JP2015191304A - safety confirmation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety confirmation system capable of suppressing the power consumption and communication costs of communication equipment, and suppressing the erroneous recognition or oversight of a confirming person by reducing his or her labor.SOLUTION: In a safety confirmation system, communication equipment 1 includes: a comparison processing part 13 for comparing an acquired meter pointer value v with a meter pointer value v0 acquired in the past to calculate a relative gas usage u; a notification determination part u for, when a predetermined condition related to the abnormality of a confirmed person is satisfied by the calculated relative gas usage u, determining that notification to a center is required; and a communication equipment control part 15 for, when it is determined that notification to the center is required by the notification determination part u, performing notification processing to the center, and the center includes a center control part 24 for, only when receiving notification from the communication equipment control part 15, notifying a confirming person of the possibility of the generation of abnormality in the confirmed person.

Description

  The present invention provides a safety index output device provided in a residence of a confirmed person and capable of cumulatively outputting a safety index value serving as an index when determining the safety of the confirmed person, and an output of the safety index output apparatus Confirmation based on the safety index value by communication from the center, a communication device that obtains a safety index value for each first period and communicates with the outside, a center configured to be able to communicate with the communication device, and the communication from the center The present invention relates to a safety confirmation system configured such that a person can confirm the safety of the person being confirmed.

There is a safety confirmation system disclosed in Patent Document 1 as a system similar to the safety confirmation system according to the present application. In this patent document 1, the living situation confirmation contractor B operates from the usage status detection sensor 7 that detects the usage status of public services such as electricity, gas, and water in the contractor's house A in FIG. A configuration is disclosed in which the usage status is transmitted to the server 2 periodically (for example, at intervals of several minutes). In the case of this system, the usage status detection sensor 7 is the safety index output device in the present application, the device that transmits the output information of the sensor 7 to the server 2 is the communication device in the present application, and the server 2 has the role of the center in the present application. Bear. In this system, the server 2 includes determination means 5 for determining whether the server 2 is abnormal or normal based on the received usage status data. Inform.
Therefore, the confirmation judgment subject of the safety confirmation is the server 2.

  In addition, the communication from the sensor 7 to the server 2 is configured to periodically transmit the usage status to the server 2 (for example, at intervals of several minutes). .

  On the other hand, as a safety confirmation system for notifying the confirmation person of the safety of the person to be confirmed, a system for confirming the safety based on the operation state of the gas meter at the person to be confirmed is known. The applicants and others are considering adopting a configuration as shown in FIG. 5 of this specification as a specific configuration of a safety confirmation system using a gas meter.

  Specifically, first, the center 52, which is a service provider for safety confirmation, periodically (in the example shown in the figure, every day) at a predetermined cycle T1, the NCU ( A meter reading request is made to the Network Communication Unit) 51. The NCU 51 acquires the meter pointer value of the gas meter 54 based on the request from the center 52, and returns the acquired meter pointer value to the center 52 as a meter reading response. The center 52 calculates the amount of gas used at the person to be confirmed based on the acquired meter pointer value, and notifies the confirmer of the calculated amount of gas used (“the amount used today” in the figure). The confirmer himself / herself determines the presence / absence of the person being confirmed based on the amount of gas used notified from the center 52.

  Even when this configuration is adopted, the meter reading information is basically communicated from the gas meter 54 to the center 52 at all times. Furthermore, the center 52 plays a role of calculating the usage amount of the gas meter and notifying the confirmer, and the confirmer determines whether there is an abnormality.

JP 2003-6337 A

  However, the configuration disclosed in Patent Document 1 has a problem that power consumption is increased and communication cost is increased because communication is always performed periodically from the use state detection sensor 7 to the server 2. In addition, if the situation where no abnormality occurs continues, there is a problem that the contact D has no way of knowing whether the safety confirmation system is operating normally, or when the determination means 5 of the center 2 makes a determination error. There is a problem that no abnormality is found in the contractor's house A.

  On the other hand, even in the configuration shown in FIG. 5 of the present specification, since the center 52 periodically communicates with the NCU 51 even if the person to be confirmed has no abnormality, the battery consumption of the NCU 51 increases and the communication There is a problem that the cost becomes high. In addition, the confirmer periodically receives notifications from the center 52 regardless of the safety of the person to be confirmed, so it is necessary to check the contents of the notification each time and determine whether there is an abnormality. In many cases, there was a possibility of misrecognition and oversight of abnormalities.

