Notification system and notification program

Abstract

To provide a notification system and a notification program capable of transmitting notification information to a manager terminal even when a terminal to be managed cannot perform communication.SOLUTION: A base station server 1, a managed terminal 2, and a manager terminal 3, in which the base station server 1 includes a server communication unit, the managed terminal 2 includes a position information acquisition unit that acquires position information of the managed terminal 2 from a positioning satellite S and a managed terminal communication unit, the manager terminal 3 includes a notification unit and a manager terminal communication unit, and the server communication unit can perform bidirectional wireless communication with the managed terminal communication unit and the manager terminal communication unit, the server communication unit communicates with the managed terminal communication unit at predetermined intervals to acquire position information, and when communication between the server communication unit and the managed terminal communication unit is disabled, the server communication unit transmits notification information and the most recently acquired position information to the manager terminal communication unit, and when the manager terminal communication unit receives the notification information and the position information, the notification means notifies the notification information and the position information.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a notification system and a notification program for transmitting a notification from a base station to an administrator terminal when a communication outage of a managed terminal is detected. [Background technology]

[0002] Conventionally, a mobile terminal with a security buzzer function has been known (see, for example, Patent Document 1). The mobile terminal (1) with a security buzzer function described in Patent Document 1 is equipped with a security strap (10), and when a user pulls the security strap (10), a security switch inside the mobile terminal (1) with a security buzzer function is turned on, and the security buzzer (302) starts to ring.

[0003] In addition, while the security buzzer (302) is sounding, it is possible to make a call or send a text message between the mobile terminal (1) with the security buzzer function and a communication partner device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-129778 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when a user carrying the mobile terminal (1) with the security alarm function encounters a problem and is able to pull the security strap (10), the security alarm (302) starts ringing and the user can make a call or send a text message to the communication partner device. However, if the user faints or is unable to pull the security strap (10), or if the user falls into a river or waterway and the mobile terminal (1) with the security alarm function is submerged, making it impossible to communicate with the communication partner device, the security alarm (302) and communication functions cannot be used, and it is not possible to notify others of an emergency.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the above problems and to provide a notification system and a notification program that are capable of transmitting notification information to an administrator terminal even when a managed terminal becomes unable to communicate. [Means for solving the problem]

[0007] The notification system of the present invention comprises a server device, a managed terminal, and an administrator terminal, wherein the server device has a server communication unit, the managed terminal has a location information acquisition unit that acquires location information of the managed terminal from a positioning satellite, and a managed terminal communication unit, the administrator terminal has a notification means and an administrator terminal communication unit, the server communication unit is capable of two-way wireless communication with the managed terminal communication unit and the administrator terminal communication unit, the server communication unit communicates with the managed terminal communication unit at predetermined intervals to acquire the location information, and when communication between the server communication unit and the managed terminal communication unit becomes impossible, the server communication unit transmits notification information and the most recently acquired location information to the administrator terminal communication unit, and when the administrator terminal communication unit receives the notification information and the location information, the notification means notifies the notification information and the location information.

[0008] The notification program of the present invention is characterized in that it causes a server device to function as a communication unit that receives various information via wireless communication, a judgment unit that judges whether or not a notification is necessary based on the information, and a communication control unit that controls the communication unit to transmit notification information based on the judgment of the judgment unit regarding notification. [Effects of the Invention]

[0009] According to the notification system of the present invention, even if communication between the server device and the managed terminal becomes impossible, notification information can be transmitted from the server device to the administrator terminal.

[0010] According to the notification program of the present invention, even if communication between the server device and the managed terminal becomes impossible, notification information can be transmitted from the server device to the administrator terminal. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a diagram illustrating a configuration of a notification system according to an embodiment of the present invention. [Figure 2] FIG. 2 is a block diagram showing the electrical configuration of the base station server of the embodiment. [Figure 3] FIG. 2 is a block diagram showing the electrical configuration of a managed terminal according to the embodiment. [Figure 4] FIG. 2 is a block diagram showing the electrical configuration of the administrator terminal of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Note that not all of the configurations described below are essential requirements for the present invention.

