JP2013178852A - System, method, and program for watching single living person - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system, method, and program for watching a single living person, which is capable of detecting actions of each single living person in each time zone and comparing information of family units on the basis of the time zone to more accurately detect abnormality.SOLUTION: A state transition determination unit 101 obtains a type of state transition from an operation signal of a household electrical appliance 4, which is received from a sensor 5, and a time acquisition unit 102 acquires the appearance time of an appliance state, and a time zone conversion unit 103 converts the appearance time to a time zone in accordance with time zone DB 107, and a rule extraction unit 104 extracts a rule and a risk level and a certainty factor corresponding to the rule, from a rule DB 108 on the basis of the time zone and the type of state transition, and a risk level and certainty factor processing unit 105 compares a total appearance frequency of state transition in the time zone with a past average appearance frequency and, in the case of the comparison result meeting the rule, obtains the risk level and the certainty factor corresponding to the rule and transmits them to an output unit 106, and the output unit 106 displays the risk level and the certainty factor.

Description

  The present invention relates to a system, a method, and a program for detecting a safety status of a single person and issuing an alarm to a supervisor.

  In recent years, the number of elderly living alone has increased due to the aging population. Since these people have poor contact with neighbors and society, they may die lonely without being known to the surroundings, and are regarded as social problems.

  For the above reasons, in order to watch over a single person, a system for detecting the safety state of a single person has been proposed focusing on the operation state and the operation time of a home appliance in a single person household.

  For example, Patent Document 1 detects the operating state (continuous operation time, continuous non-operation time, etc.) of home appliances in the monitoring subject's residence based on the energization information, and the management organization outside the residence manages this information. By doing so, the life monitoring system which transmits information to the supervisor is disclosed.

  Further, Patent Document 2 detects the operation state of home appliances based on electrical signals on the distribution network of the monitoring subject's residence, and probabilistically monitors the behavior of the monitoring subject using tracking data generated from such information. A remote person tracking device for evaluation is disclosed.

JP 2004-86383 A JP 2007-48265 A

  However, the life monitoring system disclosed in Patent Literature 1 has a predetermined value for abnormality detection for each home appliance, and compares the detected continuous operation time or continuous non-operation time with this specified value. .

  For this reason, there is a problem in that when a prescribed value that does not apply to the life rhythm of each individual person to be monitored is defined, erroneous detection is performed.

  Furthermore, since the rhythm of life in each household is usually different, it is not possible to make a judgment by comparing multiple households, and whether the detected abnormality is a situation specific to that household or a situation that can occur in general. There is a problem that it cannot be judged.

  In addition, the remote person tracking device disclosed in Patent Document 2 divides a day into several time zones and weights them based on the tracking data of the monitoring subjects within the time zones, and probabilistically monitors The behavior of the person.

  However, since this divided time zone is fixed in advance, as in the invention disclosed in Patent Document 1, if a time zone that does not apply to the life rhythm of each individual monitoring subject is defined, a false detection is performed. There is a problem of end.

  Furthermore, since the rhythm of life in each household is usually different, it is not possible to make a judgment by comparing multiple households, and whether the detected abnormality is a situation specific to that household or a situation that can occur in general. There is a problem that it cannot be judged.

  The present invention has been made in view of the above circumstances, can detect the behavior of each single person for each time zone, and can further compare information between households based on that time zone, more accurately abnormal The purpose is to provide a solitary watch system, a solitary watch method, and a program.

In order to achieve the above object, a solitary watching system according to the first aspect of the present invention is:
Operation status detection means for detecting the duration of no operation of home appliances operated by a single person,
Rule storage means for storing the duration of no operation and the added value for the time zone for each normalized time zone set in advance,
A time zone specifying means for specifying a time zone to which the current time belongs from among the time zones embodied according to the standards determined for each single person;
Accumulating means for obtaining and accumulating an addition value corresponding to the time zone specified by the time zone specifying means according to the duration detected by the operation status detecting means;
Safety information obtaining means for obtaining safety information of a single person based on the accumulated value by the accumulation means,
Output means for outputting the safety information acquired by the safety information acquisition means;
Comprising
It is characterized by that.

The solitary watching program according to another aspect of the present invention is:
On the computer,
An operation status detection step for detecting a duration of no operation of the home appliance operated by a single person,
A rule storage step for storing a rule that associates the duration of no operation with the added value for the time zone for each preset normalized time zone;
A time zone specifying step for specifying a time zone to which the current time belongs from among the time zones embodied according to the criteria set for each single person;
According to the duration detected in the operation status detection step, an accumulation step for accumulating the addition value corresponding to the time zone specified in the time zone specification step from the rule;
Safety information acquisition step for obtaining safety information of a single person based on the accumulated value by the accumulation step;
Outputting the safety information acquired by the safety information acquisition step;
It is characterized by that.

The solitary watching method according to another aspect of the present invention is as follows:
A single person monitoring method executed by a single person monitoring system that detects an abnormality of a single person,
An operation status detection step for detecting a duration of no operation of the home appliance operated by a single person,
A rule storage step for storing a rule that associates the duration of no operation with the added value for the time zone for each preset normalized time zone;
A time zone specifying step for specifying a time zone to which the current time belongs from among the time zones embodied according to the criteria set for each single person;
According to the duration detected in the operation status detection step, an accumulation step for accumulating the addition value corresponding to the time zone specified in the time zone specification step from the rule;
Safety information acquisition step for obtaining safety information of a single person based on the accumulated value by the accumulation step;
An output step of outputting the safety information acquired by the safety information acquisition step,
It is characterized by that.

  According to the present invention, it is possible to detect the behavior of each solitary person for each time zone, and further compare information between households based on the time zone. A person watching method and program can be provided.

It is a block diagram which shows the structure of the single person watching system which concerns on 1st Embodiment. It is an example of the classification | category and definition of a time slot | zone according to the life rhythm of each single-person household which concerns on embodiment of this invention. It is an example of the rule database which concerns on 1st Embodiment. It is an example of the log | history information database which concerns on 1st Embodiment. It is a flowchart which shows an example of operation | movement of the single person watching system which concerns on 1st Embodiment. It is a flowchart which shows an example of operation | movement of the risk and reliability process which concern on 1st Embodiment. It is a specific example of the calculation method of the risk level and the certainty level according to the first embodiment. It is a block diagram which shows the structure of the single person watching system which concerns on 2nd Embodiment. It is an example of the log | history information database which concerns on 2nd Embodiment. It is an example of the rule database which concerns on 2nd Embodiment. It is a flowchart which shows an example of operation | movement of the single person watching system which concerns on 2nd Embodiment. It is a flowchart which shows an example of operation | movement of the risk and reliability process which concern on 2nd Embodiment. It is a specific example of the calculation method of the risk level and the certainty level according to the second embodiment. It is a block diagram which shows the structure of the single person watching system which concerns on 3rd Embodiment. It is an example of the electrical information database which concerns on 3rd Embodiment. It is a flowchart which shows an example of operation | movement of the single person watching system which concerns on 3rd Embodiment. It is a block diagram which shows an example of the hardware constitutions of the single person watching system which concerns on embodiment of this invention.