  Therefore, an object of the present invention is to provide a safety confirmation system that can reduce power consumption and communication cost of a communication device such as an NCU provided in a gas meter, reduce a burden on a confirmer, and prevent erroneous recognition and oversight. There is.

In order to achieve the above object, the feature configuration of the safety confirmation system according to the present invention is provided in the residence of the confirmed person, and cumulatively outputs the safety index value as an index when judging the safety of the confirmed person A possible safety indicator output device, a communication device that obtains a safety indicator value output by the safety indicator output device for each first period and communicates with the outside, a center configured to be able to communicate with the communication device, and
A safety confirmation system configured to enable a confirmer to confirm the safety of the person to be confirmed based on the safety index value by communication from the center,
The communication device is
A comparison processing unit that calculates a relative safety index amount by comparing the acquired safety index value with a safety index value acquired in the past;
A notification determination unit that determines that notification to the center is necessary when the relative safety index amount calculated by the comparison processing unit satisfies a predetermined condition relating to the abnormality of the person to be confirmed;
A communication device control unit that performs notification processing to the center when the notification determination unit determines that notification is necessary,
The center
Only when a notification from the communication device control unit is received, a center control unit for notifying the confirmer that there is a possibility that an abnormality has occurred in the person to be confirmed is provided.

  According to the above characteristic configuration, the safety index value is acquired for each first period only between the communication device and the safety index output device, and the relative safety index amount is calculated on the communication device. Further, communication between the communication device and the center is performed only when the relative safety index amount satisfies a predetermined condition related to the abnormality of the person to be confirmed on the communication device. For this reason, the frequency of communication between the communication device and the center can be minimized, and the power consumption and communication cost of the communication device can be reduced. In addition, the notification from the center to the confirmer is only performed when a predetermined condition relating to the abnormality of the person to be confirmed is satisfied, so the notification frequency is reduced and the confirmer receives only the necessary notification. Therefore, it is possible to reduce the burden on the confirmer's notification confirmation. That is, the confirmer can easily grasp the occurrence of the abnormality by the notification from the center, and can suppress misrecognition and oversight. As described above, according to the above-described characteristic configuration, it is possible to provide a safety confirmation system that can reduce power consumption and communication cost of a communication device, reduce a burden on a confirmer, and suppress erroneous recognition and oversight.

In the safety confirmation system according to the present invention, in addition to the above characteristic configuration, the communication device includes:
A safety index amount period data storage unit for storing safety index amount period data corresponding to a predetermined safety index amount acquisition period of the relative safety index amount calculated by the comparison processing unit;
The center
The safety index amount cycle data stored in the safety index amount cycle data storage unit is configured to obtain every second cycle set longer than the first cycle,
A safety index amount period data processing unit for storing the acquired safety index amount period data;
The center control unit
Based on the safety index amount period data stored in the safety index amount period data processing unit, the safety index amount for notifying the confirmer of the safety index amount information of the safety index amount acquisition period for each second period It is preferable that the notification is configured.

  According to the above characteristic configuration, in addition to the confirmation of the safety of the person to be confirmed based on the relative safety index amount in the first period, the second period from the center to the confirmer in the second period set longer than the first period. The safety indicator amount information during is notified. For this reason, it is also possible to find an abnormality over time that is difficult to notice by a change in the relative safety index amount in the first cycle unit. That is, it is possible to provide a highly-convenient safety confirmation system that can realize the abnormality of the person being confirmed while suppressing the burden on the confirmer.

In addition, the center control unit
Based on the safety index amount period data stored in the safety index amount period data processing unit, in addition to the safety index amount notification, notifies whether the communication device and the safety index output device are operating normally. It is preferable that the operation status notification is performed.

  According to the above characteristic configuration, even when an abnormality occurs in the communication device or the safety indicator output device, it is possible to easily know the abnormality, so the communication device and the safety indicator output device are inspected at an early stage. It becomes possible. Therefore, it is possible to reduce a possibility that the abnormality of the person to be confirmed is missed due to the abnormality of the communication device or the safety indicator output device. That is, a more reliable safety confirmation system can be realized.

