranged in the management range according to the embodiment. FIG. 14 is a diagram illustrating an operation example in the case where the transmitter of the mobile unit search system goes out of the management range according to the embodiment. FIG. 15 is a flowchart showing an operation of a receiver arranged outside the management range according to the embodiment. FIG. 16 is a diagram illustrating an example of reception information according to the embodiment. FIG. 17 is a flowchart showing a reception information signal transmission operation of a receiver arranged outside the management range according to the embodiment. FIG. 18 is a diagram illustrating a configuration example of a reception information signal according to the embodiment. FIG. 19 is a diagram illustrating a display example of position information according to the embodiment.

  Hereinafter, embodiments will be specifically described with reference to the drawings.

  Note that each of the embodiments described below shows a specific example of the present invention. The numerical values, shapes, materials, constituent elements, arrangement positions and connecting forms of the constituent elements, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements.

  In the mobile search system, it is desired to deal with a wider range. Specifically, in the case where a mobile body search system in which the inside of a facility is set as a detection range is provided, it is impossible to cope with a case where a patient goes out of the facility due to a trap.

  On the other hand, such a mobile body search system can be used for various purposes such as monitoring at the time of going to and from school or in the vicinity of a home, in addition to the use in the above-described facilities. By integrating these multiple systems and managing them collectively, for example, if a target person belonging to a certain facility goes out of the detection range of that facility's system, The system can detect the position of the subject. Thereby, early detection of a deaf person etc. is realizable.

  Also, in order to detect a wide range including outside the facility, it is necessary to install a plurality of receivers over a wide range. Here, as a method of collecting data obtained by a plurality of receivers, a method using wide area communication is conceivable. Here, wide-area communication means communication of at least several kilometers or more, such as a public telephone network, Internet line (including wireless or wired LAN, Wi-Fi (registered trademark), etc.), or an original wired or wireless network. Communication method. For example, as a unique wired or wireless network, there is a method in which each of a plurality of receivers relays signals from other receivers and transmits signals.

  However, when the above method is used, there is a concern that the cost of the receiver increases and the communication fee increases. In particular, in order to cover a wide range, the number of receivers becomes enormous, and the influence of the increase in cost becomes remarkable. In addition, when battery driving is performed, there is a problem that driving time is shortened due to an increase in power consumption of the receiver. Further, when constructing a wireless network using relays, it is necessary to arrange receivers or repeaters at intervals according to the communication distance of each receiver. Thereby, there also exists a subject that the number of a receiver or a repeater will increase.

  In the present embodiment, a mobile search system that solves these problems and can collect data obtained by a plurality of receivers without using the above-described wide-area communication will be described.

  First, the configuration of the mobile search system according to the present embodiment will be described. FIG. 1 is a diagram showing a configuration of a mobile search system 100 according to the present embodiment. FIG. 2 is a diagram illustrating a connection relationship between the devices. In FIG. 2, only one receiver 103A and 103B is shown for simplification of explanation.

  A mobile object search system 100 shown in FIG. 1 is a system for searching for a mobile object. This mobile body search system 100 is a system for detecting the position of one or more mobile bodies, and for example, a monitoring system (child monitoring system or 徘徊 for detecting the position of a monitoring subject such as an elderly person or a child). Used in surveillance systems).

  The mobile body search system 100 includes a management device 102, a plurality of receivers 103A and 103B, a transmitter 104, and an acquisition device 105.

  The transmitter 104 is held (carried or worn) by each of a plurality of moving bodies (for example, elderly people) who are monitoring subjects. For example, the transmitter 104 is a bracelet type (watch type) worn on the arm of the monitoring subject, a necklace type hanging on the neck of the monitoring subject, or the like. Alternatively, the transmitter 104 may be a name tag type or the like. Note that the moving object to be monitored is not limited to a person, but may be an animal or a movable machine.

  The transmitter 104 periodically transmits a detection signal 151 by radio. The radio signal used in this radio transmission is, for example, a radio signal conforming to IEEE 802.15.4, for example, a 2.4 GHz band, a 920 MHz band, or a 950 MHz band radio signal. That is, the radio signal used for the mobile body search system 100 is a radio signal having a relatively narrow radio communication range (for example, about 200 to 300 m). Note that other wireless signals such as Bluetooth (registered trademark) may be used. Further, the transmitter 104 may transmit any of the above-described types of radio signals, or may transmit a plurality of types of radio signals simultaneously or in a time division manner.

  The plurality of receivers 103 </ b> A are arranged at predetermined intervals within the management range 106 that is a monitoring target area, and receive the detection signals 151 that are periodically wirelessly transmitted from the transmitter 104. Here, the management range 106 is, for example, a nursing home, a nursing facility, a school road, a park, a collective housing, or a private home. It should be noted that at least some of the plurality of receivers 103A may be carried by a supervisor (for example, facility staff) or the like. That is, each of the plurality of receivers 103A may be fixedly installed or may be held by a moving body.

  When receiving the detection signal 151, the receiver 103A notifies the management apparatus 102 that the detection signal 151 has been detected. Specifically, the receiver 103 </ b> A transmits a notification signal 153 indicating that the detection signal 151 has been detected to the management apparatus 102. Note that a communication method between the receiver 103A and the management apparatus 102 is not particularly limited. For example, any one of the above-described wide area communication methods can be used.

  Further, the transmission of the notification signal 153 by the receiver 103A may be performed only when the detection signal 151 is received, or may be performed periodically regardless of the reception of the detection signal 151. When the notification signal 153 is periodically transmitted, if the detection signal 151 is not received, information indicating that it has not been received is included in the notification signal 153.

  The management device 102 is, for example, a PC (personal computer). The management apparatus 102 receives the notification signal 153 transmitted from the receiver 103 </ b> A, and detects the position of the monitoring target person using information included in the notification signal 153. In addition, the management apparatus 102 displays position information indicating the position of the monitoring target person.

  The plurality of receivers 103 </ b> B are arranged at predetermined intervals outside the management range 106, and receive the detection signal 151 that is wirelessly transmitted from the transmitter 104 when the transmitter 104 leaves the management range 106. When receiving the detection signal 151, the receiver 103B accumulates reception information 171 indicating that the detection signal 151 has been detected.