[0013] Fig. 1 shows the configuration of a notification system according to the present invention. The notification system of this embodiment is configured to include a base station server 1, a managed terminal 2, and an administrator terminal 3. The base station server 1 and the managed terminal 2 are connected via the Internet, and are able to transmit and receive various information to and from each other via two-way wireless communication. The base station server 1 and the administrator terminal 3 are also connected via the Internet, and are able to transmit and receive various information to and from each other via two-way wireless communication. For example, communication standards such as Bluetooth (registered trademark), LTE (Long Term Evolution), 4G (fourth generation mobile communication system), and 5G (fifth generation mobile communication system) can be used as the wireless communication method.

[0014] The base station server 1 is managed by a service provider that provides the notification system, the managed terminal 2 is carried by a managed person who needs to be watched over, such as a child or elderly person, and the manager terminal 3 is held by a manager who is, for example, a guardian or family member of the child or elderly person who carries the managed terminal 2.

[0015] As shown in FIG. 2, the base station server 1, which is a server device, includes a control means 4, a storage unit 5, a communication unit 6, and an operation unit .

[0016] The control means 4 includes a CPU (Central Processing Unit) and controls the entire base station server 1 based on a program stored in the storage unit 5. The CPU executes arithmetic processing in accordance with the program, thereby realizing each function of the base station server 1.

[0017] The control means 4 has a communication control unit 8 that controls the communication unit 6, and a notification determination unit 9. Details of the communication control unit 8 and the notification determination unit 9 will be described later.

[0018] The storage unit 5 is configured using various storage devices such as a magnetic hard disk drive, a semiconductor storage device, etc. Therefore, various information received by the communication unit 6 from the managed terminal 2 can be written and read.

[0019] The terminal ID of the managed terminal 2 to be used is registered in advance by operating the operation unit 7, and therefore, identification information for identifying the managed terminal 2 is stored in the storage unit 5. Therefore, even when multiple managed terminals 2 are used, it is possible to identify which managed terminal 2 is being communicated with. The storage unit 5 also stores terminal information of the administrator terminal 3 linked to the managed terminal 2.

[0020] The memory unit 5 stores map information. Specific areas, such as safe areas and danger areas, can be set in the map information, and the safe area information and danger area information are stored in the memory unit 5 together with the map information. The safe areas and danger areas can be set by operating the operation unit 7, and the settings can also be changed or canceled, and the updated area information is stored in the memory unit 5. For example, facilities such as parks and libraries can be set as safe areas, and areas where accidents are likely to occur, such as rivers, waterways, reservoirs, railroad crossings, main roads, construction sites, and areas where wild animals are found, can be set as danger areas.

[0021] The communication unit 6, which is a server communication unit, enables two-way wireless communication with the managed terminal 2 and the administrator terminal 3 via the above-mentioned Internet communication means. Therefore, the base station server 1 can send and receive data including various information between the managed terminal 2 and the administrator terminal 3.

[0022] The operation unit 7 is a keyboard, and can be used to perform input operations to the base station server 1. The operation unit 7 may also be equipped with other operation means such as a mouse.

[0023] 1 and 3, the managed terminal 2 is lightweight and compact, and can be attached to the clothing of the managed person, for example. The managed terminal 2 has a control unit 11, a location information acquisition unit 12, an inertial sensor 13, a battery 14, a power detection unit 15, a communication unit 16, a timer unit 17, a memory unit 18, an SOS button 19, and a speaker 20.

[0024] The control unit 11 includes a CPU (Central Processing Unit) and controls the entire managed terminal 2 based on a program stored in the storage unit 18. The CPU executes arithmetic processing in accordance with the program, thereby realizing each function of the managed terminal 2.