  A single person watching system according to an embodiment of the present invention will be described with reference to the drawings.

  In the present invention, the risk level is obtained by dividing a predetermined risk to be watched over into one or more stages, and the certainty level indicates a degree to which the risk level is reliable.

[First Embodiment]
A single person watching system according to the present embodiment will be described with reference to FIGS.

  First, FIG. 1 is a block diagram showing a configuration of a single person watching system according to the first embodiment of the present invention. The single person watching system 1 according to this embodiment includes a single person watching apparatus 100, a home appliance 4, a sensor 5, a network 6, and a single household 8.

  The solitary watching device 100 includes a state transition determination unit 101, a time acquisition unit 102, a time zone conversion unit 103, a rule extraction unit 104, a risk and certainty degree processing unit 105, an output unit 106, and a time zone. A database (hereinafter referred to as time zone DB) 107, a rule database (hereinafter referred to as rule DB) 108, and a history information database (hereinafter referred to as history information DB) 109 are configured.

  In this embodiment, the household electrical appliance 4 indicates a household electrical appliance that is used with electric power of a general household that is installed in a single household 8 to be monitored. For example, devices such as a refrigerator, a microwave oven, and a rice cooker are applicable.

  The sensor 5 is a sensor attached to or around the home appliance 4 and is configured using one or a plurality of sensors that detect an operation state when the home appliance 4 operates. One or a plurality of information on the current operation state of the home appliance 4 is acquired, and the network 6 is transmitted with the information on the operation state of the home appliance 4 as a signal at a certain time interval or when the state of the home appliance 4 changes. To the state transition determination unit 101.

  The state transition determination unit 101 converts the operation state of the home appliance 4 received from the sensor 5 via the network 6 into a specific device state, obtains the presence / absence of the state transition of the home appliance 4, and the state transition occurs. If it is, the appearance time of the device state is received from the time acquisition unit 102 and transmitted to the time zone conversion unit 103 together with the type of state transition. If no state transition has occurred, the process ends.

  As described above, the time acquisition unit 102 acquires the appearance time of the device state.

  The time zone DB 107 stores in advance data in which a period of one day or one week is classified into a plurality of life times according to the life rhythm of each single-person household 8. Furthermore, data classified by season and month may be stored in advance.

  The time zone conversion unit 103 refers to the time zone DB 107, converts the appearance time received from the state transition determination unit 101 to the time zone defined in the time zone DB 107, and further, the time immediately before that time zone. A band (hereinafter referred to as a working time slot) is obtained and transmitted to the rule extraction unit 104 together with the type of state transition received from the state transition determination unit 101.

  The rule DB 108 stores a rule related to the number of appearances of the state transition type and safety information extracted when the rule matches. The safety information includes a risk level and a certainty level. This rule is stored for each type of state transition, and there are as many times as there are time zones stored in the time zone DB 107.

  Based on the two elements of the work time zone and the state transition type received from the time zone conversion unit 103, the rule extraction unit 104 selects a rule corresponding to the element from among a plurality of rules in the rule DB 108, All the risk and certainty corresponding to the rule are extracted, and the history based on the work time zone and the type of state transition is accumulated in the history information DB 109. Furthermore, the work time zone and the type of state transition, the rules extracted from the rule DB 108, the degree of danger, and the degree of certainty are transmitted to the degree of danger and certainty degree processing unit 105.

  The history information DB 109 stores the number of appearances of the type of state transition in the past time zone by receiving the time zone and the type of state transition from the rule extraction unit 104 described above.

  The risk and certainty factor processing unit 105 checks the rule received from the rule extraction unit 104 based on the work time zone and the state transition type received from the rule extraction unit 104, and the number of appearances extracted from the history information DB 109. And the degree of risk and certainty are obtained, and the obtained degree of risk and certainty are transmitted to the output unit 106. If the rule does not match, the alarm is not yet generated, and information indicating that there is no abnormality in the status of the solitary person is transmitted to the output unit 106.

  The output unit 106 displays the degree of risk and the degree of certainty transmitted from the degree of risk and certainty factor processing unit 105. The displayed risk level is compared with the certainty level to determine whether the alarm is appropriate. When information indicating that there is no abnormality in the status of the solitary person is received, a display indicating that there is no abnormality in the status of the solitary person is displayed.

  FIG. 2 is an example of data stored in the time zone DB 107 in this embodiment. The single person's day is classified into five time zones, and from 6 am to 11 am “morning” time, from 11 am to 16:00 “daytime”, and from 16:00 to 20:00 “evening” ”From 20:00 to 23:00“ night ”, from 23:00 to 6:00“ sleeping ”, and Monday through Friday of the week, weekdays, Saturday, and Sunday are holidays. By classifying into 10 time zones, a total of 10 time zones are classified. In addition, how to divide these may differ for every single household 8.

  FIG. 3 is an example of data stored in the rule DB 108 in this embodiment. For example, when the home appliance 4 is a refrigerator, there is a rule for state transition from opening to closing of the refrigerator, and there are other rules (not shown) such as closing from the refrigerator to opening.

  FIG. 4 is an example of data stored in the history information DB 109 in this embodiment. For example, when the home appliance 4 is a refrigerator, the number of appearances of the state transition from open to closed and from the closed to open state that appears before the appearance time of the state transition of the refrigerator is accumulated. Similarly, the past number of appearances is stored for other devices (home appliances other than the refrigerator) and other state transitions.

  FIG. 5 is a flowchart showing an example of the solitary watching process in the present embodiment.

  First, when a change occurs in the operation state of the home appliance 4, the sensor 5 transmits the operation state of the home appliance 4 as a signal via the network 6.

  For example, when the home appliance 4 is a refrigerator, the open / close states of the refrigerator doors and lids are collected using an existing open / close sensor. Furthermore, power consumption information can be collected using an existing power sensor.