  The acquisition device 105 is, for example, a smartphone or the like that is carried by a supervisor (for example, a staff member of a facility). For example, when the transmitter 104 (monitoring target person) goes out of the management range 106, the monitoring target person is searched in a state where the monitoring person possesses the acquisition device 105. When the acquisition unit 105 approaches the receiver 103B, the acquisition unit 105 acquires a reception information signal 155 including the reception information 171 stored in the receiver 103B from the receiver 103B. Further, the acquisition unit 105 transmits the acquired reception information signal 155 as the reception information signal 156 to the management apparatus 102. Note that a communication method between the acquisition device 105 and the management apparatus 102 is not particularly limited. For example, any of the above-described wide-area communication methods can be used.

  In addition, the acquisition device 105 should just be hold | maintained at the moving body. For example, the acquirer 105 may be built in or attached to a movable machine. For example, the acquirer 105 may be built in or attached to an unmanned aerial vehicle (drone) that can fly unattended.

  The management apparatus 102 detects the position of the monitoring target person using information included in the reception information signal 156. In addition, the management apparatus 102 displays position information indicating the position of the monitoring target person.

  Hereinafter, the configuration of each apparatus will be described. FIG. 3 is a block diagram of the transmitter 104. The transmitter 104 includes a wireless transmission unit 111, a wireless reception unit 112, a switching mode setting unit 113, a specific mode setting unit 114, a transmitter ID storage unit 115, a transmission control unit 116, and a power supply unit 117. Is provided.

  The wireless transmission unit 111 periodically wirelessly transmits the detection signal 151. The wireless reception unit 112 receives the confirmation signal 152 wirelessly transmitted from the receiver 103A.

  The switching mode setting unit 113 switches the switching mode of the transmitter 104 between the normal switching mode and the non-switchable mode. Here, the normal switching mode is a mode in which an operation mode described later can be switched between the normal operation mode and the specific mode. The non-switchable mode is a mode in which the operation mode is always set to the normal operation mode. The switching mode is switched by operating an operation unit (not shown) such as a button or a switch provided in the transmitter 104, for example. The switching mode may be switched based on an instruction from another device via wireless or wired communication.

  The specific mode setting unit 114 switches the operation mode of the transmitter 104 between the normal operation mode and the specific mode. When the transmitter 104 is a specific transmitter that requires more extensive and detailed detection, the operation mode is set to the specific mode.

  The transmitter ID storage unit 115 stores a transmitter ID (transmitter identifier) 161A and a group ID (group identifier) 162A, which are information for uniquely identifying the transmitter 104. The group ID 162A is an identifier indicating the group to which the transmitter 104 belongs. The transmitter ID 161A is information for uniquely identifying each of the plurality of transmitters 104 included in the group, and is an identifier assigned to the transmitter 104.

  The transmission control unit 116 generates the detection signal 151 according to the operation mode, and controls the interval at which the wireless transmission unit 111 transmits the detection signal 151, the radio wave intensity, and the like.

  The power supply unit 117 is a power supply that supplies power to the transmitter 104, and is, for example, a battery or a battery. That is, the transmitter 104 can be operated only by power supply from the inside (or power generated inside) without receiving power supply from the outside.

  Next, the configuration of the receiver 103A will be described. FIG. 4 is a block diagram illustrating a configuration of the receiver 103A. The receiver 103 </ b> A includes a wireless reception unit 121, a reception intensity measurement unit 122, a position measurement unit 123, a signal generation unit 124, a communication unit 125, a wireless transmission unit 126, and a group ID storage unit 127.

  The wireless reception unit 121 receives the detection signal 151 wirelessly transmitted from the transmitter 104. The reception intensity measurement unit 122 measures the reception radio wave intensity of the detection signal 151 received by the wireless reception unit 121.

  The position measurement unit 123 measures the position where the receiver 103A is disposed. For example, the position measurement unit 123 has a GPS (Global Positioning System) function, and uses the GPS function to measure the position where the receiver 103A is disposed. Note that the receiver 103A may not include the position measurement unit 123.

  The signal generator 124 generates the notification signal 153 when the detection signal 151 is received. The communication unit 125 transmits the notification signal 153 to the management device 102. When the detection signal 151 is received, the wireless transmission unit 126 wirelessly transmits a confirmation signal 152 to the transmitter 104.

  The group ID storage unit 127 stores a group ID 162C indicating the group to which the receiver 103A belongs. Here, the group to which the receiver 103A belongs is the same as the group to which the transmitter 104 belongs, and the group ID 162C and the group ID 162A indicate the same ID. When a plurality of management ranges 106 are set and a part of the plurality of management ranges 106 overlaps, one receiver 103A belongs to a plurality of groups, and the receiver 103A stores a plurality of group IDs 162C. May be.

  Note that the function of the receiver 103A may be realized by a plurality of devices obtained by dividing the function by function or signal processing.

  Next, the configuration of the receiver 103B will be described. FIG. 5 is a block diagram illustrating a configuration of the receiver 103B. The receiver 103B includes a wireless reception unit 121, a reception intensity measurement unit 122, a position measurement unit 123, a signal generation unit 124A, a group ID storage unit 127A, a reception information storage unit 128, and a short-range communication unit 129. And an alarm unit 130.

  The functions of the wireless reception unit 121, the reception intensity measurement unit 122, and the position measurement unit 123 are the same as the functions of the wireless reception unit 121, the reception intensity measurement unit 122, and the position measurement unit 123 that the receiver 103A includes.

  When the detection signal 151 is received, the reception information storage unit 128 stores reception information 171 indicating that the detection signal 151 has been received.

  The short-range communication unit 129 receives the reception request 154 transmitted from the acquisition unit 105. In addition, the short-range communication unit 129 transmits a reception information signal 155 to the acquisition unit 105 in response to the reception request 154. Here, the wireless communication method used by the short-range communication unit 129 may be the same as the wireless communication method used by the wireless reception unit 121, for example, BLE (Bluetooth (registered trademark) Low Energy), or short-range. Other wireless communication methods such as wireless communication (NFC) may be used.

  When the reception request 154 is received, the signal generation unit 124A generates the reception information signal 155 including the reception information 171.