Furthermore, the center
A safety index amount history storage unit for storing a history of the safety index amount period data stored in the safety index amount period data processing unit;
The center control unit
The safety index amount period data stored in the safety index amount period data processing unit is compared with past safety index amount period data stored in the safety index amount history storage unit, and the trend of the relative safety index amount It is preferable to analyze the presence / absence of a change and to send a trend change notification.

  According to the above characteristic configuration, the confirmer can know the change in the tendency of the index amount that occurs in the second period. That is, there is a possibility that an abnormality that could not be found only from the relative safety index amount check in the first period can be detected. Specifically, for example, an abnormality such as a sudden increase in the use of the gas equipment of the person to be confirmed can be found from a change in the gas usage tendency of the person to be confirmed in the second cycle unit. That is, a more reliable safety confirmation system can be realized.

Further features are the center,
When receiving a notification from the communication device control unit, and performing an abnormality notification that informs the confirmer that an abnormality may have occurred in the person to be confirmed by the center control unit,
The safety index amount period data stored in the safety index amount period data storage unit of the communication device is acquired, and based on the acquired safety index amount period data, the confirmation person is notified of the safety index amount acquisition period. It is the point comprised so that index quantity information may be notified.

  According to the above characteristic configuration, when the abnormality notification is performed by the center, the safety indicator amount information is also notified to the confirmer. Thereby, the confirmer can confirm the situation before the occurrence of the abnormality, and can grasp the condition of the person to be confirmed more accurately. That is, a more reliable safety confirmation system can be realized.

  In addition, the present invention is suitably implemented by using a gas meter as the safety index output device, using a meter indicator value of the gas meter as the safety index value, and using a relative gas usage amount as the relative safety index amount. be able to.

Overview of the safety confirmation system Configuration diagram of communication equipment and center Mimamori notification sequence diagram Information report notification sequence diagram Conventional diagram of safety confirmation system

[System Overview]
As shown in FIG. 1, the safety confirmation system according to the present invention is configured to notify the confirmer Y of the status of the person to be confirmed X who is the safety confirmation target. Specifically, it is composed of a gas meter 4, a communication device 1, a center 2, and a checker user terminal 3 used by a checker Y provided in the person to be checked X's house. It is configured that the confirmer Y can confirm the safety of the person to be confirmed X by communication from the center 2 to the confirmer use terminal 3. Here, the gas meter 4 corresponds to the “safety index output device” in the present invention, and the meter pointer value corresponds to the “safety index value”.

  The confirmer use terminal 3 may be any device provided with display output means that allows the confirmer Y to display a notification from the center 2. More specifically, it is preferable to use a portable terminal as the confirmer use terminal 3 in consideration of the convenience of the confirmer Y. In the present embodiment, a so-called smartphone is used.

  The gas meter 4 is provided in the residence of the person X to be confirmed, and is configured to detect the amount of gas used by the gas equipment in the house of the person X to be confirmed and output the integrated value of the gas usage as a meter indicator value. In the present embodiment, it is assumed that the confirmed person X is an elderly person living alone. As the confirmer Y, an acquaintance / relative of an elderly person who is the confirmee X is assumed.

  The communication device 1 is configured to acquire the meter pointer value of the gas meter 4 for each first period T1. Here, in the present embodiment, the first period T1 is set to one day. The communication device 1 is configured to be able to communicate with the outside. Specifically, the communication device 1 is configured to receive an external request command so as to acquire the meter pointer value, in addition to transmitting the acquired meter pointer value to the outside. In the present embodiment, an NCU configured to be attachable to the gas meter 4 is used as the communication device 1. The NCU is configured to transmit the acquired meter pointer value of the gas meter 4 to the outside via a telephone line. In addition, in this embodiment, although the communication apparatus 1 has shown the case of the structure provided as a different body from the gas meter 4, the communication apparatus 1 may be incorporated in the gas meter 4. FIG.