The state transition determination unit 101 receives a signal from the sensor 5 via the network 6 (S101), and specifies a transmission source.
Thereafter, the solitary watching system 1 operates based on the time zone and rules set for the specified solitary person. However, for ease of understanding, we will not mention them one by one.
First, the state transition determination unit 101 converts the received signal into a specific device state (S102).

  Furthermore, the type of state transition is obtained by comparing with the previously converted device state (S103), and when the state transition has occurred (S104; Yes), the time acquisition unit 102 acquires the device state appearance time (S105). Along with the type of state transition, it is transmitted to the time zone conversion unit 103. If no state transition has occurred, the process is terminated (S104; No).

  For example, when the home appliance 4 is a refrigerator and the sensor 5 is an open / close sensor attached to the door of the refrigerator, the state transition determination unit 101 outputs an operation signal of the home appliance 4 received from the sensor 5 via the network 6 to the door. Convert to open or closed state. Furthermore, a state transition such as a transition from the open state to the closed state or a transition from the closed state to the open state is obtained in comparison with the previous device state.

  The time zone conversion unit 103 converts the received device state appearance time into a time zone with reference to the time zone DB 107 (S106), further obtains a work time zone (S107), and receives it from the state transition determination unit 101 Along with the type of state transition, it is transmitted to the rule extraction unit 104.

  For example, when the data stored in the time zone DB 107 is the data shown in FIG. 2, if the appearance time of the device state is 13:00, the time zone corresponding to 13:00 is as shown in FIG. “Daytime” time. Since the previous time zone is the “morning” time zone, the work time zone is transmitted to the rule extracting unit 104 as “morning”.

  The rule extraction unit 104 accumulates the history based on the received time zone and the type of state transition in the history information DB 109 (S108), further refers to the rule DB 108, and applies the rule corresponding to the work time zone and the state transition type. Then, the risk level and the certainty level corresponding to the rule are extracted (S109), and the type of work time zone and state transition, the extracted rule, the risk level and the certainty level are transmitted to the risk level and certainty level processing unit 105. To do.

  The degree-of-risk and certainty factor processing unit 105 executes the degree-of-risk and certainty factor process (S110), obtains the degree of danger and the certainty factor of the single person, and transmits them to the output unit 106.

  Based on the information received from the risk and certainty processor 105, the output unit 106 determines whether or not an alarm is generated. When the alarm is generated (S111; Yes), the received risk and certainty are displayed. (S112) When the alarm is not generated, the process is terminated (S111; No).

  FIG. 6 is a flowchart illustrating an example of risk level and certainty level processing in the present embodiment.

  First, the risk and certainty factor processing unit 105 obtains the number of appearances of state transitions in the work time zone received from the rule extraction unit 104 (S201).

  Next, from the past history information extracted from the history information DB 109, the number of appearances of state transitions up to the work time zone is acquired, and the average number of appearance times per time zone is obtained (S202).

  Next, according to the rule received from the rule extraction unit 104, the number of appearances of the state transition in the work time zone obtained above (the value obtained in S201) and the work time zone obtained from the past history information The average number of appearances (value obtained in S202) is compared, and it is determined whether or not it matches the rule (S203). If it matches the rule (S203; Yes), the process proceeds to the next step to obtain the risk and certainty. If it does not match the rule (S203; No), it is not yet a stage to generate an alarm. Information that no alarm is generated is transmitted to the output unit 106 (S206).

  If the rule matches, the risk and certainty corresponding to the rule are acquired (S204). The risk level and the certainty level become the state of the solitary person, and the risk level and the certainty level are transmitted to the output unit 106 (S205).

  Hereinafter, for easy understanding, a specific calculation method of the risk and certainty factor processing unit 105 described above will be described with reference to FIG.

  The open / close state of the refrigerator on weekday morning and noon is transitioned as shown in FIG. 7A, the work time zone is weekday morning, and the type of state transition that triggered the start of operation is from open. In the case of the state transition to the closed state, it can be obtained once in S201 of FIG. 6 as shown in FIG. 7B.

  Next, if the history information stored in the history information DB 109 is the data shown in FIG. 4 and this value is history information for the past week, the state transition from open in the morning on weekdays to closed is shown. The total number of appearances is 15, and the average number of appearances is 3 (15 ÷ 5) as shown in FIG. 7C in S202 of FIG.

  Next, when the rule for the state transition from opening to closing in the morning on weekdays is “the number of appearances of state transition is less than 50% of the average number of appearances” as shown in FIG. When this is applied to the value obtained above and compared, the number of state transitions from open to closed is 1, and 50% of the average number of appearances in the past is 1.5 (3 times × 0.5). Therefore, it matches the rule.

  When the matched rule is referred to, the risk level and the certainty level corresponding to the matched rule become a risk level 5 and a certainty level 40, respectively. For this reason, as shown in FIG. 7 (e), the risk level and the certainty level are transmitted to the output unit 106. In the present embodiment, as the risk level and the certainty level, the risk level and the certainty level corresponding to the matched rule are used as they are, but not limited thereto. For example, it is good also as the safety information of a single person for the value which weighted the risk degree and the certainty degree for each single person.

  In the above embodiment, in order to detect the movement of the single person himself, that is, the operation (done) of the home appliance, the state of the electronic device is detected, and further, the operation is detected from the detected change in the state. A center 5 that directly detects an operation by a single person (for example, an opening operation, a closing operation, an on operation, an off operation, a moving operation, a gripping operation, etc.) is arranged, and the output of the sensor 5 is output by the single person watching system 1. You may make it receive.

  Moreover, in the said embodiment, based on ratio of the past average number of operation of the same time slot | zone, and the count value (number of operation) decided in the latest time slot | zone, the risk and the certainty degree were calculated | required. However, it is not limited to the past average value, and may be a representative value or the like.

Moreover, although the example which calculates | requires a danger level and a certainty factor based on the count value of the time slot | zone immediately before the time slot to which the present time belongs was shown, it is arbitrary whether the count value decided in which time slot is used. Yes. For example, it is also possible to obtain the risk level and the certainty level based on the count values of a predetermined time zone two or three times before the time zone to which the current time belongs.
Further, not only the risk level and the certainty level may be obtained based on the count value in one time zone, but the count values determined in a plurality of time zones may be used. For example, it is also possible to obtain the degree of risk and the certainty based on the count values of the five time zones for the most recent day in the time zone to which the current time belongs. In this case, for example, the risk level and the certainty level may be individually determined for each of the latest five time zones, and finally, an average value, a representative value, and the like may be determined.

