JP6438728B2 - Fall notification system - Google Patents

Description

  The present invention relates to a fall notification system that detects a person's fall and reports it to a management center.

  For example, a portable terminal such as a mobile phone is used as a reporting means when an elderly person or a disabled person falls outdoors and needs help. However, if the fallen person loses consciousness or is injured and cannot operate the mobile terminal, the report cannot be made. Such a situation may occur not only in elderly people and persons with disabilities, but also in rescuers engaged in rescue operations with high risks such as firefighters, police officers, and security guards. In particular, when a firefighter enters a building, he or she may inhale smoke and fall into consciousness, and even in this case, it is impossible for firefighters to perform an operation to report a fall. is there.

  Therefore, the portable wireless device is equipped with a fall detection function using, for example, a gyro sensor and a vibration sensor, detects a fall with the fall detection function, and sends a fall notification to the management center via the base station to seek relief. A technique has been proposed (see, for example, Patent Document 1).

JP 2000-155889 A

  However, in the technique described in Patent Document 1, since the fall detection function is always in an operating state when the portable wireless device is turned on, for example, the fire extinguishing activity is substantially performed during the fire extinguishing preparation or after the extinguishing operation. Even when a firefighter falls down accidentally in a state where it is not performed, a fall report may be transmitted even though relief is not required. If this unnecessary falling notification occurs frequently, not only will it interfere with the original business of the management center, but it will cause an increase in traffic on the wireless network, which is very undesirable.

  The present invention has been made paying attention to the above circumstances, and the purpose of the present invention is to provide a tipping report in which the tipping report is transmitted only when relief is required so that the rescue operation and radio traffic are optimized. To provide a system.

To achieve the above object, according to a first aspect of the present invention, there is provided a fall report comprising a portable terminal possessed by a user and a management center capable of mutual communication with the portable terminal via a network. In the system, a first control signal for designating a fall detection period is transmitted from the management center to the portable terminal. When the mobile terminal receives the first control signal transmitted from the management center, the mobile terminal detects an overturn of the user during the fall detection period specified by the received first control signal. When a fall is detected, a fall report information is generated , and information indicating a change in the body movement of the user before and after the fall detection is detected, and the detected information is included in the fall report information. When the fall information is transmitted to the management center and the management center receives the fall notification information, the fall location of the user based on the information indicating the change in the body movement of the user before and after the fall included in the fall detection information Is to be estimated .

  According to a second aspect of the present invention, there is provided a triaxial acceleration sensor that detects triaxial acceleration representing the movement of the user and outputs the detected data, and the user's freedom from the detection data of the triaxial acceleration sensor. Waveform change patterns representing fall, impact and stillness are detected, respectively, and the user's fall is determined based on the detection results of these waveform change patterns.

  According to a third aspect of the present invention, when the fall notification information transmitted from the portable terminal is received, a second control signal for requesting acquisition of ambient sound is transmitted from the management center to the portable terminal. When the terminal receives the second control signal transmitted from the management center, the terminal sets the transmission system to the operating state and transmits an audio signal representing the ambient sound of the user to the requesting management center. The management center receives the audio signal representing the ambient sound transmitted from the portable terminal and outputs the audio signal.

According to the first aspect of the present invention, the portable terminal performs the user's fall detection operation only during the fall detection period specified by the first control signal sent from the management center. For this reason, even if the user accidentally falls during a period other than the fall detection period designated by the management center, the fall notification is not transmitted. Therefore, transmission of a fall notification that does not substantially require relief is prevented, thereby making it possible to optimize the rescue operation and radio traffic in the management center.
Furthermore, when a fall notification is made from the mobile terminal to the management center, information indicating a change in the body movement of the user before and after the fall is sent to the management center together with the fall notification information, and the management center detects the change in the movement of the body. A fall place is estimated based on the information to represent. For this reason, it is possible to estimate where the user fell down, for example, where there is a large step where there is a risk of falling, whether it is a staircase, an elevator, etc. Appropriate relief requests can be issued.

  According to the second aspect of the present invention, the following effects can be obtained. That is, in general, when a person falls, the movement of the body follows a change in which a free fall first occurs, then a large impact occurs, and finally a stationary state is reached. In the second aspect of the present invention, paying attention to the characteristics of the change pattern of the body movement at the time of the fall, the waveform change patterns representing the user's free fall, impact and stillness are respectively detected from the detection data of the triaxial acceleration. Detection is performed, and the user's fall is determined based on the detection results of these waveform change patterns. For this reason, it is possible to detect the fall more accurately than when the fall is simply detected by the orientation or vibration of the body.