  The center 2 is a facility operated by the provider of the safety confirmation system according to the present invention and configured to be communicable with the communication device 1. Specifically, the center 2 and the communication device 1 are connected via a wide area communication network. In the present embodiment, the center 2 and the communication device 1 are connected by a telephone line. As will be described in detail later, the center 2 acquires the meter pointer value of the gas meter 4 via the communication device 1, and notifies the checker user terminal 3 about the safety of the person to be checked X based on the meter pointer value. Any form of notification may be used as long as the confirmer Y can recognize it. In this embodiment, it is comprised so that the information regarding the safety of the to-be-confirmed person X may be notified to the confirmer use terminal 3 in the form of mail. Below, the notification of the information regarding the safety of the person to be confirmed X is referred to as a monitoring notification A1 (see FIG. 3).

  The present invention is characterized in that, in the communication device 1, the center 2 performs basic processing related to safety confirmation that is necessary for transmitting the monitoring notification A1. In addition, the center 2 transmits a monitoring notification A1 to the confirmer using terminal 3 as necessary, and periodically transmits an information report notification A2 (see FIG. 4; details will be described later) to the checker using terminal 3. It is characterized in that Below, the characteristic structure of this invention is demonstrated.

[Communicator configuration]
FIG. 2 shows an internal configuration of the communication device 1 and the center 2 according to the present embodiment. Each unit (12 to 15, 17, and 18 in the figure) of the communication device 1 is configured by an arithmetic device and a storage device. In the present embodiment, an NCU (Network Communication Unit) that can be attached to a gas meter is used as the communication device 1.

  In the present embodiment, the communication device 1 includes a communication unit 16 for performing dial transmission through a telephone line. In addition, a notification destination number storage unit 17 that stores the number of the center 2 as a dialing destination is provided. The communication device 1 includes a clock 100 and is configured to be able to acquire the current time. Moreover, the battery 101 is provided as an electric power source for operating each part in the communication apparatus 1.

In the present embodiment, since the communication device 1 performs basic processing related to safety confirmation, the meter communication unit 11, the pointer storage unit 12, the comparison processing unit 13, the notification determination unit 14, the control unit 15, and the usage period data A storage unit 18 is provided.
The meter communication unit 11 is configured to check the current time using the clock 100 and acquire the meter pointer value v of the gas meter 4 every time the first period T1 elapses. The acquired meter pointer value v is configured to be transmitted to the comparison processing unit 13.

  The comparison processing unit 13 compares the acquired meter pointer value v with the previously acquired meter pointer value v0 to calculate the relative gas usage u. In general, since the gas meter 4 is configured to count the integrated amount, a comparison (specifically, calculation) is required to know the amount of use for a certain period. Specifically, when the meter pointer value v is transmitted from the meter communication unit 11, the comparison processing unit 13 compares the meter pointer value v with the meter pointer value v0 stored in the pointer storage unit 12, and compares the relative value with the relative gas. The usage amount u is calculated. Here, the relative gas usage u is obtained as a difference between the meter pointer value v and the meter pointer value v0. That is, the relative gas usage u corresponds to the gas usage during the first period T1. After calculating the relative gas usage u, the comparison processing unit 13 stores the meter pointer value v used for calculating the relative gas usage u in the pointer storage unit 12 as the meter pointer value v0. Here, the relative gas usage u corresponds to the “relative safety index amount” in the present invention.

  When the meter pointer value v0 is not stored in the pointer storage unit 12, the comparison processing unit 13 does not calculate the relative gas usage u, and uses the transmitted meter pointer value v as the meter pointer value v0. Store in the storage unit 12. In addition, when acquisition of the meter pointer value v fails, a warning may be sent to the center 2 informing that the acquisition of the meter pointer value v has failed.

  The notification determination unit 14 needs a monitoring request notification A0 (see FIG. 3) to the center 2 when the relative gas usage u calculated by the comparison processing unit 13 satisfies a predetermined condition related to the abnormality of the person X to be confirmed. judge. Here, as the predetermined condition, for example, a condition that the relative gas usage u is in a predetermined range may be set. In this embodiment, when the relative gas usage u is close to 0 m3, it is determined that notification to the center 2 is necessary. More specifically, as shown in FIG. 3, the notification determination unit 14 notifies the center 2 that it is necessary to perform the monitoring notification A1 when the relative gas usage u is close to 0 m3. A0 is transmitted.