By adopting the configuration of the present embodiment, the following advantages are born.
First, define a time zone according to the life rhythm of a single person in each household, the number of occurrences of state transition of a certain device, and the average of the state transition per time period until the state transition of the device appears Since it is configured to compare the number of appearances and obtain the degree of risk and certainty, an abnormality can be detected without destroying the life rhythm of a single person.
Next, it is possible to compare anomaly detection results even among single persons with different life rhythms by comparing the anomaly detection results between households based on the time zone classified according to the individual living alone in each household Become.

[Second Embodiment]
A single person watching system according to the present embodiment will be described with reference to FIGS.

  First, FIG. 8 is a block diagram showing a configuration of a solitary watching system according to the second embodiment of the present invention. The solitary watching system 2 of the present embodiment includes a solitary watching device 200, a home appliance 4, a sensor 5, a network 6, and a solitary household 8.

  The configuration of the solitary watching device 200 is the same as in the first embodiment. The state transition determination unit 101, the time acquisition unit 102, the time zone conversion unit 103, the rule extraction unit 104, the risk level and certainty level processing unit. 105, an output unit 106, a time zone DB 107, a rule DB 108, and a history information DB 109.

  In the present embodiment, the home appliance 4 and the sensor 5 have the same configuration as the single person watching system 1 according to the first embodiment, and the output unit 106 is the same as the single person watching apparatus 100 according to the first embodiment. Therefore, the description is omitted here.

  In addition, the definition of the time slot | zone according to the life rhythm of each individual household 8 in a present Example shall also have the meaning equivalent to the definition in 1st Embodiment.

  The history information DB 109 stores the last certainty calculation time (hereinafter referred to as processing completion time), appearance time, risk, and certainty corresponding to the device state.

  Similarly to the first embodiment, the state transition determination unit 101 converts the operation state signal of the home appliance 4 received from the sensor 5 via the network 6 into a specific device state, and the state of the home appliance 4 The transition is obtained, and the appearance time and the processing completion time of the device state are received from the time acquisition unit 102.

  If state transition has occurred, the history information DB 109 is initialized, and the process ends.

  When the state transition has not occurred, the history information DB 109 is updated, and the device state, its appearance time and processing completion time are transmitted to the time zone conversion unit 103.

  As described above, the time acquisition unit 102 refers to the appearance time of the device state and the history information DB 109 to acquire the processing completion time.

  The time zone conversion unit 103 refers to the time zone DB 107, converts the appearance time and processing completion time received from the state transition determination unit 101 to the time zone defined in the time zone DB 107, and from the state transition determination unit 101 It transmits to the rule extraction part 104 with the received apparatus state.

  The rule DB 108 stores in advance rules defined for each degree of danger and for each time period. This rule is a parameter necessary for obtaining the certainty factor, and the certainty factor is increased using the parameter according to the time elapsed from the process completion time to the appearance time.

  Based on the time zone and the device state received from the time zone conversion unit 103, the rule extraction unit 104, from a plurality of rules in the rule DB 108, a rule corresponding to the time zone and the device state converted from the appearance time, A rule corresponding to the time zone and device status converted from the completion time and a risk level corresponding to the device status are extracted, and each extracted rule and risk level and the time zone received from the time zone conversion unit 103 are identified as dangerous. Degree and certainty factor processing unit 105.

  The risk level and certainty factor processing unit 105 obtains the risk level and the certainty factor based on the rule received from the rule extraction unit 104, and transmits the obtained risk level and certainty factor to the output unit 106.

  FIG. 9 is an example of data stored in the history information DB 109 in the present embodiment. For example, when the home appliance 4 is a refrigerator, the process completion time, appearance time, risk level, and certainty level corresponding to the device state (open state or closed state) are accumulated. Although not shown in the drawing, the processing completion time, the appearance time, the risk level, and the certainty level corresponding to the device state are similarly stored for the other devices and other states.

  FIG. 10 is an example of data stored in the rule DB 108 in this embodiment. For example, when the home appliance 4 is a refrigerator, there is a rule for an open state for each time zone. In the rule of FIG. 10, when the certainty factor is 0, the parameter added to the processing completion time to obtain the initial value of the certainty factor from the time elapsed from the processing completion time to the appearance time is the initial time, The parameter to be assigned to the certainty factor is an initial value, and when the certainty factor is other than 0, the parameter to be added to the process completion time to increase the certainty factor from the elapsed time is the increased time, and the parameter to be added to the certainty factor at that time Is expressed as an increase value.

  FIG. 11 is a flowchart showing an example of the solitary watching process in the present embodiment.

  First, when a change occurs in the operation state of the home appliance 4, the sensor 5 transmits the operation state of the home appliance 4 as a signal via the network 6. For example, when the home appliance 4 is a refrigerator, the sensor 5 transmits the open / close state of the refrigerator door, lid, and the like, as in the first embodiment.

  The state transition determination unit 101 receives a signal from the sensor 5 via the network 6 (S301), and converts the received signal into a specific device state (S302). Further, the type of state transition is obtained by comparison with the previously converted device state (S303), and the appearance time and processing completion time of the device state are acquired from the time acquisition unit 102 (S304).

  When the state transition has occurred (S305; Yes), the previously processed item in the history information DB 109 is initialized (S306), the processing completion time is replaced with the appearance time, and the history information DB 109 is accumulated (S307). The process ends.

  When the state transition has not occurred (S305; No), the device state and the appearance time are accumulated in the history information DB 109 (S308), and the device state, the appearance time and the processing completion time are transmitted to the time zone conversion unit 103. To do.

  The time zone conversion unit 103 refers to the time zone DB 107, converts the received appearance time and processing completion time into a time zone (S309), and transmits the time zone together with the device status to the rule extraction unit 104.

  The rule extraction unit 104 refers to the rule DB 108 based on the received device state and time zone, and the time zone converted from the appearance time, the rule corresponding to the device state, the time zone converted from the processing completion time, The rule corresponding to the device state and the risk corresponding to the device state are extracted (S310), and transmitted to the risk and certainty degree processing unit 105 together with the device state and the time zone.

  The degree-of-risk / confidence processing unit 105 executes the degree-of-risk / confidence processing (S311), obtains the degree of risk and the certainty of the single person, and transmits it to the output unit 106.

  Based on the information received from the risk and certainty processing unit 105, the output unit 106 determines whether or not an alarm is generated (S312), and when the alarm is generated, displays the received risk and certainty (S313). ) If no alarm is generated, the process is terminated.