  The group ID storage unit 127A stores a group ID 162E indicating a group to which the receiver 103B belongs, and a specific group ID 172 indicating a preset group. The specific group ID 172 indicates the group to which the transmitter 104 to be detected by the receiver 103B belongs. The group ID storage unit 127A may store a plurality of specific group IDs 172.

  In FIG. 1, only two groups of the management range 106 and other ranges are shown, but three or more groups may be set. For example, a range other than the management range 106 may be divided into a plurality of groups. Further, the plurality of management ranges 106 may be set as different groups, and one or more transmitters 104 may be set for each group of the management ranges 106.

  When the alarm unit 130 receives the detection signal 151 from the specific transmitter 104, the alarm unit 130 issues an alarm by light or sound. For example, the alarm unit 130 includes a light emitting unit such as an LED, and turns on or blinks the light emitting unit when receiving a detection signal 151 from a specific transmitter 104.

  Note that the function of the receiver 103B may be realized by a plurality of devices obtained by dividing the function by function or signal processing.

  Next, the configuration of the acquisition unit 105 will be described. FIG. 6 is a block diagram illustrating a configuration of the acquisition unit 105. The acquisition unit 105 includes a short-range communication unit 135 and a communication unit 136.

  The short-range communication unit 135 can communicate with the short-range communication unit 129 included in the receiver 103B, wirelessly transmits the reception request 154 to the receiver 103B, and receives the reception information signal 155 transmitted from the receiver 103B. .

  The communication unit 136 transmits the received reception information signal 155 to the management apparatus 102 as a reception information signal 156.

  Note that the acquisition unit 105 may further have a function of receiving the detection signal 151 in the same manner as the receiver 103A or 103B.

  Next, the configuration of the management apparatus 102 will be described. FIG. 7 is a block diagram illustrating a configuration of the management apparatus 102. The management device 102 includes a communication unit 141, a receiver position storage unit 142, a position information generation unit 143, and a display unit 144.

  The communication unit 141 receives the notification signal 153 transmitted from the receiver 103A and also receives the reception information signal 156 transmitted from the acquisition unit 105.

  The receiver position storage unit 142 stores the positions of the plurality of receivers 103A and 103B. For example, the receiver position storage unit 142 includes information indicating the positions of the receivers 103A and 103B included in the notification signal 153 and the reception information signal 156, or the receiver 103A or the receiver 103A or 103B sent in advance from the receiver 103A or 103B. Information indicating the position of 103B is stored. The receiver position storage unit 142 may store information indicating the positions of the plurality of receivers 103A and 103B, which are input in advance by a user operation or the like.

  The position information generation unit 143 generates position information indicating the position of the transmitter 104 using information included in the notification signal 153 and the reception information signal 156. The display unit 144 displays position information.

  In addition, the structure of the mobile body search system 100 is not limited to the structure shown in FIG. For example, the mobile search system 100 may include a plurality of management devices 102. Also, some of the plurality of management devices 102 may be mobile terminals (for example, smartphones) carried by facility staff or guardians.

  Further, the function of the management apparatus 102 may be realized by a plurality of devices. For example, a part of the function of the management apparatus 102 may be realized by a PC, and the other part may be realized by a smartphone carried by a guardian. Specifically, the position information is generated by a device (for example, a PC), and the generated position information is transmitted to another device (for example, a smartphone) via a network or the like. It may be displayed.

  In addition, the receiver 103A or the acquisition device 105 may have at least a part of the function of the management device 102, or the management device 102 may have at least a part of the function of the receiver 103A or the acquisition device 105. .

  When the management device 102 and the receiver 103A or the acquisition device 105 are realized as a single device, signal transmission between the management device 102 and the receiver 103A or the acquisition device 105 is performed within the device. Done in In other words, the transmission of the notification signal 153 or the reception information signal 156 described above includes not only transmission between devices via a network or the like but also transmission of signals within the device.

  In the above description, a method of using wireless communication is described as a communication method between the acquisition unit 105 and the receiver 103B. However, wired communication such as connecting both devices with a wired cable may be used. Further, data may be transmitted via a recording medium such as an SD card.

  In FIG. 1, one transmitter 104 and one acquirer 105 are described, but a plurality of transmitters 104 or a plurality of acquirers 105 may exist.

  Hereinafter, the operation of the mobile object search system 100 will be described. First, the normal operation in which the transmitter 104 exists in the management range 106 will be described. FIG. 8 is a diagram illustrating the operation of the mobile body search system 100 in this case.

  The transmitter 104 has the operation mode set to the normal operation mode, and periodically transmits the detection signal 151 (S101).

  FIG. 9 is a diagram illustrating a configuration of the detection signal 151. As shown in FIG. 9, the detection signal 151 includes a transmitter ID 161A and a group ID 162A for identifying a transmission source transmitter that is the transmission source transmitter 104 of the detection signal 151, and a specific flag 163A.

  The transmitter ID 161 </ b> A and the group ID 162 </ b> A are set in advance and stored in the transmitter ID storage unit 115 of the transmitter 104. The group ID 162A indicates the group to which the transmitter 104 belongs. The transmitter ID 161 </ b> A is information for uniquely identifying each of the plurality of transmitters 104 included in the group, and is an ID assigned to the transmitter 104.

  The specific flag 163A is a 1-bit flag indicating whether the operation mode of the transmitter 104 is a specific mode or a normal operation mode. In other words, the specific flag 163A indicates whether or not the transmitter 104 is a specific transmitter that requires a wider range and detailed detection. That is, the specific flag 163A indicates whether or not it is a target for special detection such as wrinkles. Whether or not the operation mode is the specific mode may be indicated by whether or not the specific flag 163A is included in the detection signal 151. For example, the specific flag 163A may be included in the detection signal 151 only in the specific mode.

  FIG. 10 is a diagram illustrating a specific example of information included in the detection signal 151. As shown in FIG. 10, the group ID 162A may be a hierarchical ID. In FIG. 10, prefectures, cities, and facilities are provided as hierarchies, but this is an example, and the number of hierarchies and units may be arbitrary.

  In the example shown in FIG. 8, since the transmitter 104 is operating in the normal operation mode, the detection signal 151 including the specific flag 163A indicating the normal operation mode is transmitted.