  Furthermore, in this embodiment, as shown in FIG. 2, the communication device 1 includes a usage period data storage unit 18. The usage period data storage unit 18 stores usage period data U that is a predetermined usage amount acquisition period of the relative gas usage u calculated by the comparison processing unit 13. That is, the usage amount cycle data storage unit 18 stores a plurality of relative gas usage amounts u for the usage amount acquisition period as the usage amount cycle data U. More specifically, each time the relative gas usage u is calculated by the comparison processing unit 13, the calculated relative gas usage u is stored, and the stored amount of the relative gas usage u is used. When the amount acquisition period is reached, the oldest ones are deleted. In the present embodiment, the “use amount acquisition period” is set to be the same as a second period T2 described later. Here, the usage amount period data U, the usage amount acquisition period, and the usage amount period data storage unit 18 are respectively “safety index amount period data”, “safety index amount acquisition period”, “safety index amount period data storage” in the present invention. Part.

  As illustrated in FIG. 3, the control unit 15 performs a notification process to the center 2 when the notification determination unit 14 determines that the monitoring request notification A0 is necessary. Here, the control unit 15 corresponds to a “communication device control unit” according to the present invention. When the control unit 15 receives from the notification determination unit 14 that the monitoring notification A1 is necessary (that is, the monitoring request notification A0), the control unit 15 sends the communication unit 16 to the center 2 that is the transmission destination stored in the notification number storage unit 17. A request for monitoring A0 is transmitted via. The monitoring request notification A0 preferably includes the relative gas usage u calculated by the comparison processing unit 13.

[Center structure]
The center 2 includes a customer information storage unit 20, a communication history storage unit 21, a calendar 22, a customer contact communication unit 23, a control unit 24, a wide area network communication unit 25, a usage history storage unit 26, and a usage period data processing unit 27. The usage amount calling transmission processing unit 28 is configured. Each of these units includes an arithmetic device and a storage device. Here, the control unit 24, the usage amount history storage unit 26, and the usage amount period data processing unit 27 are respectively a "center control unit", a "safety index amount history storage unit", and a "safety index amount period data processing" according to the present invention. Part.

  The control unit 24 of the center 2 is configured to control and manage communication, usage data, customer related information, and the like. In this embodiment, only when receiving the monitoring request notification A0 from the control unit 15 of the communication device 1, performs the monitoring notification A1 that informs the confirmer Y that there is a possibility that an abnormality has occurred in the person to be confirmed X. . Here, the monitoring notification A1 corresponds to the “abnormality notification” according to the present invention.

  The customer information storage unit 20 of the center 2 stores in advance information related to the communication device 1 provided in the person to be confirmed X's house and the confirmer use terminal 3 of the confirmer Y. Specifically, the contact information of the communication device 1 and the confirmer use terminal 3 is stored. The communication history storage unit 21 stores communication histories with the communication device 1 and the confirmer use terminal 3. The calendar 22 is provided for managing dates of communication timing, communication history, usage data, and the like, and is configured to be able to acquire the current date.

  The customer communication communication unit 23 is a communication unit for transmitting the monitoring notification A1 and the information report notification A2 to the checker use terminal 3 of the checker Y. In this embodiment, the customer communication communication unit 23 is configured to be connected to the Internet. Yes. In addition, in order to notify the alarm to the confirmer using terminal 3, the push distribution method is used, and for the browsing request such as past usage data from the confirmer using terminal 3, the pull type distribution method is used. This is advantageous in terms of power consumption.

  The wide area network communication unit 25 is a communication unit for communicating with the communication device 1 installed in the home of the confirmer Y. In the present embodiment, the wide area communication network communication unit 25 is configured to be able to transmit and receive dial signals using a telephone line. Yes. Note that an Internet line may be used together with the communication unit 16 of the communication device 1.