  FIG. 12 is a flowchart illustrating an example of risk level and certainty level processing in the present embodiment.

  The risk and certainty factor processing unit 105 extracts the certainty factor corresponding to the device state stored in the history information DB 109, and determines whether or not the certainty factor is 0 (S401). When the certainty factor is 0 (S401; Yes), it indicates that an alarm has not yet occurred, and the process proceeds to the next step in order to apply the initial time and the initial value in the rule received from the rule extraction unit 104. When the certainty factor is not 0 (S401; No), it indicates that an alarm has already been generated from the previous operation, and the process proceeds to a step for applying the increase time and the increase value in the rule received from the rule extraction unit 104. .

  Next, when the certainty factor extracted from the history information DB 109 is 0, if the initial time is added to the processing completion time corresponding to the device state stored in the history information DB 109, does the time exceed the appearance time? If it does not exceed (S402; No), the process proceeds to the next step, and if it exceeds (S402; Yes), since it is not yet a stage for generating an alarm, the risk level and the certainty level are obtained. In addition, information that no alarm is generated is transmitted to the output unit 106.

  In the above, if the appearance time is not exceeded even if the initial time is added to the process completion time, the initial time is added to the process completion time corresponding to the device state stored in the history information DB 109 (S403). An initial value is substituted for the certainty level, and a risk level corresponding to the device state is substituted for the risk level (S404).

  Next, when the increase time is added to the process completion time corresponding to the device state stored in the history information DB 109, it is determined whether or not the appearance time is exceeded (S405), and if not exceeded (S405; Yes), the next When it progresses to a step and exceeds (S405; No), the risk and the certainty corresponding to the device state are transmitted to the output unit 106 (S408).

  In the above, if the appearance time is not exceeded even if the increase time is added to the process completion time, the increase time is added to the process completion time corresponding to the device state stored in the history information DB 109 (S406). The increment value is added to the degree (S407), and the process returns to the above-described determination (S405). When the time zone is changed by adding the increased time to the process completion time, the time zone converted from the process completion time is updated to the next time zone. The next time zone is, for example, the time zone as shown in FIG. 2 in the first embodiment, and the time zone converted from the processing completion time is the “daytime” time zone. The time zone is “Evening”. If the time zone updated from the processing completion time is the “sleeping” time zone, the next time zone is “morning”.

  Hereinafter, in order to facilitate understanding, a specific calculation method of the risk and certainty factor processing unit 105 described above will be described with reference to FIG.

  First, FIG. 13A shows, for example, each parameter of the open state of the refrigerator door in the history information DB 109 when the home appliance 4 is a refrigerator. In the stage of FIG. This is a state initialized by the unit 101. At this time, it is assumed that the refrigerator door is closed and the state transition determination unit 101 detects the closed state.

Here, when the refrigerator door is opened, the sensor 5 acquires the open state, the state transition determination unit 101 determines that the state transition has occurred, and the time acquisition unit 102 as illustrated in FIG. The appearance time of the open state of the refrigerator is substituted into the process completion time received from, and the process completion time and appearance time of the item of the open state of the refrigerator are updated in the history information DB 109.

  Next, in FIG. 13C, the time has passed since the previous time, the open state of the refrigerator door is acquired again by the sensor 5, and the state transition determination unit 101 determines that the state transition has not occurred, and the refrigerator This means that the appearance time has been updated.

  In the case of FIG. 13C, since the certainty factor is 0, the process proceeds to the next step (S402 in FIG. 12) in S401 in FIG.

  When the rule extracted by the rule extraction unit 104 is the rule shown in FIG. 13 (i), the initial time of the open rule in the noon time zone on weekdays is 45 minutes. In this case, FIG. 13 (c) Then, even if the initial time of 45 minutes is added to the process completion time, the appearance time is not exceeded, so the process proceeds to the next step (S403 in FIG. 12).

  Next, in FIG. 13D, the initial time of 45 minutes is added to the processing completion time of FIG. 13C by the processing of S403 and S404 in FIG. The value corresponding to the open state of the refrigerator is substituted.

  In FIG. 13D, if the increase time 20 minutes is added to the process completion time, it exceeds the appearance time, so the process ends in S405 of FIG. 12, and the output unit 106 displays the risk level ( 5) and the certainty factor (10) are displayed.

  Next, FIG.13 (e) is the state which further detected time from the state of FIG.13 (d), detected the open state of the refrigerator door again, and updated the appearance time. In this state, since the certainty factor is not 0, the process proceeds from S401 in FIG. 12 to S405 in FIG. In FIG. 13 (e), even if the increase time 20 minutes of the rule for the noon time zone on weekdays in FIG. 13 (i) is added to the processing completion time, it does not exceed the appearance time, so the next step (FIG. 12). The process proceeds to S406).

  Next, in FIG. 13 (f), an increase time of 20 minutes is added to the process completion time from the state of FIG. 13 (e) by the processing of S406 and S407 of FIG. 12, and an increase value of 10 is added to the certainty factor. State.

  Next, in FIG. 13 (g), in the determination in S405 of FIG. 12 again, even if the increase time of 20 minutes is added to the processing completion time of FIG. 13 (f), the appearance time is not exceeded. And the process of S407 is a state in which the increase time 20 minutes is added to the process completion time and the increase value 10 is added to the certainty factor. However, since the time zone corresponding to the processing completion time after the addition transitions from noon to evening, when the next increase time and the certainty factor are added, the rule of the open state in the evening time zone of the refrigerator is Will be applied.

  Next, FIG. 13 (h) shows the appearance time even when the increase time 10 minutes of the rule of the weekday evening time zone is added to the processing completion time of FIG. 13 (g) in the determination of S405 of FIG. 12 again. Therefore, the process of S406 and S407 in FIG. 12 is a state in which an increase time of 10 minutes is added to the process completion time and an increase value of 15 is added to the certainty factor. Returning to the determination in S405 of FIG. 12 from this state again, if the increase time of 10 minutes is added to the processing completion time of FIG. ) Risk level (5) and certainty level (45).

  As in the above-described embodiment, the method of adding the processing completion time and the certainty factor when the time zone transitions by adding the processing completion time is the increase time and the certainty factor of the rule of the time zone corresponding to the processing completion time. The increase value of the certainty may be added, for example, and the increase time of the rule in the time zone corresponding to the appearance time may be added. In addition, the time from the processing completion time to the turn of the time zone is obtained, the ratio of the increased time of the rule of the time zone corresponding to that time and the processing completion time is obtained, and the value multiplied by the confidence is added to the confidence. However, the time at which the time zone changes may be updated to the processing completion time.