[0025] The location information acquisition unit 12 acquires location information of the managed terminal 2 from multiple positioning satellites S. The location information is acquired at predetermined intervals (one minute intervals in this embodiment), and the acquired location information is stored in the storage unit 18 together with acquisition time information, which is information about the time when the location information was acquired. Note that the time interval for acquiring the location information may be other than one minute, and any desired time interval can be set.

[0026] The inertial sensor 13 includes an acceleration sensor (not shown) and a gyro sensor (not shown), and constantly detects the acceleration and angular velocity of the managed terminal 2. The acceleration information and angular velocity information detected by the inertial sensor 13 are stored in the memory unit 18 together with the detection time.

[0027] The battery 14 is a driving power source for the managed terminal 2 and can be repeatedly discharged and charged.

[0028] The power amount detection unit 15 detects the amount of stored power (remaining power) of the battery 14. The amount of stored power (remaining power) is detected at predetermined intervals (one minute intervals in this embodiment), and the detected information on the amount of stored power is stored in the storage unit 18 together with detection time information, which is information on the time when the amount of stored power (remaining power) of the battery 14 is detected.

[0029] The communication unit 16, which is a managed terminal communication unit, enables two-way wireless communication with the base station server 1 using the above-mentioned Internet communication method. Therefore, the managed terminal 2 can send and receive data including various information to and from the base station server 1.

[0030] An atomic clock is installed on the positioning satellite S. This positioning satellite S transmits an extremely accurate time signal wave at a specific frequency, which is received by the position information acquisition unit 12 together with the position information, thereby defining the time axis of the timing unit 17. Based on the time axis of the timing unit 17, the time when the position information was acquired, the time when the acceleration and angular velocity were detected, and the time when the amount of stored power (remaining charge) was detected are identified.

[0031] The storage unit 18 is configured with a semiconductor memory or the like, and is capable of writing and reading various information.

[0032] The SOS button 19 is a push button that, when pressed by a person under management who carries the managed terminal 2 in an emergency, causes a warning sound to be emitted from a speaker 20, which is the warning means of the managed terminal 2. When the SOS button 19 is pressed, an emergency signal (including time information about the time the SOS button 19 was pressed) is transmitted to the base station server 1 by the communication unit 16. When the communication unit 6 receives the emergency signal, the communication control unit 8 controls the communication unit 6 to transmit warning information (including time information about the time the SOS button 19 was pressed) to the administrator terminal 3 notifying that the SOS button 19 has been pressed. At this time, the latest location information of the managed terminal 2 (including acquisition time information) received from the managed terminal 2 is transmitted to the administrator terminal 3 together with map information. When the communication unit 25 of the administrator terminal 3 receives the notification information, location information, and map information, the display unit 22 displays the notification information that communication with the managed terminal 2 is not possible and the location information of the managed terminal 2 on the map, and an alarm sound is emitted from the speaker 24. The administrator who owns the administrator terminal 3 and has confirmed the display of the notification information that the SOS button 19 has been pressed can search for the managed person carrying the managed terminal 2 by relying on the latest location information of the managed terminal 2 on the map.

[0033] As shown in Figures 1 and 4, the administrator terminal 3 has a control unit 21, a display unit 22, an operation unit 23, a speaker 24, a communication unit 25, and a memory unit 26, and can be realized, for example, by a smartphone or a tablet terminal.

[0034] The control unit 21 includes a CPU (Central Processing Unit) and controls the entire administrator terminal 3 based on a program stored in the storage unit 26. The CPU executes arithmetic processing in accordance with the program, thereby realizing each function of the administrator terminal 3.

[0035] When the display unit 22 receives various information data from the base station server 1, it is capable of displaying matters relating to the information data using characters, images, moving images, and the like.

[0036] The operation unit 23 has push-button type operation buttons 27 and a touch panel type operation panel 28. The administrator can perform input operations on the administrator terminal 3 using the operation buttons 27 and the operation panel 28.