  The usage period data processing unit 27 acquires the usage period data U stored in the usage period data storage unit 18 of the communication device 1 via the wide area communication network communication unit 25 and temporarily stores it. It is configured. In the present embodiment, the usage period data U is obtained from the communication apparatus 1 by requesting the usage period data U from the center 2 to the communication apparatus 1 every second period T2 set longer than the first period T1. It is configured to receive (perform so-called polling processing). In the present embodiment, the second period T2 is set to 7 days. More specifically, the center 2 transmits a notification requesting the usage period data U from the control unit 24 to the communication device 1 via the wide area communication network communication unit 25, and the communication device 1 receives the notification. The control unit 15 is configured to acquire the usage period data U from the usage period data storage unit 18 and transmit the usage period data U to the center 2 via the communication unit 16. Note that the usage period data U may be transmitted from the communication device 1 side to the center 2 at the cycle of the second cycle T2.

  The usage calling transmission processing unit 28 is configured to store a monitoring request notification A0 that is called from the communication device 1. More specifically, for example, it is configured to associate and store the monitoring request notification A0 and the date and time when the monitoring request notification A0 was called. In the present embodiment, the usage amount call transmission processing unit 28 is described separately from the usage amount history storage unit 26, but the usage amount call transmission processing unit 28 is not provided separately, and You may comprise so that the monitoring request notification A0 may be memorize | stored in the same storage area.

  Further, in the present embodiment, the center 2 includes a usage amount history storage unit 26 that stores a history of the usage amount period data U stored in the usage amount period data processing unit 27. That is, the usage history storage unit 26 is configured to store the usage cycle data U of the usage cycle data processing unit 27 as needed, and the usage cycle that is the relative gas usage u for the second cycle T2. A plurality of data U are stored. The usage amount history storage unit 26 is configured to store the usage amount period data U together with the date acquired by the calendar 22 when storing the usage amount period data U. For the following explanation, the past usage cycle data U stored in the usage history storage unit 26 is distinguished as usage cycle data U0.

  As shown in FIG. 3, the center 2 transmits an information report notification A2 to the confirmer use terminal 3 of the confirmer Y every second period T2. Further, the center 2 may acquire the usage period data U from the usage period data storage unit 18 of the gas meter 4 when receiving the request notification A0, and transmit the information report notification A2 together with the monitoring notification A1. In the present embodiment, the information report notification A2 includes three types of notification information: a usage amount notification A21, an operation state notification A22, and a trend change notification A23. Hereinafter, these three types of notification information will be described individually.

  The usage amount notification A <b> 21 includes usage amount information for the usage amount acquisition period based on the usage amount cycle data U stored in the usage amount cycle data processing unit 27. In the present embodiment, as the usage amount information, usage cycle data U in which the relative gas usage u in the second cycle T2 period is sequentially stored is transmitted. More specifically, the control unit 24 assigns the date used to each of the relative gas usage amounts u included in the usage amount period data U using the calendar 22, and confirms the usage amount notification A21 as usage amount information. To the user using terminal 3. Here, the usage amount notification A21 and the usage amount information correspond to “safety index amount notification” and “safety index amount information” according to the present invention, respectively.

  The operation status notification A22 includes whether or not the communication device 1 and the gas meter 4 are operating normally. Specifically, as the operation status notification A22, for example, whether the communication device 1 is functioning normally, whether the gas meter 4 is operating normally, and whether the communication device 1 and the gas meter 4 are normally communicating can be determined. included. These pieces of information can be acquired based on the existence of a period in which the relative gas usage u cannot be acquired normally in the usage cycle data U, for example.

  The trend change notification A23 includes the presence / absence of a change in the trend of the relative gas usage u in the second period T2. The presence or absence of a change in the tendency of the relative gas usage u is determined by the control unit 24 using the usage cycle data U stored in the usage cycle data processing unit 27 and the past usage used in the usage history storage unit 26. It is obtained by comparing and analyzing the period data U0. Specifically, the change in the tendency of the relative gas usage u corresponds to, for example, a change in the average value of the gas usage. By acquiring such information, for example, increase in the number of bathing per day due to progression of cognitive symptoms of person X to be confirmed, increase in frequency of forgetting to stop gas equipment, etc. It becomes possible to detect in the form. Thereby, from the condition that the usage amount is lower than the predetermined value, the possibility that an abnormality has occurred can be detected even in a situation where it is difficult to determine the safety of the person X to be confirmed. That is, it is possible to confirm the safety of the person X to be confirmed with higher accuracy.

  With such a configuration, for example, even in a situation where the person to be confirmed X is healthy and the notification A1 does not occur, the confirmer Y effectively uses the safety confirmation system according to the present invention by receiving the information report notification A2. can do.