  The receiver 103 </ b> A that has received the detection signal 151 compares the group ID 162 </ b> A included in the received detection signal 151 with the group ID 162 </ b> C to which it belongs stored in the group ID storage unit 127. Here, since the transmission source transmitter 104 belongs to the group to which the transmitter belongs, the group ID 162A and the group ID 162C match. In this case, the receiver 103A transmits a notification signal 153 indicating that the detection signal 151 has been received to the management apparatus 102 (S102).

  FIG. 11 is a diagram showing the configuration of the notification signal 153. As shown in FIG. As illustrated in FIG. 11, the notification signal 153 includes a transmitter ID 161B, a group ID 162B, a specific flag 163B, a receiver ID 164, received radio wave intensity information 165, and receiver position information 166.

  The transmitter ID 161B and the group ID 162B indicate the transmitter 104 that is the transmission source of the detection signal 151. For example, the transmitter ID 161B and the group ID 162B are the same IDs as the transmitter ID 161A and the group ID 162A included in the detection signal 151.

  The specific flag 163B indicates whether the operation mode of the transmitter 104 that is the transmission source of the detection signal 151 is the specific mode or the normal operation mode. For example, the specific flag 163B is the same flag as the specific flag 163A included in the detection signal 151.

  The receiver ID 164 is the receiver 103 </ b> A that has received the detection signal 151, and indicates the receiver 103 </ b> A that is the transmission source of the notification signal 153.

  The received radio wave intensity information 165 indicates the received radio wave intensity of the detection signal 151 received by the receiver 103A.

  The receiver position information 166 indicates the current position of the receiver 103A. For example, the receiver position information 166 is position information of the receiver 103A measured by the GPS or the like included in the receiver 103A. When the receiver 103A is a stationary device, the receiver position information 166 may not be included in the notification signal 153.

  Further, the notification signal 153 may include information other than the above. For example, the notification signal 153 may include information indicating the time when the detection signal 151 is received.

  Further, when transmitting the notification signal 153, the receiver 103A transmits a confirmation signal 152 indicating that the detection signal 151 has been received to the transmitter 104 that is the transmission source of the detection signal 151 (S103). The transmission order of the notification signal 153 and the confirmation signal 152 may be arbitrary.

  The management apparatus 102 that has received the notification signal 153 generates position information indicating the position of the transmitter 104 by using the received plurality of notification signals 153 (S104). Specifically, the position information generation unit 143 uses the received radio wave intensity of the detection signal 151 in the receiver 103A indicated by the received radio wave intensity information 165 included in the notification signal 153 and the position of the receiver 103A. The position of the transmitter 104 is calculated. Here, as the position of the receiver 103A, the positions of the plurality of receivers 103A indicated by the plurality of receiver position information 166 included in the notification signal 153 or a plurality of receptions stored in the receiver position storage unit 142 are used. The position of the vessel 103A is used.

  The received radio wave intensity changes according to the distance between the receiver 103A and the transmitter 104 (the shorter the distance, the higher the received radio wave intensity). Therefore, the position information generation unit 143 can determine the position of the transmitter 104 from the received radio wave intensity and the position of the receiver 103A for the plurality of receivers 103A.

  In addition, the position information generation unit 143 transmits the transmitter from only information indicating whether or not each of the receivers 103A has received the detection signal 151 (or information indicating whether the received radio wave intensity is equal to or greater than a predetermined threshold). The position 104 may be detected. That is, the position information generating unit 143 may not use the received radio wave intensity information 165. For example, the position information may be information indicating the receiver 103A that has received the detection signal 151.

  In addition, the position information generation unit 143 may not use the position information of the receiver 103A. For example, when a staff member who carries the receiver 103A (for example, a smartphone) is in a building, position measurement using GPS cannot be performed. In such a case, or when the receiver 103A does not include the position measurement unit 123, the position information generation unit 143 indicates whether or not the detection signal 151 can be received by each receiver 103A as the position information. Only information may be generated, or only information indicating the receiver 103A that has received the detection signal 151 may be generated. As described above, the position information generation unit 143 generates information for detecting the position of the transmitter 104 based on the notification signal 153.

  Hereinafter, the operation of the transmitter 104 will be described. FIG. 12 is a flowchart showing an operation flow of the transmitter 104.

  First, the transmitter 104 transmits the detection signal 151 at a predetermined cycle in the normal operation mode (S121). Next, the transmitter 104 determines whether or not the confirmation signal 152 indicating that the transmitted detection signal 151 has been received by the receiver 103A has been received (S122). For example, the transmitter 104 determines that it has not received the confirmation signal 152 when it has not received the confirmation signal 152 for a predetermined time.

  When the transmitter 104 receives the confirmation signal 152 (Yes in S122), the transmitter 104 returns to Step S121. On the other hand, when the switching mode is set to the normal switching mode (Yes in S123) and the confirmation signal 152 has not been received (No in S122), the transmitter 104 shifts from the normal operation mode to the specific mode ( S124). When the switching mode is set to the non-switchable mode (No in S123), the transmitter 104 does not change the operation mode regardless of whether the confirmation signal 152 is received.

  Next, the transmitter 104 transmits the detection signal 151 at a predetermined cycle in the specific mode (S125). Specifically, the transmitter 104 transmits a detection signal 151 including information (specific flag 163A) indicating that the transmitter 104 is a specific transmitter.

  Thereafter, the transmitter 104 transmits the detection signal 151 until the end of the specific mode is instructed (S126). Note that the end of the specific mode is instructed by an operation of an operation unit (a button or a switch) provided in the transmitter 104, for example. Note that the end of the specific mode may be performed based on an instruction from another device via wireless or wired communication.

  Next, the operation of the receiver 103A will be described. FIG. 13 is a flowchart showing an operation flow of the receiver 103A.

  When receiving the detection signal 151 (Yes in S131), the receiver 103A determines whether the transmitter 104 that is the transmission source of the detection signal 151 belongs to the same group as the receiver 103A (S132). When the sender's transmitter 104 belongs to the same group as the receiver 103A (Yes in S132), the receiver 103A transmits a confirmation signal 152 to the transmitter 104 (S134) and also sends a notification signal 153 to the management device. 102 (S135).