[0037] The speaker 24, which is a notification means, emits a sound when notification information is received from the base station server 1. When the administrator terminal 3 receives notification information, it displays the notification information on the display unit 22, so the display unit 22 also functions as a notification means.

[0038] The communication unit 25, which is the administrator terminal communication unit, enables two-way wireless communication with the base station server 1 using the above-mentioned Internet communication method. Therefore, the administrator terminal 3 can send and receive data including various information to and from the base station server 1.

[0039] The storage unit 26 is configured with a semiconductor memory or the like, and is capable of writing and reading various information.

[0040] Here, a method for implementing the notification system according to this embodiment will be described. The communication control unit 8 of the base station server 1 controls the communication unit 6 so that it communicates with the communication unit 16 of the managed terminal 2 at predetermined intervals (one minute intervals in this embodiment). The content of the communication includes acquisition of location information (including acquisition time information) of the managed terminal 2, acquisition of whether the managed terminal 2 is moving and speed information (including detection time information), acquisition of information on the amount of stored power (remaining power) in the battery of the managed terminal 2 (including detection time information), etc. Each piece of information acquired from the managed terminal 2 is stored in the storage unit 5. Note that the predetermined interval at which the communication control unit 8 controls the communication unit 6 to communicate with the managed terminal 2 does not have to be one minute, and can be any desired time interval.

[0041] If the communication unit 6 becomes unable to communicate with the communication unit 16 for some reason, the notification determination unit 9 determines whether the battery 14 has an insufficient amount of stored power, based on the most recent information on the amount of stored power (remaining power) of the battery 14 received from the managed terminal 2. If the most recent information on the amount of stored power (remaining power) of the battery 14 is low and the notification determination unit 9 determines that the amount of stored power is insufficient, the communication control unit 8 controls the communication unit 6 to transmit notification information to the administrator terminal 3 notifying that communication with the managed terminal 2 is impossible and that the managed terminal 2 has an insufficient amount of stored power. At this time, the most recent position information of the managed terminal 2 (including acquisition time information) received from the managed terminal 2 is transmitted to the administrator terminal 3 together with map information. When the communication unit 25 of the administrator terminal 3 receives the notification information, position information, and map information, the display unit 22 displays the notification information that the managed terminal 2 has an insufficient amount of stored power and the position information of the managed terminal 2 on the map, and the speaker 24 emits an alarm sound. If the most recent battery 14 has a large amount of stored power (remaining power) and the notification determination unit 9 determines that the amount of stored power is not insufficient, the communication control unit 8 controls the communication unit 6 to send notification information to the administrator terminal 3 notifying that communication with the managed terminal 2 is not possible. At this time, the most recent position information of the managed terminal 2 (including acquisition time information) received from the managed terminal 2 is sent to the administrator terminal 3 together with map information. When the communication unit 25 of the administrator terminal 3 receives the notification information, position information, and map information, the display unit 22 displays the notification information that communication with the managed terminal 2 is not possible and the position information of the managed terminal 2 on the map, and the speaker 24 emits a notification sound.

[0042] Possible causes of inability to communicate between the base station server 1 and the managed terminal 2 include, for example, insufficient power storage in the battery 14 to operate the control unit 11 or communication unit 16, the managed terminal 2 being submerged in water and causing the control unit 11 or communication unit 16 to malfunction, the managed terminal 2 receiving a strong impact and causing the control unit 11 or communication unit 16 to malfunction, the managed terminal being caught in an avalanche at a ski resort and the radio waves emitted by the communication unit 16 being blocked by snow, making communication impossible, or the managed terminal carrying the managed terminal 2 and moving out of the communication range.