  According to the third aspect of the present invention, when a fall notification occurs, a request for acquiring ambient sound is sent from the management center to the mobile terminal, and in response to this, the transmission system is activated in the mobile terminal. Sound is sent to the management center. For this reason, the management center can estimate the situation around the fallen person from the ambient sound, and can thereby make an appropriate rescue request for each fallen person.

The figure which shows schematic structure of the fall notification system which concerns on one Embodiment of this invention. The block diagram which shows the function structure of the management center used with the system shown in FIG. The block diagram which shows the function structure of the portable radio | wireless machine used with the system shown in FIG. FIG. 4 is a flowchart showing an operation procedure and operation contents of the management center shown in FIG. 2 and the portable wireless device shown in FIG. 3; FIG. 4 is a flowchart showing an operation procedure of the management center shown in FIG. 2 and the second half of the operation content of the portable wireless device shown in FIG. 3; The flowchart which shows the procedure and operation | movement content of a fall detection operation among the operation procedures of the portable radio | wireless machine shown in FIG. The figure which shows an example of the acceleration change curve at the time of a fall. The figure which shows an example of the acceleration change curve when sitting on a chair. The figure which shows an example of the acceleration change curve at the time of a walk. The figure which shows an example of the acceleration change curve at the time of stair climbing.

Embodiments according to the present invention will be described below with reference to the drawings.
[One Embodiment]
(Constitution)
FIG. 1 is a schematic configuration diagram of a fall notification system according to an embodiment of the present invention.
The fall notification system of this embodiment reports a fall during a fire fighting operation of a firefighter to the management center and requests support from surrounding firefighters. For this purpose, this system comprises a plurality of portable radios MS1 to MSn each possessed by a firefighter US and a management center BC in which a commander resides, and enables communication between them via a wireless network NW. Yes. Note that the wireless network NW is used for business information transmission, etc. for security / guarding activities, fire fighting activities, disaster countermeasure activities, operation management, etc., for example, in various organizations and companies including public offices and local governments A network used by a network system for commercial radios or a Personal Handyphone System (PHS) is used.

  FIG. 2 is a block diagram showing a functional configuration of the management center BC. The management center BC is composed of a personal computer or a workstation, and uses a control unit 1 having a central processing unit (CPU) and, for example, a hard disk drive (HDD) or a solid state drive (SSD) as a storage medium. A storage unit 2 and a communication interface unit 3 are provided.

  The communication interface unit 3 transmits and receives radio signals to and from the portable radio devices MS1 to MSn through the radio network NW under the control of the control unit 1.

  The storage unit 2 includes a grouping information storage unit 21 and a fall notification information storage unit 22 as storage units necessary for carrying out this embodiment. The grouping information storage unit 21 stores grouping information of the portable wireless devices MS1 to MSn grouped according to the affiliation of the firefighter US. The grouping information stores attribute information of firefighters US belonging to the group, identification numbers of portable radios MS1 to MSn possessed by the firefighter, and telephone number or address information in association with the group number. is there.

  The fall notification storage unit 22 stores fall notification information sent from portable radio devices MS1 to MSn, which will be described later, together with the telephone number or address information of the portable radio devices MS1 to MSn as transmission sources.

  The control unit 1 includes a fall detection function setting control unit 11, a fall notification acquisition control unit 12, an ambient sound acquisition control unit 13, and a fall location estimation unit 14 as control functions necessary for carrying out this embodiment. The rescue command control unit 15 is provided. All of these control functions are realized by causing the CPU to execute a program stored in a program memory (not shown).

  The fall detection function setting control unit 11 sets a confirmation code and a portable wireless device belonging to the group for each group based on the grouping information stored in the grouping information storage unit 21 at the start of the fire fighting operation. Send / receive the response to check the ON / OFF setting state of the fall detection function, and send the ON setting code to the portable wireless device that is not set to the ON state to set the fall detection function to the ON state. To do. In addition, an OFF setting code is transmitted at the end of the fire fighting activity to perform processing for restoring the fall detection function to the OFF state.

  The fall notification reception control unit 12 receives the fall notification information transmitted from the portable radio devices MS1 to MSn, associates the fall report information with the telephone number or address information of the transmission source portable radio, and stores the fall notification storage unit. The process to store in 22 is performed.