  On the other hand, when the transmitter 104 of the transmission source belongs to a group different from the receiver 103A (No in S132) and is not a specific transmitter (No in S133), the receiver 103A does not perform processing. Further, when the transmitter 104 of the transmission source belongs to a group different from the receiver 103A (No in S132) and is a specific transmitter (Yes in S133), the receiver 103A sends the notification signal 153 to the management device. It transmits to 102 (S135).

  When the receiver 103A receives the detection signal 151, the confirmation signal 152 is immediately transmitted. However, when the management apparatus 102 receives the notification signal 153, the first confirmation signal is received from the management apparatus 102. When the first confirmation signal is received, the receiver 103 </ b> A may transmit the confirmation signal 152 to the transmitter 104.

  As described above, when the transmitter 104 exists in the management range 106, the information of the detection signals 151 received by the plurality of receivers 103A is transmitted to the management apparatus 102. The management apparatus 102 can detect the position of the transmitter 104 using the received information.

  In addition, since processing is performed only for the transmitters 104 or specific transmitters in the same group and processing is not performed for the transmitters 104 other than these, the processing amount and the communication data amount can be reduced.

  Further, the transmitter 104 shifts to the specific mode when the confirmation signal 152 cannot be received. Thereby, when the transmitter 104 goes out of the management range 106, the transmitter 104 can be automatically shifted to the specific mode.

  In addition, by providing the non-switchable mode, the transition to the specific mode can be prohibited. For example, each patient at a facility has a transmitter 104. At this time, all the transmitters 104 are set to the normal switching mode. On the other hand, the switching mode is set to the non-switchable mode when the patient accompanied by a family member or the staff goes out. By using in this way, when the patient unintentionally goes out of the facility (out of the detection range), the operation mode of the transmitter 104 is switched to the specific mode. Thereby, the position of the patient who has gone out of the detection range can be detected by another group of devices. On the other hand, an increase in unnecessary processing can be suppressed by setting the switching mode to the non-switchable mode when intentionally going out.

  The switching mode may be set according to the patient's condition (presence / absence of the possibility of wrinkles) or may be set according to the intended use. For example, when used in an amusement park or a theme park, the switching mode may be set to a non-switchable mode.

  Further, the transmitter 104 does not have a switching mode, and may operate fixedly in either the normal switching mode or the non-switchable mode.

  Although an example in which the mode is automatically shifted to the specific mode based on the confirmation signal 152 has been described here, some of the plurality of transmitters 104 may always operate in the specific mode.

  Further, the operation mode may be changed when an operation unit (button or switch or the like) provided in the transmitter 104 is operated. Alternatively, the operation mode may be changed based on an instruction from another device via wireless or wired communication.

  Further, after the operation mode is set to the normal operation mode, the operation mode may be automatically switched to the specific mode after a predetermined time has elapsed. Further, such a process of automatically switching the mode after a predetermined time has elapsed may be applied to the switching mode.

  Next, an operation when the transmitter 104 leaves the management range 106 will be described. FIG. 14 is a diagram showing the operation of the mobile object search system 100 in this case. The switching mode of the transmitter 104 is set to the normal switching mode.

  When the transmitter 104 leaves the management range 106, the detection signal 151 is not received by any of the receivers 103A. As a result, the transmitter 104 cannot receive the confirmation signal 152 from any of the receivers 103A even after a predetermined time has elapsed, so the operation mode is shifted from the normal operation mode to the specific mode (S111).

  Thereafter, the transmitter 104 periodically transmits the detection signal 151 (S112). Here, when the operation mode is switched to the specific mode, the detection signal 151 includes a specific flag 163A indicating that the transmitter 104 of the transmission source is a specific transmitter.

  The receiver 103B that has received the detection signal 151 indicates that it has received the detection signal 151 because the received detection signal 151 includes a specific flag 163A indicating that the transmitter 104 is a specific transmitter. The received reception information 171 is accumulated (S113).

  FIG. 15 is a diagram illustrating an example of reception information 171 stored in the receiver 103B. As shown in FIG. 15, the reception information 171 includes a plurality of entries 181. Each entry 181 indicates information of the detection signal 151 received at a certain time. Each entry 181 includes a reception time 182, a transmitter ID 161 </ b> D, a group ID 162 </ b> D, a specific flag 163 </ b> D, and received radio wave intensity information 165 </ b> D.

  The reception time 182 indicates the time when the receiver 103B receives the detection signal 151. The transmitter ID 161D and the group ID 162D indicate the transmitter 104 that is the transmission source of the detection signal 151. For example, the transmitter ID 161D and the group ID 162D are the same IDs as the transmitter ID 161A and the group ID 162A included in the detection signal 151.

  The specific flag 163D indicates whether the operation mode of the transmitter 104 that is the transmission source of the detection signal 151 is the specific mode or the normal operation mode. For example, the specific flag 163D is the same flag as the specific flag 163A included in the detection signal 151.

  The received radio wave intensity information 165D indicates the received radio wave intensity of the detection signal 151 received by the receiver 103B.

  FIG. 16 is a flowchart illustrating an example of the operation flow of the receiver 103B. When the receiver 103B receives the detection signal 151 (Yes in S141), the transmitter 104 that is the transmission source of the detection signal 151 indicates the specific group indicated by the specific group ID 172 held in the group ID storage unit 127. (S142). Here, the specific group ID 172 is operated by, for example, an operation unit (button or switch or the like) provided in the receiver 103B, or from an external device (for example, the acquisition device 105) via the short-range communication unit 129. It is set in advance based on the operation.

  When the transmission source transmitter 104 belongs to a specific group (Yes in S142), the receiver 103B adds the information of the received detection signal 151 to the reception information 171 and stores it (S144). The alarm unit 130 issues an alarm by light or sound (S145).

  On the other hand, when the transmitter 104 of the transmission source does not belong to the specific group (No in S142) and is not a specific transmitter (No in S143), the receiver 103B does not store the information of the received detection signal 151. Further, when the transmitter 104 of the transmission source does not belong to a specific group (No in S142) and is a specific transmitter (Yes in S143), the receiver 103B receives the received detection signal 151 in the reception information 171. Is added and stored (S144). The alarm unit 130 issues an alarm by light or sound (S145).

  That is, when the transmitter 104 that is the transmission source of the detection signal 151 belongs to a specific group or is a specific transmitter, the receiver 103B stores the reception information 171 and issues an alarm.