By adopting the configuration of the present embodiment, the following advantages are born.
First, because it is configured to determine the degree of risk and certainty according to the elapsed time of the state of a certain device, and defines the time zone according to the life rhythm of each single person in the household as in the first embodiment, Abnormalities can be detected without disrupting the rhythm of living alone.
Next, in the same way as in the first embodiment, by comparing the abnormality detection results between households based on the time zone classified according to the single person in each household, The detection results can be compared.

[Third Embodiment]
A single person watching system according to the present embodiment will be described with reference to FIGS.

  First, FIG. 14 is a block diagram showing a configuration of a solitary watching system according to the third embodiment of the present invention. The single person watching system 3 according to the present embodiment includes a single person watching apparatus 300, a home appliance 4, a sensor 5, a network 6, and a single household 8.

  The configuration of the solitary watching device 300 includes a state transition determination unit 101, a time acquisition unit 102, a time zone conversion unit 103, a rule extraction unit 104, a risk and certainty degree processing unit 105, an output unit 106, It consists of a time zone DB 107, a rule DB 108, a history information DB 109, an electrical information conversion unit 110, an electrical information database (hereinafter referred to as an electrical information DB) 111, and a mail transmission unit 112.

  In the present embodiment, the sensor 5 is different from the configurations of the single person watching systems 1 and 2 according to the first embodiment and the second embodiment.

  Moreover, the structure of the single person watching apparatus 300 except the electric information conversion part 110, electric information DB111, the mail transmission part 112, and the output part 106 is the single person watching apparatus 100 which concerns on 1st Embodiment and 2nd Embodiment, and Since the configuration is the same as that of 200, description thereof is omitted here.

  The sensor 5 is a sensor attached to or around the home appliance 4 and uses a sensor that measures electrical information including at least one of current, voltage, and power when the home appliance 4 operates. Configured. This can be achieved using existing ammeters, voltmeters, and wattmeters. The sensor 5 measures at least one electrical information at a constant time interval or a timing at which the value changes, and transmits a signal to the electrical information conversion unit via the network 6.

  The electrical information DB 111 stores a device state in each electrical information in advance corresponding to the type of the home appliance 4.

  The electrical information conversion unit 110 obtains the type of the home appliance 4 based on the electrical information received from the sensor 5 via the network 6. The method of obtaining the type of home appliance 4 is a generally known method of obtaining a feature quantity from the waveform of electrical information, comparing this feature quantity with the feature quantity of a known home appliance 4, and determining the type of home appliance 4. Use the desired method. Further, when the electrical information conversion unit 110 obtains the type of the home appliance 4, the electrical information conversion unit 110 refers to the electrical information DB 111 based on the type and electrical information, obtains the device state, and transmits the obtained device state to the state transition determination unit 101. To do.

  This process may be the process described in the solitary watching apparatus 100 according to the first embodiment or the process described in the solitary watching apparatus 200 according to the second embodiment.

  The output unit 106 displays the degree of risk and the degree of certainty received from the degree-of-risk and certainty degree processing unit 105 in the same manner as the solitary watching devices 100 and 200 according to the first and second embodiments. Further, the output unit 106 transmits the risk level and the certainty level to the mail transmission unit 112.

  The mail transmission unit 112 determines whether or not the inquiry to the monitoring person is appropriate based on the degree of risk and certainty received from the output unit 106, and if the inquiry to the monitoring person is necessary, the mail transmission unit 112 notifies the monitoring person via the output unit 106. Inquiries and e-mail transmission are determined. If the monitor determines that the e-mail is to be transmitted, the e-mail is transmitted, and if not, the process ends. When the inquiry to the monitoring person is unnecessary, an e-mail is transmitted and the process is terminated.

  FIG. 15 is an example of data stored in the electrical information DB 111 in the present embodiment. As shown in FIG. 15, the electrical information DB 111 stores a device state corresponding to the electrical information of the home appliance 4. In the example of FIG. 15, the types of home appliances are examples of a rice cooker, a television, and an electric kettle, but are not limited thereto. Moreover, although electrical information has shown an example as a power value, it is not restricted to this.

  FIG. 16 is a flowchart illustrating an example of the solitary watching process in the present embodiment.

  First, when a change occurs in the operating state of the home appliance 4, the sensor 5 transmits the electrical information of the home appliance 4 as a signal to the electrical information conversion unit 110 via the network 6.

  For example, when the home appliance 4 is a television, when the switch of the television is turned on, the sensor 5 acquires electrical information at this time and transmits the electrical information to the solitary watching device 300.

  The electrical information converter 110 receives a signal from the sensor 5 via the network 6 (S101), and obtains a feature amount of the information based on the received electrical information (S501).

  The obtained feature amount is compared with the feature amount of each home appliance 4 to obtain the type of home appliance 4 (S502).

  For example, when the home appliance 4 is a television, a feature amount is obtained from the received electrical information, and when the feature amount matches the feature amount of the television, the home appliance 4 is obtained as a television.

  Next, based on the received electrical information, the electrical status DB 111 is referred to determine the device status (S503). Then, the obtained device state is transmitted to the state transition determination unit 101.

  For example, if the data stored in the electrical information DB 111 is the data shown in FIG. 15, if the home appliance 4 is a television and the received electrical information has a power value of 15 W, the device status is ON. The ON state is transmitted to the state transition determination unit 101.

  This previous process is the process described in the single person watching apparatus 100 according to the first embodiment or the process described in the single person watching apparatus 200 according to the second embodiment (S504).

  The mail transmission unit 112 determines whether or not to make an inquiry to the supervisor based on the risk and the certainty received from the output unit 106 (S505). When an inquiry is necessary (S505; Yes), The monitoring person is inquired (S506). If no inquiry is required (S505; No), an e-mail is transmitted and the process is terminated. If it is instructed to send an e-mail as a result of the inquiry to the monitor (S507; Yes), the e-mail is sent (S508). If it is determined that transmission of an e-mail is not required (S507: No), the process ends.

  For example, when the risk level is 1 to 3, the mail transmission unit 112 inquires of the supervisor about whether or not to transmit the e-mail, and when the risk level is 4 to 5, the e-mail is unconditionally sent. Is executed.

  The destination of the e-mail may be a predetermined destination or a destination corresponding to the owner of the home appliance 4.