[0043] When the notification determination unit 9 acquires the location information of the managed terminal 2, it determines whether the location of the managed terminal 2 is within a dangerous area. If the notification determination unit 9 determines that the location of the managed terminal 2 is within a dangerous area, the communication control unit 8 controls the communication unit 6, and notification information notifying that the managed terminal 2 has moved into the dangerous area is transmitted to the administrator terminal 3. At this time, the latest location information of the managed terminal 2 received from the managed terminal 2 (including acquisition time information) is transmitted to the administrator terminal 3 together with map information. When the communication unit 25 of the administrator terminal 3 receives the notification information, location information, and map information, the display unit 22 displays notification information indicating that communication with the managed terminal 2 is not possible and the location information of the managed terminal 2 on the map, and the speaker 24 emits an alarm sound.

[0044] When the notification determination unit 9 acquires the acceleration information of the managed terminal 2, it determines whether the moving speed of the managed terminal 2 is equal to or greater than a specified value. If the moving speed of the managed terminal 2 is equal to or greater than the specified value, it is possible that the managed terminal 2 has been put into a car and taken away, or that the managed terminal 2 has mistakenly boarded a train, bus, or taxi. Therefore, when the notification determination unit 9 determines that the managed terminal 2 is moving at a speed equal to or greater than the specified value, the communication control unit 8 controls the communication unit 6 to transmit notification information notifying the managed terminal 2 that it is moving at high speed to the administrator terminal 3. At this time, the communication unit 6 transmits the most recent position information of the managed terminal 2 (including acquisition time information) received from the managed terminal 2 to the administrator terminal 3 together with map information. When the communication unit 25 of the administrator terminal 3 receives the notification information, position information, and map information, the display unit 22 displays the notification information that the managed terminal 2 is moving at high speed and the position information of the managed terminal 2 on the map, and the speaker 24 emits an alarm sound.

[0045] The notification determination unit 9 determines whether the managed terminal 2 has been stationary and has not moved for a certain period of time or longer, based on the acceleration information acquired from the managed terminal 2. If the managed terminal 2 has not been moving for a certain period of time or longer, it is possible that the managed terminal 2 has fainted and fallen, is injured and unable to move, or has moved without realizing that it has dropped or left the managed terminal 2 behind. Therefore, when the notification determination unit 9 determines that the managed terminal 2 has been stationary and has not moved for a certain period of time or longer, the communication control unit 8 controls the communication unit 6 to transmit notification information to the administrator terminal 3, notifying that the managed terminal 2 has been stationary for a certain period of time or longer. At this time, the communication unit 6 transmits the most recent position information of the managed terminal 2 (including acquisition time information) received from the managed terminal 2 to the administrator terminal 3, along with map information. When the communication unit 25 of the administrator terminal 3 receives the notification information, position information, and map information, the display unit 22 displays the notification information indicating that the managed terminal 2 has been stationary for a certain period of time or longer, along with the position information of the managed terminal 2 on the map, and the speaker 24 emits a notification sound.

[0046] An administrator who has the administrator terminal 3 and has confirmed the display of alarm information notifying of insufficient battery power, inability to communicate, movement into a dangerous area, movement speed exceeding a specified value, or stoppage for a certain period of time or longer can search for the managed person carrying the managed terminal 2 by relying on the latest location information of the managed terminal 2 on a map.

[0047] When the base station server 1 receives each notification information from the managed terminal 2, the communication control unit 8 controls the communication unit 6 to communicate with the communication unit 16 of the managed terminal 2 at intervals shorter than the normal one minute interval, for example, at ten-second intervals. This makes it possible to obtain the location information of the managed terminal 2 in closer to real time. This location information is sent to the administrator terminal 3, making it easier for the administrator to find the managed terminal more quickly. Furthermore, when the base station server 1 and the managed terminal 2 are in a communication-disabled state, the communication unit 8 attempts to communicate with the communication unit 16 of the managed terminal 2 at intervals shorter than the normal one minute interval, for example, at ten-second intervals. This makes it possible to obtain the location information of the managed terminal 2 quickly when the base station server 1 and the managed terminal 2 recover from the communication-disabled state and become able to communicate.