  Note that the operation example shown here is merely an example, and the receiver 103 </ b> B may perform any of the following to determine whether to store the reception information 171.

  For example, the receiver 103B may store all reception information 171.

  Further, the receiver 103B may perform only one of the determination as to whether it belongs to a specific group (S142) and the determination as to whether it belongs to a specific transmitter (S143).

  Further, instead of determining whether or not the receiver 103B belongs to the specific group (S142), or in addition to the determination, the receiver 103B determines whether or not the transmission source transmitter 104 is the same as the group to which the receiver 103B belongs. May be. That is, the receiver 103B may store the reception information 171 when the transmission source transmitter 104 belongs to a group different from the group to which the receiver 103B belongs.

  Alternatively, the receiver 103B may store the reception information 171 when the transmission source transmitter 104 belongs to the same group as the group to which the receiver 103B belongs. Further, this determination may be made by matching or mismatching of higher-order IDs among IDs set hierarchically as shown in FIG. For example, only the reception information 171 of the transmitter 104 belonging to the same prefecture and city may be stored by the group ID.

  A specific transmitter (transmitter ID) may be set instead of the specific group.

  Further, the reception information 171 may be stored when any of the above conditions is satisfied, or the reception information 171 may be stored only when all of the two or more conditions are satisfied.

  Moreover, the conditions similar to those described above can be used as conditions for issuing an alarm. The condition for storing the reception information 171 and the condition for issuing an alarm are not necessarily the same. For example, a combination of different conditions may be used such that all reception information 171 is stored and an alarm is issued only when the transmitter 104 of the transmission source is a specific transmitter.

  In step S144, when there is no empty entry 181, the receiver 103B deletes data of any entry 181 and writes new data to the deleted entry 181. For example, the receiver 103 </ b> B may delete data other than the special receiver (specific flag 163 </ b> D is “1”) preferentially, or delete data other than the specific group in order from the oldest data. The priority may be deleted, the priority may be determined based on whether or not the group of the transmitter 104 and the receiver 103B is the same, or these conditions may be combined.

  The data deletion may be performed when a predetermined time has elapsed from the time of storage, or may be performed when reception information is collected by the acquisition unit 105.

  As described above, the transmitter 104 wirelessly transmits the detection signal 151 including specific information indicating whether the transmitter 104 is a specific transmitter or a normal transmitter other than the specific transmitter. Here, the specific information refers to a specific flag 163A indicating whether the transmitter 104 is a specific transmitter that is out of a predetermined management range 106 or a normal transmitter other than the specific transmitter, or transmission. The group ID 162A indicates the group to which the device 104 belongs.

  Further, the receiver 103B, based on the specific information, receives normal detection information that is reception information 171 indicating that the detection signal 151 transmitted from the normal transmitter has been received, and a detection signal transmitted from the specific transmitter. Among the specific reception information which is the reception information 171 indicating that 151 is received, the specific reception information is preferentially stored. Specifically, the specific transmitter is the transmitter 104 indicated by the specific flag 163A as having exited the management range 106 or the transmitter 104 having the group ID 162A indicated by the specific group ID 172. Further, preferentially storing means that only specific reception information is stored as described above, or specific reception information is preferentially left (other than specific reception information is preferentially deleted).

  The description will be continued with reference to FIG. Here, if any of the receivers 103A installed in the management range 106 does not receive the detection signal 151 for a predetermined period, the management device 102 issues a warning. As a result, the monitor determines that the monitored person possessing the transmitter 104 has left the management range 106 and starts searching for the monitored person. Specifically, the supervisor moves toward one of the receivers 103 </ b> B while holding the acquisition device 105.

  At this time, as described above, the receiver 103B receiving the detection signal 151 from the specific transmitter 104 issues a warning. Therefore, the supervisor can determine whether there is valid data in the receiver 103B from a relatively distant position. In addition to the case where the search is explicitly performed as described above, a monitor who performs a patrol patrol or the like can easily detect the occurrence of the above by visually observing the receiver 103B.

  When the acquisition unit 105 and the receiver 103B come close to each other, the acquisition unit 105 transmits a reception request 154 to the receiver 103B (S114). For example, the reception request 154 is transmitted triggered by an operation on the acquisition unit 105 by the user. Note that the acquisition unit 105 may periodically transmit the reception request 154, or may periodically transmit a polling signal and may transmit the reception request 154 when there is a reply from the receiver 103B. Good. Alternatively, the reception request 154 may be transmitted when the receiver 103B periodically transmits a signal and the acquisition unit 105 receives the signal.

  The receiver 103B that has received the reception request 154 transmits a reception information signal 155 to the acquisition unit 105 (S115). The acquisition unit 105 transmits the received reception information signal 155 to the management apparatus 102 as a reception information signal 156 (S116).

  The management apparatus 102 generates position information indicating the position of the transmitter 104 using the received reception information signal 156 (S117).

  FIG. 17 is a flowchart of processing performed by the receiver 103B regarding transmission of the reception information signal 155. When receiving the reception request 154 (Yes in S151), the receiver 103B extracts necessary information from the stored reception information 171 and generates a reception information signal 155 including the extracted information (S152). Specifically, the receiver 103B extracts information on the condition of at least one of the reception time 182, the transmitter ID 161D, the group ID 162D, and the specific flag 163D. For example, this condition may be set in advance in the receiver 103B, or may be included in the reception request 154.

  Note that the receiver 103B may generate a reception information signal 155 including all of the stored reception information 171.

  Next, the receiver 103B transmits the generated reception information signal 155 to the acquisition unit 105 (S153).

  FIG. 18 is a diagram illustrating a configuration example of the reception information signal 155. As illustrated in FIG. 18, the reception information signal 155 includes reception information 191 that is a part or all of the reception information 171, a receiver ID 164 </ b> D, and receiver position information 166 </ b> D.

  The receiver ID 164D is the receiver 103B that has received the detection signal 151, and indicates the receiver 103B that is the transmission source of the reception information signal 155.

  The receiver position information 166D indicates the current position of the receiver 103B. For example, the receiver position information 166D is position information of the receiver 103B measured by the GPS or the like included in the receiver 103B. The receiver position information 166D is not necessarily included in the reception information signal 155.