  Since the configuration of the present embodiment is the same as the configurations of the first embodiment and the second embodiment in how to obtain the degree of risk and the certainty factor, the advantage produced by using this embodiment is the first implementation. It is the same as that of a form and 2nd Embodiment.

  In addition, although the danger level and the certainty level are illustrated as the safety information of the single person, other indicators can be used. For example, it is also possible to use safety degree and certainty factor, survival rate and certainty factor, etc. as safety information.

  FIG. 17 is a block diagram illustrating a physical configuration example of the single person watching apparatus according to the embodiment of the present invention illustrated in FIGS. 1, 8, and 14. As shown in FIG. 17, the single person watching apparatus includes a control unit 71, a main storage unit 72, an external storage unit 73, an operation unit 74, a display unit 75, and a transmission / reception unit 76. The main storage unit 72, the external storage unit 73, the operation unit 74, the display unit 75, and the transmission / reception unit 76 are all connected to the control unit 71 via the internal bus 70.

  The control unit 71 includes a CPU (Central Processing Unit) and the like, and in accordance with a control program 79 stored in the external storage unit 73, the state transition determination unit 101, the time acquisition unit 102, and the time zone conversion unit of the solitary watching device 103, the rule extraction unit 104, the risk and certainty degree processing unit 105, the output unit 106, the electrical information conversion unit 110, and the mail transmission unit 112 are executed.

  The main storage unit 72 is configured by a RAM (Random-Access Memory) or the like, loads a control program 79 stored in the external storage unit 73, and is used as a work area of the control unit 71.

  The external storage unit 73 includes a non-volatile memory such as a flash memory, a hard disk, a DVD-RAM (Digital Versatile Disc Random-Access Memory), a DVD-RW (Digital Versatile Disc ReWritable), etc. A control program 79 to be executed is stored in advance, and data stored in the control program 79 is supplied to the control unit 71 in accordance with an instruction from the control unit 71, and the data supplied from the control unit 71 is stored.

  The operation unit 74 includes a pointing device such as a keyboard and mouse, and an interface device that connects the keyboard and pointing device to the internal bus 70.

  The display unit 75 is composed of a CRT (Cathode Ray Tube), an LCD (Liquid Crystal Display), or the like, and displays the result of the risk and certainty of the single person.

  The transmission / reception unit 76 includes a network termination device or a wireless communication device connected to the network 6, and a serial interface or a LAN (Local Area Network) interface connected thereto. The transmission / reception unit 76 is connected to the sensor 5 and the single person watching device via the network 6.

  1, 8, and 14, the state transition determination unit 101, the time acquisition unit 102, the time zone conversion unit 103, the rule extraction unit 104, the risk and confidence level processing unit 105, the output unit 106, The processing of the electrical information conversion unit 110 and the mail transmission unit 112 is performed by the control program 79 using the control unit 71, the main storage unit 72, the external storage unit 73, the operation unit 74, the display unit 75, the transmission / reception unit 76, and the like as resources. Execute by processing.

  In addition, the above-described physical configuration and flowchart are examples, and can be arbitrarily changed and modified.

  A central part that performs control processing including the control unit 71, the main storage unit 72, the external storage unit 73, the operation unit 74, the internal bus 70, and the like is not based on a dedicated system, but using a normal computer system. It is feasible. For example, a computer program for executing the above operation is stored and distributed in a computer-readable storage medium (flexible disk, CD-ROM, DVD-ROM, etc.), and the computer program is installed in the computer. By this, you may comprise the single person watching apparatus which performs the said process. Alternatively, the computer program may be stored in a storage device included in a server device on a communication network such as the Internet, and a single computer system may be configured by downloading or the like from a normal computer system.

  In addition, when the function of the solitary watching device is realized by sharing the OS (operating system) and application programs, or by cooperation between the OS and application programs, only the application program portion is stored in a storage medium or storage device. Also good.

  It is also possible to superimpose a computer program on a carrier wave and distribute it via a communication network. For example, the computer program may be posted on a bulletin board (BBS: Bulletin Board System) on a communication network, and the computer program may be distributed via the network. The computer may be booted and executed in the same manner as other application programs under the control of the OS, so that the above processing can be executed.

  A part or all of the above embodiments can be described as in the following supplementary notes, but is not limited to the following.

(Appendix 1)
Operation status detection means for detecting the operation status of home appliances operated by a single person;
Rule storage means for storing a rule for associating the operation status detected by the operation status detection means with the safety information of a single person for each preset time zone;
A time zone specifying means for specifying the time zone to which the current time belongs,
Safety information acquisition means for obtaining safety information of a single person according to the rules stored in the rule storage means based on the time zone specified by the time zone specification means and the operation situation detected by the operation situation detection means;
Output means for outputting the safety information acquired by the safety information acquisition means;
Comprising
A single person watching system characterized by this.

(Appendix 2)
The operation status detection unit includes a counting unit that counts the number of operations of the home appliance for each preset time period,
The rule storage means stores a rule associating the number of operations of the home electric appliance and the safety information of a single person in the time zone and each time zone,
The safety information acquisition unit stores, in the rule storage unit, a time zone that is a predetermined number before the current time zone specified by the time zone specifying unit and the number of operations counted by the counting unit in the time zone. By seeking safety information for singles by adapting to the rules
The single person watching system according to supplementary note 1, characterized by:

(Appendix 3)
When the operation detection unit detects an operation of the home appliance, the operation state detection unit updates the operation count of the home appliance in the time zone at the time of detection,
The safety information acquisition means adapts the number of operations in the time zone immediately before the time zone to which the current time belongs to the rules stored in the rule storage means, and obtains safety information.
The single person watching system according to supplementary note 1 or 2, characterized by:

(Appendix 4)
A history storage means for storing a history of the number of operations for each time period, counted by the operation status detection means,
The rule stores the condition obtained from the history for each time zone in association with the safety information when the condition is satisfied,
The safety information acquisition means satisfies a condition set in the rule based on a count value in a predetermined time zone obtained by the operation status detection means and a history recorded in the history recording means. To determine whether or not to obtain the safety information according to the rules that are satisfied,
The single person watching system according to supplementary note 1 or 2, characterized by:

(Appendix 5)
The rule stores, in association with the safety information, the ratio of the past average number of operations in the time zone obtained from the history and the count value in the latest same time zone, for each time zone,
The safety information acquisition means acquires safety information based on a ratio between a past average number of operations obtained by the operation status detection means and a count value in the latest same time zone,
The single person watching system according to supplementary note 1 or 2, characterized by:

(Appendix 6)
The safety information includes a safety risk of the single person and a certainty of the risk,
The rule includes information for associating the operation status, the degree of danger, and the certainty factor for each time zone,
The single person watching system according to any one of appendices 1 to 5, characterized in that:

(Appendix 7)
The operation status detection means includes a no-operation duration detection means for detecting a no-operation duration of a home appliance operated by a single person,
The rule stores a time zone and an added value for the time zone,
In accordance with the duration measured by the no-operation duration detecting means, an accumulating means is provided for accumulating an addition value corresponding to a time zone from the rule,
The safety information acquisition means obtains safety information based on an accumulated value by the accumulation means.
The single person watching system according to supplementary note 1, characterized by:

(Appendix 8)
The safety information includes a safety risk of the single person and a certainty of the risk,
The home appliances are classified into a plurality of categories, and the risk level is set for each category,
The safety information acquisition means acquires the degree of risk assigned to the classification to which the home appliance belongs, and the certainty corresponding to the accumulated value obtained based on the rule,
The single person watching system according to supplementary note 1 or 7, characterized by:

(Appendix 9)
The operation status detection means includes means for obtaining power consumption of the home appliance, and means for detecting an operation on the home appliance based on a change in power consumption.
The single person watching system according to any one of appendices 1 to 8, characterized in that:

(Appendix 10)
The time zones are classified into five life time zones: morning, noon, evening, night, and bedtime.
The single person watching system according to any one of appendices 1 to 9, characterized in that:

(Appendix 11)
Determining whether to send an e-mail based on the safety information, and if necessary, a mail sending means for sending an e-mail,
The single person watching system according to any one of appendices 1 to 10, characterized in that:

(Appendix 12)
On the computer,
An operation status detection step for detecting an operation status of the home appliance operated by a single person;
A rule storage step for storing a rule for associating the operation status detected by the operation status detection step with the safety information of a single person for each preset time zone,
A time zone specifying step for specifying a time zone to which the current time belongs,
Based on the time zone specified by the time zone specification step and the operation situation detected by the operation situation detection step, a safety information acquisition step for obtaining safety information of a single person according to the rules stored in the rule storage step;
Outputting the safety information acquired by the safety information acquisition step;
A solitary watching program characterized by that.

(Appendix 13)
A single person monitoring method executed by a single person monitoring system that detects an abnormality of a single person,
An operation status detection step for detecting an operation status of the home appliance operated by a single person;
A rule storage step for storing a rule for associating the operation status detected by the operation status detection step with the safety information of a single person for each preset time zone,
A time zone specifying step for specifying a time zone to which the current time belongs,
Based on the time zone specified by the time zone specification step and the operation situation detected by the operation situation detection step, a safety information acquisition step for obtaining safety information of a single person according to the rules stored in the rule storage step;
An output step of outputting the safety information acquired by the safety information acquisition step,
A method for watching a single person characterized by the above.

1, 2, 3 Single person watching system 100, 200, 300 Single person watching device 101 State transition determination unit 102 Time acquisition unit 103 Time zone conversion unit 104 Rule extraction unit 105 Risk and confidence level processing unit 106 Output unit 107 Time zone Database 108 Rule database 109 History information database 110 Electrical information conversion unit 111 Electrical information database 112 Mail transmission unit 4 Home appliance 5 Sensor 6 Network 70 Internal bus 71 Control unit 72 Main storage unit 73 External storage unit 74 Operation unit 75 Display unit 76 Transmission / reception Part 8 Single-person household

Claims (5)

Operation status detection means for detecting the duration of no operation of home appliances operated by a single person,
Rule storage means for storing a rule that associates the duration of no operation with the added value for the time period for each normalized time period set in advance;
A time zone specifying means for specifying a time zone to which the current time belongs from among the time zones embodied according to the standards determined for each single person;
Accumulating means for obtaining and accumulating an addition value corresponding to the time zone specified by the time zone specifying means according to the duration detected by the operation status detecting means;
Safety information obtaining means for obtaining safety information of a single person based on the accumulated value by the accumulation means,
Output means for outputting the safety information acquired by the safety information acquisition means;
Comprising
A single person watching system characterized by this. The safety information includes a safety risk of the single person and a certainty of the risk,
The home appliances are classified into a plurality of categories, and the risk level is set for each category,
The safety information acquisition means acquires the degree of risk assigned to the classification to which the home appliance belongs, and the certainty corresponding to the accumulated value obtained based on the rule,
The single person watching system according to claim 1. A mail sending means for sending an e-mail to a predetermined destination,
The mail sending means
Obtain the safety information output by the output means,
When the degree of risk included in the acquired safety information is a value in the first range set in advance, inquiry about e-mail transmission suitability is made, and as a result of the inquiry, an instruction to send an e-mail is acquired Send an email, if you get an instruction that email is not required, do not send an email,
When the risk included in the acquired safety information is a value of the second range of the risk higher than the first range, an e-mail is transmitted without inquiring whether e-mail is suitable for transmission,
The single person watching system according to claim 2. On the computer,
An operation status detection step for detecting a duration of no operation of the home appliance operated by a single person,
A rule storage step for storing a rule that associates the duration of no operation with the added value for the time zone for each preset normalized time zone;
A time zone specifying step for specifying a time zone to which the current time belongs from among the time zones embodied according to the criteria set for each single person;
According to the duration detected in the operation status detection step, an accumulation step for accumulating the addition value corresponding to the time zone specified in the time zone specification step from the rule;
Safety information acquisition step for obtaining safety information of a single person based on the accumulated value by the accumulation step;
Outputting the safety information acquired by the safety information acquisition step;
A solitary watching program characterized by that. A single person monitoring method executed by a single person monitoring system that detects an abnormality of a single person,
An operation status detection step for detecting a duration of no operation of the home appliance operated by a single person,
A rule storage step for storing a rule that associates the duration of no operation with the added value for the time zone for each preset normalized time zone;
A time zone specifying step for specifying a time zone to which the current time belongs from among the time zones embodied according to the criteria set for each single person;
According to the duration detected in the operation status detection step, an accumulation step for accumulating the addition value corresponding to the time zone specified in the time zone specification step from the rule;
Safety information acquisition step for obtaining safety information of a single person based on the accumulated value by the accumulation step;
An output step of outputting the safety information acquired by the safety information acquisition step,
A method for watching a single person characterized by the above.

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