[System operation]
[Mimamori notice]
FIG. 3 shows an example of the case where the monitoring notification A1 occurs. As shown in FIG. 4, the communication device 1 transmits a command for requesting meter reading to the gas meter 4. When the meter reading command is received from the communication device 1, the gas meter 4 reads the current meter pointer value v and transmits the meter pointer value v read as a meter reading response to the communication device 1.

  When the communicator 1 receives the meter indicator value v from the gas meter 4, the comparison processing unit 13 calculates the relative gas usage u (“current usage” in the figure), and the notification determination unit 14 satisfies the predetermined condition. Match. Specifically, in this example, it is determined whether or not it is close to 0 (for example, whether the first decimal place is rounded off to 0). If it is not close to 0, it is determined that there is no need for notification, and a transition is made to a standby state without performing notification processing. Thereafter, in the period of the first period T1, a meter reading request is periodically transmitted to the gas meter 4, a meter reading response is received, and a determination process as to whether or not a predetermined condition is met is repeated.

  In the figure, in the third meter-reading response, when the condition “the relative gas usage u is close to 0” is met, a monitoring request notification A0 to the center 2 is performed. Specifically, when the relative gas usage u is approximately 0, the center 2 is notified that an abnormality may have occurred.

  When the center 2 receives the monitoring request notification A0, the center 2 transmits a notification that the relative gas usage u is 0 to the confirmer using terminal 3. By confirming the notification received by the confirmer use terminal 3, the confirmer Y can know that no gas has been used at the confirmee X's home, and something has occurred in the confirmee X. You can check if it is not.

  As described above, the safety confirmation system that suppresses the power consumption of the communication device 1 and the communication cost between the communication device 1 and the center 2, reduces the burden on the confirmer Y, and suppresses misrecognition and oversight. Can be provided.

[Information report notification]
FIG. 4 shows an example when the information report notification A2 occurs. As shown in FIG. 5, the communication device 1 periodically transmits a meter reading request to the gas meter 4, receives a meter reading response, and matches a predetermined condition in the cycle of the first cycle T1, as in FIG. Repeat the determination process.

  On the other hand, the center 2 transmits a command (“7-day data request” in the figure) for requesting the usage period data U stored in the communication device 1 to the communication device 1 at a timing independent of the communication device 1. . The communication device 1 that has received the command transmits the usage period data U to the center 2 (“7-day data response” in the figure).

  When the center 2 receives the usage period data U, the usage period data U is stored in the usage period data processing unit 27, and the control unit 24 uses the usage period data U and the communication history storage unit 21. The amount period data U0 is compared and analyzed, and the presence or absence of a change in the trend of the relative gas usage u is obtained. The information report notification A2 is notified to the confirmer using terminal 3 in a form including the usage amount notification A21, the operation state notification A22, and the trend change notification A23. By confirming the notification received by the confirmer use terminal 3, the confirmer Y can grasp the change in the gas usage tendency at the person to be confirmed X's house, which cannot be grasped only from the monitoring notification A1.

  As described above, it is possible to realize a more reliable safety confirmation system that can detect an abnormality that cannot be known only from the gas usage amount check in the first period.

[Another embodiment]
(1) In the above embodiment, an example in which a gas meter is used as the safety index output device has been shown. However, in the present invention, a value obtained by accumulating index values that can be used for the safety determination of the person X to be confirmed is used. Other devices may be used as long as they output. Specifically, an electric meter, a water meter, or an open / close counter that counts the open / close of a door (such as a toilet or an entrance) existing on a living lead can be used. Here, a combination of a magnet provided on the door and a reed switch for detecting the approach of the magnet can be used for counting the number of times of opening and closing at the opening and closing counter.

(2) In the above-described embodiment, an example of a configuration in which the center 2 performs the information report notification A2 has been described, but a configuration in which the center 2 performs only the monitoring report A1 may be employed. In this case, the communication device 1 may be configured not to include the usage amount period data storage unit 18.

(3) In the above embodiment, an example has been shown in which the center 2 includes all three types of information notifications of the usage amount notification A21, the operation state notification A22, and the trend change notification A23 as the information report notification A2. You may comprise so that any one of these three types or arbitrary combinations may be included.