  FIG. 14 shows an example in which the reception information 171 of one receiver 103B is acquired. However, the reception information 171 of a plurality of receivers 103B is acquired by one or more acquisition devices 105, and a plurality of reception information is acquired. A signal 156 is transmitted to the management apparatus 102.

  In the above description, when the acquisition unit 105 receives the reception information signal 155 from the receiver 103B, the acquisition unit 105 transmits the reception information signal 156 to the management apparatus 102. However, the acquisition unit 105 receives a plurality of reception information signals 156 from the plurality of receivers 103B. The reception information signal 155 may be accumulated, and may be collectively transmitted to the management apparatus 102 at an arbitrary timing. Further, data may be transmitted via a recording medium such as an SD card.

  The acquisition unit 105 may include a position measurement unit such as a GPS. In this case, when the acquisition unit 105 acquires the reception information signal 155 from the receiver 103B, the reception information signal including the position information of the receiver 103B is set with the current position of the acquisition unit 105 as the position of the receiver 103B. 156 may be transmitted to the management apparatus 102. Thereby, even when the receiver 103B does not include a position measurement unit, the position of the receiver 103B can be measured.

  FIG. 19 is a diagram illustrating an example of position information generated by the management apparatus 102. The position information generation unit 143 generates position information using a plurality of reception information signals 156. The display unit 144 estimates and displays the position of the transmitter 104 detected by the position information generation unit 143. The outline of the position information generation method is the same as the position information generation method using the notification signal 153.

  For example, as illustrated in FIG. 19, the management apparatus 102 estimates an estimated range 193 that is a range where the transmitter 104 is likely to exist, and displays the estimated range 193. The display unit 144 also estimates the locus 192 that the transmitter 104 has moved, and displays the locus 192.

  In addition, the management apparatus 102 displays symbols 191A to 191C indicating the receiver 103B. At this time, as shown in FIG. 19, the received information 171 is acquired within a predetermined time, and the detection signal 151 from the target transmitter 104 is received, and the symbol 191A of the receiver 103A is received within the predetermined time. The reception information 171 is acquired at the same time, and the symbol 191B of the receiver 103A from which the detection signal 151 from the target transmitter 104 has not been received, and the receiver 103A from which the reception information 171 has not been acquired within a predetermined time. The symbol 191C may be shown in a different form.

  In addition, the management apparatus 102 transmits the transmitter 104 based on the reception radio wave intensity and reception time of the detection signal 151 and the position information of the receiver 103B in the plurality of receivers 103B indicated by the plurality of reception information signals 156. Current position and locus can be estimated.

  The above information may be displayed so as to be superimposed on the map information. In addition, here, an example in which the position of the transmitter 104 is displayed two-dimensionally is shown, but three-dimensional display may be performed.

  Further, the position information may include information other than the above. For example, the received radio wave intensity or the reception time at each receiver 103B may be displayed. Moreover, the moving speed of the transmitter 104 may be displayed. In addition, the received radio wave intensity at each receiver 103B (103A) may be displayed in time series, or a change in the received radio wave intensity may be displayed. Moreover, the result of estimating the position of the child device may be displayed in time series. Moreover, the said state of the designated time or time slot | zone may be displayed by designating time.

  In the above description, an example in which a plurality of receivers 103A having a wide-area communication function are arranged in the management range 106 and a plurality of receivers 103B having no wide-area communication function is arranged outside the management range 106 has been described. However, the receiver 103 </ b> B may be disposed within the management range 106, or the receiver 103 </ b> A may be disposed outside the management range 106. For example, the receiver 103A may be disposed in an area outside the management range 106 and in the vicinity of the management range 106, and the receiver 103B may be disposed in an area away from the management range 106.

  In the above description, only the specific flag 163A included in the detection signal 151 is changed between the normal operation mode and the specific mode. However, in addition to the change, the transmission operation of the detection signal 151 may be changed. . For example, the transmission interval of the detection signal 151 in the specific mode may be shorter than the transmission interval of the detection signal 151 in the normal operation mode. Thereby, the position of the transmitter 104 can be detected with higher accuracy in the specific mode. Alternatively, the transmission interval of the detection signal 151 in the specific mode may be longer than the transmission interval of the detection signal 151 in the normal operation mode. Thereby, since power consumption can be reduced in the specific mode, battery consumption can be reduced.

  Further, the transmission radio wave intensity of the detection signal 151 in the specific mode may be stronger than the transmission radio wave intensity of the detection signal 151 in the normal operation mode. Further, different modulation schemes may be used for the detection signal 151 in the normal operation mode and the specific mode.

  In the above description, an example in which the management range 106 or group is set has been described, but it is not always necessary to set these. Further, it is not always necessary to switch the specific mode using the specific flag.

  As described above, in mobile object search system 100 according to the present embodiment, reception information stored in receiver 103B is collected by acquisition unit 105. Thereby, since the receiver 103B does not need to have a wide area communication function, the cost of the receiver 103B can be reduced. As a result, when a plurality of receivers are used to widen the detection range, the cost of the entire system can be greatly reduced. In addition, since the power consumption when the battery is driven can be reduced, there is an effect that the driving time of the receiver can be extended.

  As a result, it is possible to preferentially store the reception information 171 such as a deceased person who needs special monitoring. Thereby, the memory capacity of the receiver 103B can be reduced, and the processing amount of the receiver 103B can be reduced.

  Hereinafter, an operation example of the mobile body search system 100 when a drone is used will be described. For example, the drone incorporates the acquisition device 105 described above, and when the transmitter 104 leaves the management range 106 or periodically, it flies on a predetermined route that circulates the plurality of receivers 104B. . Further, the drone has a camera (imaging unit), and when the drone approaches the receiver 104B, the receiver 104B is photographed, and based on the photographed image, it is determined whether an alarm is issued from the receiver 104B. To do. For example, as a warning, the light emitting unit emits light in a predetermined pattern, and the drone detects the light emission pattern. When the alarm is issued, the drone is closer to the receiver 104B, acquires the reception information signal 155 from the receiver 104B, and transmits the acquired reception information signal 155 to the management apparatus 102 as the reception information signal 156. To do. With the above operation, reception information of a plurality of receivers 104B can be collected quickly.