  The ambient sound acquisition control unit 13 transmits an ambient sound acquisition request to the portable wireless devices MS1 to MSn that have transmitted the fall notification information, and in response to this request, the ambient sound transmitted from the portable wireless devices MS1 to MSn is transmitted. It has a function of receiving an audio signal and outputting it from a speaker (not shown).

  When the fall report information is received, the fall location estimation unit 14 reads acceleration data included in the fall report information from the fall report storage unit 22 and determines the fall location of the firefighter based on the acceleration data. It has a function of performing processing to estimate and display on a display unit (not shown).

  When the rescue instruction is input by the operation of the commander, the rescue command control unit 15 selects the firefighter or the group that is the target of the rescue instruction based on the grouping information stored in the grouping information storage unit 21. It selects and performs the process which transmits the rescue request information toward the portable radio equipment of the selected firefighter or group.

FIG. 3 is a block diagram showing a functional configuration of the portable radio devices MS1 to MSn.
The portable wireless devices MS1 to MSn of the present embodiment include, for example, commercial wireless devices or PHS terminals, and have an additional function for reporting a fall in addition to a normal communication function. That is, each of the portable wireless devices MS1 to MSn includes a call unit 4, a wireless circuit unit 5 including an antenna 51, a control unit 6, an acceleration data storage unit 7, an input / output unit 8, and a power supply unit 9. Yes. The power supply unit 9 includes a battery 91 and a power supply circuit 92 that generates a predetermined power supply voltage Vcc based on the output voltage.

  First, in the transmission system, the communication unit 4 detects the voice or ambient sound of the speaker with the microphone 41, encodes the voice signal with the audio codec 44, and then performs error correction coding and coding in the digital signal processor (DSP). Modulation processing is performed and then output to the radio circuit unit 5. On the other hand, in the receiving system, the received baseband signal output from the wireless circuit unit 5 is demodulated and error-corrected by the DSP 45, and then decoded by the audio codec 44 to reproduce the voice signal of the other party's speaker. The received audio signal is amplified by the receiving amplifier 43 and then output from the speaker 42.

  The radio circuit unit 5 converts the transmission baseband signal output from the DSP 45 into a radio signal and transmits it from the antenna 51, and converts the radio signal received by the antenna 51 into a reception baseband signal and outputs it to the DSP 44. .

  The input / output unit 8 includes an operation unit 81 having a dial key, function buttons and switches, a display unit 82 using a liquid crystal display device (LCD), and a triaxial acceleration sensor 83. The triaxial acceleration sensor 83 outputs triaxial (x, y, z) acceleration data representing the movement of the firefighter.

  The acceleration data storage unit 7 is used to store the triaxial acceleration data detected by the triaxial acceleration sensor 83 during a certain time before and after a firefighter's fall is detected.

  The control unit 6 includes a microprocessor (MPU) as a main control unit. As control functions necessary for carrying out the present embodiment, a fall detection function setting receiving unit 61, a fall detection unit 62, and a warning sound generation control unit are provided. 63, a fall notification control unit 64, and an ambient sound transmission control unit 65. These control functions are realized by causing the MPU to execute a program stored in a program memory (not shown).

  When a fall detection function ON / OFF setting status confirmation code is sent from the management center BC, the fall detection function setting accepting unit 61 determines the ON / OFF setting status of the fall detection function and sends a response indicating the result. Return to the management center BC. Also, the fall detection function ON setting code is set to ON when a fall detection function ON setting code is sent from the management center BC, while the fall detection function is turned OFF when the fall detection function OFF setting code is sent. Perform recovery processing.

  The fall detection unit 62 operates the triaxial acceleration sensor 83 to acquire triaxial acceleration data during the period when the fall detection function is set to the ON state, analyzes the waveform pattern of the triaxial acceleration data, and analyzes the analysis. Based on the result, a process of detecting a fall is performed. Further, when a fall is detected, the triaxial acceleration data for a certain period before and after that is stored in the acceleration data storage unit 7 together with a time stamp indicating the detection time.

  When the fall detection unit 62 detects a fall, the warning sound generation control unit 63 operates the reception system of the call unit 4 to output a warning sound from the speaker 42 for a predetermined time.

  The fall notification control unit 64 monitors the operation of the release button of the operation unit 81 during the generation period of the warning sound, generates fall report information when the release button is not operated during a certain period, and the fall report A process of transmitting information to the management center BC together with the triaxial acceleration data before and after the fall stored in the acceleration data storage unit 7 is performed.