[0048] As described above, the notification system of this embodiment includes a base station server 1, a managed terminal 2, and an administrator terminal 3. The base station server 1 includes a communication unit 6. The managed terminal 2 includes a location information acquisition unit 12 that acquires location information of the managed terminal 2 from a positioning satellite S and a communication unit 16. The administrator terminal 3 includes a display unit 22, a speaker 24, and a communication unit 25. The communication unit 6 is capable of two-way wireless communication with the communication units 16 and 25. The communication unit 6 communicates with the communication unit 16 at predetermined intervals to acquire location information. If communication between the communication unit 6 and the communication unit 16 becomes unavailable, the communication unit 6 transmits notification information and the most recently acquired location information to the communication unit 25. When the communication unit 25 receives the notification information and the location information, the display unit 22 and the speaker 24 notify the notification information and the location information. Therefore, even if communication between the base station server 1 and the managed terminal 2 becomes unavailable, notification information can be transmitted from the base station server 1 to the administrator terminal 3. The administrator who has the administrator terminal 3 can search for the person under management who is carrying the managed terminal 2 based on the notification information notified by the display unit 22 and the speaker 24.

[0049] In addition, in the notification system of this embodiment, the base station server 1 has a notification determination unit 9, the managed terminal 2 has a battery 14 and a power detection unit 15 that detects the amount of power stored in the battery 14, the communication unit 6 acquires power storage amount information detected by the power detection unit 15 from the communication unit 16 at predetermined intervals, and when communication between the communication units 6 and 16 becomes impossible, the notification determination unit 9 determines whether the amount of power stored in the battery 14 is insufficient based on the power storage amount information, and when the notification determination unit 9 determines that the amount of power stored in the battery 14 is insufficient, the notification information includes information about the insufficient amount of power. An administrator who possesses the administrator terminal 3 that has received the notification information including the information about the insufficient amount of power can recognize that the reason communication between the base station server 1 and the managed terminal 2 is most likely due to insufficient power stored in the battery 14 of the managed terminal 2, rather than an emergency occurring to the managed terminal carrying the managed terminal 2.

[0050] Furthermore, in the notification system of this embodiment, the location information includes map information, and a specific area can be set in the map information. Therefore, it is possible to confirm from the map information that a managed person carrying a managed terminal 2 has moved to a set specific area. Furthermore, when a managed person has moved to a specific area, notification information can be sent to the administrator terminal 3.

[0051] Furthermore, in the notification system of this embodiment, when communication between the communication unit 6 and the communication unit 16 becomes impossible, the communication unit 6 attempts to communicate with the communication unit 16 at intervals shorter than a predetermined interval. Therefore, when communication between the communication unit 6 and the communication unit 16 is restored and communication becomes possible, the location information of the managed terminal 2 can be obtained quickly.

[0052] Furthermore, in the notification system of this embodiment, the base station server 1 has a notification determination unit 9, the managed terminal 2 has an inertial sensor 13 that detects the acceleration of the managed terminal 2, the communication unit 6 communicates with the communication unit 16 at predetermined intervals to acquire acceleration information of the managed terminal 2, the notification determination unit 9 determines the movement speed of the managed terminal 2 based on the acceleration information, and when the notification determination unit 9 determines that the managed terminal 2 is moving at a speed greater than or equal to a specified value, the notification information includes information about the managed terminal 2 moving at high speed, and when the notification determination unit 9 determines that the managed terminal 2 has stopped without moving for a certain period of time or more, the notification information includes information about the managed terminal 2 being stopped for a certain period of time or more. Therefore, when the managed person carrying the managed terminal 2 is traveling by car (including a bus, taxi, truck, etc.), motorcycle, train, etc., the administrator carrying the administrator terminal 3 can confirm that the managed terminal 2 is moving at high speed. In addition, if the person to be managed carrying the managed terminal 2 is unable to move, or if the managed terminal 2 is dropped or left behind, the manager who has the manager terminal 3 can confirm that the managed terminal 2 has not moved for a certain period of time or more.