(4) In the above embodiment, the confirmer Y is assumed to be an acquaintance / relative of the elderly who is the person to be confirmed X, but may be a local government or a welfare organization.

(5) In the above-described embodiment, examples of telephones and the Internet are shown as the communication method. However, a cellular phone network such as PHS and LTE, and a public wireless LAN can also be used.

1: Communication device 2: Center 4: Gas meter (safety index output device)
13: Comparison processing unit 14: Notification determination unit 15: Control unit (communication device control unit)
18: Usage amount period data storage unit (safety index amount period data storage unit)
24: Control unit (center control unit)
26: Usage amount history storage unit (safety index amount history storage unit)
27: Usage amount period data processing unit (safety index amount period data processing unit)
A0: Request notification A1: Monitor notification (abnormal notification)
A21: Usage amount notification (safety indicator amount notification)
A22: Operation status notification A23: Trend change notification T1: First cycle T2: Second cycle U: Usage amount cycle data (safety indicator amount cycle data)
U0: Usage amount cycle data (safety index amount cycle data)
X: Confirmed person Y: Confirmed person u: Relative gas consumption (relative safety index amount)
v: Meter guideline value (safety index value)
v0: Meter guideline value (safety index value)

Claims (6)

A safety indicator output device provided in the residence of the confirmed person and capable of cumulatively outputting a safety index value serving as an index when judging the safety of the confirmed person, and a safety index value output by the safety index output device For each first cycle and communicating with the outside, a center configured to be able to communicate with the communication device,
A safety confirmation system configured to enable a confirmer to confirm the safety of the person to be confirmed based on the safety index value by communication from the center,
The communication device is
A comparison processing unit that calculates a relative safety index amount by comparing the acquired safety index value with a safety index value acquired in the past;
A notification determination unit that determines that notification to the center is necessary when the relative safety index amount calculated by the comparison processing unit satisfies a predetermined condition relating to the abnormality of the person to be confirmed;
A communication device control unit that performs notification processing to the center when the notification determination unit determines that notification is necessary,
The center
A safety confirmation system comprising a center control unit for notifying the confirmer that there is a possibility that an abnormality has occurred in the confirmed person only when a notification from the communication device control unit is received. The communication device is
A safety index amount period data storage unit for storing safety index amount period data corresponding to a predetermined safety index amount acquisition period of the relative safety index amount calculated by the comparison processing unit;
The center
The safety index amount cycle data stored in the safety index amount cycle data storage unit is configured to obtain every second cycle set longer than the first cycle,
A safety index amount period data processing unit for storing the acquired safety index amount period data;
The center control unit
Based on the safety index amount period data stored in the safety index amount period data processing unit, the safety index amount for notifying the confirmer of the safety index amount information of the safety index amount acquisition period for each second period The safety confirmation system according to claim 1, which performs notification. The center control unit
Based on the safety index amount period data stored in the safety index amount period data processing unit, in addition to the safety index amount notification, notifies whether the communication device and the safety index output device are operating normally. The safety confirmation system according to claim 2, wherein an operation status notification is performed. The center
A safety index amount history storage unit for storing a history of the safety index amount period data stored in the safety index amount period data processing unit;
The center control unit
The safety index amount period data stored in the safety index amount period data processing unit is compared with past safety index amount period data stored in the safety index amount history storage unit, and the trend of the relative safety index amount The safety confirmation system according to claim 2 or 3, wherein a trend change notification for analyzing and notifying whether or not there is a change is performed. The center
When receiving a notification from the communication device control unit, and performing an abnormality notification that informs the confirmer that an abnormality may have occurred in the person to be confirmed by the center control unit,
The safety indicator amount period data stored in the indicator amount period data storage unit of the communication device is acquired, and based on the acquired safety indicator amount period data, the safety indicator of the safety indicator amount acquisition period is sent to the confirmer. The safety confirmation system as described in any one of Claims 2-4 comprised so that amount information might be notified. As the safety indicator output device, using a gas meter,
Using the meter indicator value of the gas meter as the safety index value,
The safety confirmation system according to any one of claims 1 to 5, wherein a relative gas usage amount is used as the relative safety index amount.

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