  The ambient sound transmission control unit 65 performs processing for operating the transmission system of the call unit 4 to transmit ambient sound to the management center BC when an ambient sound acquisition request is sent from the management center BC.

(Operation)
Next, the operation of the fall notification system configured as described above will be described.
4 to 5 are flowcharts showing the operation procedure and operation contents of the management center BC and the portable wireless devices MS1 to MSn.

(1) ON setting of the fall detection function Assume that, for example, in the management center BC, a commander designates a certain group and inputs a fire fighting activity start command. The input of this fire fighting activity start command is detected in step S11. When the input of the fire fighting activity start command is detected, the fall detection function setting process is performed between the management center BC and the portable wireless devices (for example, MS1 to MSi) belonging to the specified group as follows. .

  That is, under the control of the fall detection function setting control unit 11, the control unit 1 of the management center BC first sets the specified group based on the grouping information stored in the grouping information storage unit 21 in step S12. A confirmation code for confirming the setting state of the fall detection function is transmitted to the portable wireless devices MS1 to MSi to which they belong. On the other hand, when the portable wireless devices MS1 to MSi belonging to the designated group receive the setting confirmation code in step S13, the current setting state of the fall detection function is controlled in step S14 under the control of the fall detection function setting receiving unit 61. And a response indicating the result is returned to the management center BC.

  When the fall detection function setting control unit 11 of the management center BC receives the response in step S15, in step S16, the fall detection function setting control unit 11 is turned on for the portable radios MS1 to MSi in which the current setting state of the fall detection function is OFF. Send a setup code. On the other hand, when the fall detection function setting accepting unit 61 of the portable wireless devices MS1 to MSi receives the ON setting code in step S17, it sets the operation state of the fall detection function to the ON state and thereafter controls the fall detection unit 62. The fall detection process is executed as follows.

(2) Fall Detection The fall detection unit 62 first activates the triaxial acceleration sensor 83 in step S18, takes triaxial acceleration data from the triaxial acceleration sensor 83 in step S19, and stores it in the acceleration data storage unit 7. The acceleration data stored in the acceleration data storage unit 7 is updated at a constant cycle, for example, every 10 seconds.

  When the fall detection unit 62 takes in the triaxial acceleration data, in step S20, the fall detection unit 62 analyzes the waveform pattern of the triaxial acceleration data and determines whether or not a fall has occurred as follows. FIG. 6 is a flowchart showing the determination processing procedure and processing contents.

  That is, first, in step S201, a waveform pattern representing “free fall” is detected. When a waveform pattern indicating “free fall” is detected, a waveform pattern indicating “impact” is subsequently detected in step S202. When a waveform pattern representing “impact” is detected, a waveform pattern corresponding to “still” is detected in step S203.

  Here, when a fall occurs, for example, as shown in FIG. 7, waveform patterns representing “free fall”, “impact”, and “still” appear in the triaxial acceleration data within a certain time. In the present embodiment, paying attention to this point, if the waveform patterns corresponding to the “free fall”, “impact”, and “still” are detected in order within a certain time, it is determined that a fall has occurred.

  Incidentally, the change of the triaxial acceleration data when sitting on a chair is as shown in FIG. 8, for example. Further, the change of the triaxial acceleration data at the time of walking is as shown in FIG. 9, for example, and the change of the triaxial acceleration data at the time of raising and lowering the stairs is as shown in FIG. That is, the combination of waveform pattern changes that occur during a fall can be clearly distinguished from the waveform pattern changes that appear when sitting on a chair, walking, and going up and down stairs.

(3) Notification of fall occurrence When the fall is detected, the portable wireless devices MS1 to MSi activate the warning sound generation control unit 63 in step S21 and operate the reception system of the call unit 4 to give a warning sound from the speaker 42. For a certain period of time. For example, it is continuously output for 1 minute at the maximum volume. In this state, the portable wireless devices MS1 to MSi monitor the depression of the release button in step S22 while monitoring the output of the warning sound in step S23 under the control of the fall notification control unit 64. If the release button is pressed during the warning sound output period, it is determined that the firefighter who has fallen has a clear consciousness, and the fall detection process described in (2) above is performed without sending a fall notification. Return to.

  On the other hand, it is assumed that the release button is not pressed during the warning sound output period. In this case, it is determined that the firefighter who has fallen has lost his consciousness or has been injured so that the release button cannot be operated. Then, in step S24, the triaxial acceleration data in a certain period before and after the fall detection is read from the acceleration data storage unit 7, and the fall notification information including the triaxial acceleration data is transmitted to the management center BC in step S25.