[0053] Furthermore, the notification program of this embodiment causes the base station server 1 to function as a communication unit 6 that receives various information via wireless communication, a notification determination unit 9 that determines whether or not a notification is necessary based on the information, and a communication control unit 8 that controls the communication unit 6 to transmit notification information based on the determination of notification by the notification determination unit 9. Therefore, even if communication between the base station server 1 and the managed terminal 2 becomes impossible, notification information can be transmitted from the base station server 1 to the administrator terminal 3.

[0054] The present invention is not limited to the above embodiment, and various modifications are possible within the scope of the gist of the present invention. In the above embodiment, there is one managed terminal 2 and one administrator terminal 3, but there may be one managed terminal 2 and multiple administrator terminals 3, multiple managed terminals 2 and one administrator terminal 3, or multiple managed terminals 2 and multiple administrator terminals 3. In this case, one managed terminal 2 may be linked to multiple administrator terminals 3, or multiple managed terminals 2 may be linked to one administrator terminal 3. [Explanation of symbols]

[0055] 1. Base station server (server equipment) 2 Managed terminal 3. Administrator terminal 6. Communication section (server communication section) 9 Notification determination unit 9 (determination unit) 12 Location information acquisition section 14 Battery 15 Power detector 16 Communication unit (managed terminal communication unit) 22 Display unit (notification means) 24 Speaker (notification means) 25 Communication unit (Administrator terminal communication unit) S positioning satellite

Claims

1. The system comprises a server device, a managed terminal, and an administrator terminal, the server device has a server communication unit, The managed terminal has a location information acquisition unit that acquires location information of the managed terminal from a positioning satellite, and a managed terminal communication unit, The manager terminal has a notification means and a manager terminal communication unit, the server communication unit is capable of two-way wireless communication with the managed terminal communication unit and the administrator terminal communication unit; the server communication unit communicates with the managed terminal communication unit at predetermined intervals to acquire the location information; When communication between the server communication unit and the managed terminal communication unit becomes impossible, the server communication unit transmits notification information and the most recently acquired location information to the administrator terminal communication unit, When the manager terminal communication unit receives the notification information and the location information, the notification means notifies the notification information and the location information.

2. the server device has a determination unit, The managed terminal has a battery and a power amount detection unit that detects the amount of power stored in the battery, the server communication unit acquires the stored power amount information detected by the power amount detection unit from the managed terminal communication unit at predetermined intervals; When communication between the server communication unit and the managed terminal communication unit becomes impossible, the determination unit determines whether or not the amount of stored power in the battery is insufficient based on the stored power amount information; When the determination unit determines that the amount of stored power in the battery is insufficient, 2. The notification system according to claim 1, wherein the notification information includes information about a shortage of stored power.

3. The location information includes map information, 2. The notification system according to claim 1, wherein a specific area can be set in the map information.

4. The notification system described in claim 1, characterized in that when communication between the server communication unit and the managed terminal communication unit becomes impossible, the server communication unit attempts to communicate with the managed terminal communication unit at intervals shorter than the specified interval.

5. the server device has a determination unit, the managed terminal has an inertial sensor that detects the acceleration of the managed terminal; the server communication unit communicates with the managed terminal communication unit at predetermined intervals to acquire acceleration information of the managed terminal; the determining unit determines a moving speed of the managed terminal based on the acceleration information; When the determination unit determines that the managed terminal is moving at a speed equal to or greater than a specified value, the notification information includes high-speed movement information of the managed terminal, The notification system described in claim 1, characterized in that when the judgment unit determines that the managed terminal has been stationary without moving for a certain period of time or more, the notification information includes information that the managed terminal has been stationary for a certain period of time or more.

6. The server device, a communication unit that receives various information via wireless communication; a determination unit that determines whether or not notification is necessary based on the information; a notification program causing the program to function as a communication control unit that controls the communication unit to transmit notification information based on the notification determination made by the determination unit;

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