  A plurality of drones may be used for collecting the received information. In addition, a video captured by the drone may be transmitted to the management apparatus 102, and the presence or absence of an alarm may be determined by a supervisor who uses the management apparatus 102. Alternatively, an image captured by the drone or information indicating the presence / absence of an alarm determined by the drone is transmitted to the management device 102, and based on these, an alarm is issued in a state where the monitor has the acquisition device 105. The reception information may be collected by going to the receiver 104B.

  The drone may have the function of the receiver 103A or 103B (the function of receiving the detection signal 151) in addition to the acquisition unit 105. Thereby, since the transmitter 104 can be detected simultaneously with the collection of received information, the accuracy of the search can be improved.

  Moreover, although the example which searches a deaf person was described here, this invention can be used also for search of a victim etc. Further, the present invention can be used for pest countermeasures and the like.

  The mobile object search system according to the embodiment of the present invention has been described above, but the present invention is not limited to this embodiment.

  For example, each processing unit included in each device included in the mobile search system according to the above embodiment is typically realized as an LSI that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them.

  Further, the circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. An FPGA (Field Programmable Gate Array) that can be programmed after manufacturing the LSI or a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.

  Moreover, you may implement | achieve part or all of the function of each apparatus contained in the mobile search system which concerns on the said embodiment, when processors, such as CPU, run a program.

  Furthermore, the present invention may be the above program or a non-transitory computer-readable recording medium on which the above program is recorded. Needless to say, the program can be distributed via a transmission medium such as the Internet.

  In addition, the present invention can be realized not only as a mobile search system, but also as a transmitter, receiver, acquisition device, or management device included in the mobile search system. Further, the present invention can be realized as a mobile search method using steps as characteristic means included in such a mobile search system, or as a program for causing a computer to execute such characteristic steps. You can also

  Moreover, all the numbers used above are illustrated for specifically explaining the present invention, and the present invention is not limited to the illustrated numbers.

  In addition, division of functional blocks in the block diagram is an example, and a plurality of functional blocks can be realized as one functional block, a single functional block can be divided into a plurality of functions, or some functions can be transferred to other functional blocks. May be. In addition, functions of a plurality of functional blocks having similar functions may be processed in parallel or time-division by a single hardware or software.

  In addition, the order in which the steps shown in the flowchart are executed is for the purpose of illustrating the present invention specifically, and may be in an order other than the above. Also, some of the above steps may be executed simultaneously (in parallel) with other steps.

  As mentioned above, although the mobile search system which concerns on the one or some aspect was demonstrated based on embodiment, this invention is not limited to this embodiment. Unless it deviates from the gist of the present invention, various modifications conceived by those skilled in the art have been made in this embodiment, and forms constructed by combining components in different embodiments are also within the scope of one or more aspects. May be included.

  The present invention can be applied to a mobile search system.

DESCRIPTION OF SYMBOLS 100 Mobile body search system 102 Management apparatus 103A, 103B Receiver 104 Transmitter 105 Acquirer 106 Management range 111, 126 Wireless transmission part 112, 121 Wireless reception part 113 Switching mode setting part 114 Specific mode setting part 115 Transmitter ID storage part 116 Transmission Control Unit 117 Power Supply Unit 122 Reception Strength Measurement Unit 123 Position Measurement Unit 124, 124A Signal Generation Unit 125, 136, 141 Communication Unit 127, 127A Group ID Storage Unit 128 Reception Information Storage Unit 129, 135 Near Field Communication Unit 130 Alarm Unit 142 receiver position storage unit 143 position information generation unit 144 display unit 151 detection signal 152 confirmation signal 153 notification signal 154 reception request 155, 156 reception information signal 161A, 161B, 161D transmitter ID
162A, 162B, 162C, 162D, 162E Group ID
163A, 163B, 163D Specific flag 164, 164D Receiver ID
165, 165D Received signal strength information 166, 166D Receiver position information 171, 191 Receive information 172 Specific group ID
181 Entry 182 Reception time 191A, 191B, 191C Symbol 192 Trajectory 193 Estimated range

Claims (8)

A mobile search system for searching for a first mobile,
A transmitter that is held by the first moving body and wirelessly transmits a detection signal;
A receiver for receiving the detection signal;
An acquirer held by the second moving body,
When the receiver receives the detection signal, the receiver accumulates reception information indicating that the detection signal has been received,
The acquisition unit acquires the reception information from the receiver when approaching the receiver;
The mobile search system generates information for searching for the first mobile using the reception information acquired by the acquisition unit. The mobile search system according to claim 1, wherein the acquisition unit acquires the reception information from the receiver by using wireless communication when approaching the receiver. The transmitter wirelessly transmits the detection signal including specific information indicating whether the transmitter is a specific transmitter or a normal transmitter other than the specific transmitter,
The receiver is based on the specific information, the normal reception information that is the reception information indicating that the detection signal transmitted from the normal transmitter is received, and the detection information transmitted from the specific transmitter. The mobile search system according to claim 1 or 2, wherein the specific reception information is preferentially stored among the specific reception information that is the reception information indicating that a signal has been received. The mobile search system according to claim 3, wherein the receiver issues an alarm by light or sound when receiving the detection signal transmitted from the specific transmitter. The specific information is a specific flag indicating whether the transmitter is the specific transmitter that has come out of a predetermined management range or the normal transmitter other than the specific transmitter. 4. The mobile search system according to 4. The transmitter belongs to one of a plurality of groups;
The specific information is a group identifier indicating a group to which the transmitter belongs,
In the receiver, a group to be detected is set,
The mobile search system according to claim 3 or 4, wherein the specific transmitter is a transmitter belonging to the group to be detected. The mobile body search system according to any one of claims 1 to 6, wherein the second mobile body is a drone. A mobile object search method in a mobile object search system for searching for a mobile object, comprising:
The mobile object search system includes:
A transmitter that is held by the first moving body and wirelessly transmits a detection signal;
A receiver for receiving the detection signal;
An acquirer held by the second moving body,
When the receiver receives the detection signal, an accumulation step of accumulating reception information indicating that the detection signal has been received;
An acquisition step of acquiring the reception information from the receiver when the acquisition device is in proximity to the receiver;
A generating step for generating information for searching for the first moving body using the received information acquired by the acquiring unit;

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