  When receiving the fall notification information in step S26, the management center BC stores the received fall notification information in the fall notification storage unit 22 in association with the telephone number or address information of the transmission source portable wireless device in step S27. To do.

(5) Ambient Sound Acquisition When the management center BC receives the fall notification information, the management center BC activates the ambient sound acquisition control unit 13 in step S28, and requests the ambient sound to be acquired from the portable wireless device that has transmitted the fall notification information. Send. In contrast, when the portable wireless device receives the ambient sound acquisition request in step S29, the portable wireless device activates the ambient sound transmission control unit 65. Then, under the control of the ambient sound transmission control unit 65, the transmission system and the radio circuit unit 5 of the call unit 4 are set in an operating state for a certain period (for example, 30 seconds) in step S30. As a result, the ambient sound is collected by the microphone 41, and the encoded data of the ambient sound is transmitted to the management center BC for 30 seconds (step S31).

  When the management center BC receives the encoded data of the ambient sound in step S32, the management center BC decodes the received encoded data of the ambient sound in step S33, and then outputs the sound from a speaker (not shown). As a result, the commander of the management center BC can infer from the sound the situation around the firefighter who has fallen due to the ambient sound.

(6) Estimating the fall location The management center BC activates the fall location estimation unit 14 in step S34, and receives and stores the fall location first from the fall notification storage unit 22 under the control of the fall location estimation unit 14. The triaxial acceleration data included in the fall notification information is read, and the fall place is estimated based on the triaxial acceleration data. For example, if the triaxial acceleration data before falling includes a waveform pattern at the time of ascending / descending stairs as shown in FIG. 10, it can be estimated that the falling place is “stairs”. If the 3-axis acceleration data before the fall includes a waveform pattern during walking as shown in FIG. 9, it can be estimated that the fall place is the “floor”. The fall place estimation unit 14 displays the estimation result on the display unit.

(7) Relief instruction In the management center BC, the commander estimates the surrounding situation of the firefighter who has fallen from the estimated result of the fall location displayed above and the ambient sound output from the speaker. And the other firefighter or group used as the object of a relief instruction is selected, and the relief instruction containing the identification code of this selected firefighter or group is input.

  When the management center BC detects the input of the rescue instruction in step S35, the rescue center control unit 15 controls the rescue instruction code in step S36 and the portable radio of the firefighter belonging to the selected firefighter or group. Send to. At this time, the rescue instruction code includes information indicating the estimation result of the fall place of the fall person who is the rescue target. When the rescue instruction code is received, the portable wireless device is notified by sound, vibration, and light emission that the rescue instruction has been received, and the estimated result of the fall place is displayed. As a result, the rescuer can go to rescue the faller.

(8) Fall detection function OFF setting Assume that the fire extinguishing activity at the site has been completed and the commander has input a fire extinguishing activity termination command at the management center BC. The input of this fire fighting activity end command is detected in step S37. When the input of the fire extinguishing activity end command is detected, the management center BC, under the control of the fall detection function setting control unit 11, transfers to the portable wireless devices MS1 to MSi belonging to the group designated at the start of the fire extinguishing activity in step S38. Send OFF setting code.

  On the other hand, when the portable wireless devices MS1 to MSi receive the OFF setting code in step S39, under the control of the fall detection function setting receiving unit 61, the acceleration sensor 83 is deactivated in step S40, and the fall detection function is activated. Restore the state to the OFF state.

(effect)
As described above in detail, in the present embodiment, the management center BC transmits the ON setting code and the OFF setting code for designating the fall detection start timing and the end timing to the mobile terminals MS1 to MSi, respectively, and the mobile terminals MS1 to MS1 are transmitted. The MSi sets the fall detection period by the ON setting code and the OFF setting code, and performs the fall detection operation only during this period. When a fall is detected, a warning sound is generated for a certain time, and a fall notification is transmitted to the management center BC only when the release button is not pressed within the certain time.

  For this reason, even if the firefighter accidentally falls during a period other than the fall detection period designated by the management center BC, the fall notification is not transmitted. In addition, when the faller operates the release button in response to the generation of the warning sound, the fall notification is not transmitted. Therefore, transmission of a fall notification that does not substantially require relief is prevented, and thereby it becomes possible to optimize the rescue operation and radio traffic in the management center BC.

  Further, in the present embodiment, waveform change patterns representing free fall, impact and stillness are detected from the detection data of the triaxial acceleration sensor 83, and if these waveform change patterns are detected in order within a certain time, a fall is caused. It is determined that it has occurred. For this reason, it is possible to detect the fall more accurately than when the fall is simply detected by the orientation or vibration of the body.

  Further, in the present embodiment, when a fall notification occurs, the management center BC transmits an ambient sound acquisition request to the reporter portable wireless device, and the portable wireless device responds to the ambient sound acquisition request by the call unit. No. 4 transmission system is in an operating state, and ambient sound is transmitted to the management center BC. The management center BC outputs the ambient sound transmitted from the portable wireless device. For this reason, in the management center BC, it is possible to infer the situation around the fallen person from the ambient sound, thereby making it possible to make an appropriate rescue request for each fallen person.

  Further, in the present embodiment, in the mobile radio devices MS1 to MSn, the triaxial acceleration data representing the change in the movement of the user's body before and after the fall detection is included in the fall notification information and transmitted to the management center BC. The fall location is estimated and displayed based on the triaxial acceleration data included in the fall report information. For this reason, it is possible to estimate the place where the person fell down, and it is possible to issue a more appropriate rescue request. At that time, it is possible to estimate the fall place more accurately by taking the ambient sound into consideration.

[Other Embodiments]
In the above embodiment, the case of detecting the fall of a firefighter has been described as an example. However, the present invention is not limited to this, and is rescued when a person engaged in rescue or recovery work in a disaster, or an elderly person or a disabled person falls. The present invention can be applied to any person who needs to.

  In addition, the type and configuration of the mobile terminal, the type and configuration of the information processing device used in the management center, the type of network, the procedure and content of the fall detection manual difference, the processing procedure and content of the fall notification, etc. Various modifications can be made without departing from the scope of the present invention.

  In short, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  US ... User, BC ... Management center, MS1-MSn ... Portable wireless device, NW ... Network, 1 ... Management center control unit, 2 ... Storage unit, 3 ... Communication interface unit, 4 ... Call unit, 5 ... Wireless circuit , 6 ... Control unit of portable terminal, 7 ... Acceleration data storage unit, 8 ... I / O unit, 9 ... Power supply unit, 11 ... Fall detection function setting control unit, 12 ... Fall notification reception control unit, 13 ... Ambient sound acquisition Control unit, 14 ... Falling place estimation unit, 15 ... Relief command control unit, 21 ... Grouping information storage unit, 22 ... Falling report storage unit, 41 ... Microphone, 42 ... Speaker, 43 ... Receiver amplifier, 44 ... Audio codec, 45 ... DSP, 5 ... wireless circuit unit, 51 ... antenna, 61 ... fall detection function setting receiving unit, 62 ... fall detection unit, 63 ... warning sound generation control unit, 64 ... fall Multicast controlling section, 65 ... ambient sound transmission control unit, 81 ... operation part, 82 ... LCD, 83 ... 3-axis acceleration sensor, 91 ... battery, 92 ... power supply circuit.

Claims (3)

A mobile terminal possessed by the user, and a management center capable of communicating with each other via the network with the mobile terminal;
The management center includes transmission means for transmitting a first control signal for designating a fall detection period to the mobile terminal,
The portable terminal is
Receiving means for receiving a first control signal transmitted from the management center;
A fall detection means for performing an operation for detecting the fall of the user during the fall detection period specified by the received first control signal;
When the fall of the user is detected by the fall detection means, and means that form the tipping notification information for notifying the tipping raw,
Means for detecting information representing a change in a user's body movement before and after the detection of the fall, and including the detected information in the fall notification information and transmitting to the management center ,
The management center, when receiving the fall notification information, means for estimating the fall location of the user based on information representing a change in the body movement of the user before and after the fall included in the fall detection information The fall report system further comprising: The fall detection means includes
A triaxial acceleration sensor for detecting triaxial acceleration representing the movement of the user and outputting the detection data;
Means for detecting waveform change patterns representing free fall, impact and stillness of the user from detection data of the three-axis acceleration sensor, and determining the user's fall based on the detection results of the respective waveform change patterns; The fall notification system according to claim 1, further comprising: The fall detection means includes
A triaxial acceleration sensor for detecting triaxial acceleration representing the movement of the user and outputting the detection data;
Means for detecting waveform change patterns representing free fall, impact and stillness of the user from detection data of the three-axis acceleration sensor, and determining the user's fall based on the detection results of the respective waveform change patterns; The fall notification system according to claim 1 or 2, further comprising:

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