JP2015089163A - Behavior evaluation device, behavior evaluation system, behavior evaluation method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the use of information adapted to life of an individual resident in a dwelling house, in evaluating whether or not behavior of the resident is normal.SOLUTION: A behavior evaluation device 10 comprises an acquisition unit 11, a first storage unit 121, a first calculation unit 131, a determination unit 133, and a communication unit 16. The acquisition unit 11 acquires a consumption amount of a resource by an apparatus 30 selected from a plurality of apparatuses 30 used in a dwelling house, from a measurement device 20. The first storage unit 121 stores, as standard data, a time sequence of measurement data of normal time in a predetermined determination period by using, as the measurement data, a value obtained by integrating, for each unit time, the consumption amount acquired by the acquisition unit 11. The first calculation unit 131 calculates, as an evaluation value, distance between the standard data and time sequence of the measurement data in the determination period acquired by the acquisition unit 11. The determination unit 133 determines whether or not behavior of a resident in a dwelling house is normal by using a result of comparing the evaluation value 11 with a reference value, and notifies a notification device 60 through the communication unit 16.

Description

  The present invention relates to a behavior evaluation apparatus that evaluates whether or not the behavior of a resident in a house is normal, a behavior evaluation system that uses the behavior evaluation apparatus, a behavior evaluation method in the behavior evaluation apparatus, and a program that causes a computer to function as a behavior evaluation apparatus About.

  Conventionally, a technique has been proposed in which the amount of power per reference time determined based on the operation of a device is measured, and whether or not there is an abnormality based on the transition of the measured amount of power (for example, Patent Document 1). reference). Patent Document 1 detects that a device has been operated by measuring a current on the power supply side with respect to a branch point of wiring. This type of technology makes it possible to monitor the behavior of single-dwellers in their homes.

JP-A-2005-102428

  Patent Document 1 describes that since the current on the power supply side is measured from the branch point of the wiring, there is an advantage of reducing the psychological pressure of the resident. However, in Patent Document 1, it is recommended that, for example, a device used in a house includes a device whose power consumption varies by a factor of 500 or more. It is thought that it does not correspond to the use of.

  It is an object of the present invention to provide an action evaluation apparatus that makes it possible to use information suitable for the lives of individual residents when evaluating whether or not the actions of residents in a house are normal. It is another object of the present invention to provide a behavior evaluation system using the behavior evaluation device, a behavior evaluation method in the behavior evaluation device, and a program that causes a computer to function as the behavior evaluation device.

  The behavior evaluation device according to the present invention includes an acquisition unit that acquires a consumption amount of a resource by a device selected from a plurality of devices used in a house from a measurement device, and a unit period of the consumption amount acquired by the acquisition unit. A first storage unit that stores, as standard data, a time series of the measurement data during normal times in a predetermined determination period, and the determination period acquired by the standard data and the acquisition unit. Judgment to determine whether or not the behavior of the dweller of the house is normal by using a first calculation unit that calculates the distance from the time series of the measurement data as an evaluation value and a result of comparing the evaluation value with a reference value And a communication unit for notifying the notification device of the determination result of the determination unit.

  In this behavior evaluation apparatus, a second storage unit that stores the measurement data over a plurality of determination periods, and the measurement data in a plurality of determination periods in normal times stored in the second storage unit are used. It is preferable to further include a second arithmetic unit that generates the standard data.

  In this behavior evaluation apparatus, the device is a set of electrical devices that receive power from a branch circuit branched into a plurality of systems by a distribution board, and the consumption is an amount of power measured for each branch circuit, The acquisition unit outputs the measurement data for each selected device, the first storage unit stores the standard data for each selected device, and the first calculation unit It is preferable to calculate, as an evaluation value, a value obtained by adding the distances obtained for each branch circuit for the selected branch circuit.

  In this behavior evaluation apparatus, the device includes, in addition to a set of electrical devices that receive power from branch circuits branched into a plurality of systems by a distribution board, other devices that consume resources other than power, and the set of electrical devices The consumption by is the amount of power measured for each branch circuit, the acquisition unit outputs the measurement data for each selected device, and the first storage unit is the selected device The standard data for each is stored, and the first calculation unit is a first evaluation value obtained by summing the distances obtained for each branch circuit, and the distances obtained for each device with respect to the other devices. The second evaluation value is calculated, and the determination unit integrates the results of comparing the first evaluation value and the second evaluation value calculated by the first calculation unit with the reference value, respectively. By the residents of the house It is preferable that the dynamic to determine whether normal or not.

  In this behavior evaluation apparatus, it is preferable that the acquisition unit further includes a selection unit that selects a device that acquires the consumption amount from the measurement device.

  In this behavior evaluation apparatus, the standard data is classified for each attribute of the determination period, and the first calculation unit determines the standard data according to the attribute of the determination period related to the time series of the measurement data. It is preferable to select.

  In this behavioral evaluation device, the determination unit has a predetermined result obtained by comparing a result of comparing the total consumption of resources for each device in the determination period with a normal range and a result of comparing the evaluation value with the reference value. It is preferable to determine whether or not the behavior of the resident of the house is normal by combining according to a rule.

  The behavior evaluation system according to the present invention includes any one of the behavior evaluation devices described above and the notification device.

  In the behavior evaluation method according to the present invention, an acquisition unit acquires resource consumption by a device selected from a plurality of devices used in a house from a measuring device, and the unit of consumption consumed by the acquisition unit Using the measurement data which is the integrated value of the first storage unit as a standard data of the time series of the measurement data during normal times in a predetermined determination period, and in the determination period acquired by the standard data and the acquisition unit The first calculation unit calculates the distance from the time series of the measurement data as an evaluation value, and the determination unit determines whether or not the behavior of the resident of the house is normal by comparing the evaluation value with a reference value, The communication unit notifies the notification device of the determination result of the determination unit.

  A program according to the present invention causes a computer to function as any one of the behavior evaluation devices described above.

  The present invention generates a time series of measurement data for each unit period in a predetermined determination period using the consumption of resources in a device selected from a plurality of devices used in a house. Standard data is generated from the series. Therefore, the behavior of residents in each house is reflected in the standard data. In other words, according to the configuration of the present invention, there is an advantage that it is possible to use information suitable for the life of each resident when evaluating whether or not the behavior of the resident in the house is normal. In addition, since standard data uses a time series of measurement data during normal times, there is an advantage that it does not take time to set standard data.

It is a block diagram which shows embodiment. It is a figure which shows the example of transition of the electric power for every branch circuit in embodiment. It is a figure which shows the example of the rule which a judgment part uses in embodiment.

  As illustrated in FIG. 1, the behavior evaluation apparatus 10 described below includes an acquisition unit 11, a first storage unit 121, a first calculation unit 131, a determination unit 133, and a communication unit 16. The acquisition unit 11 acquires the amount of resource consumption by the device 30 selected from the plurality of devices 30 used in the house from the measurement device 20. The 1st memory | storage part 121 preserve | saves the time series of the measurement data of the normal time in a predetermined | prescribed determination period as standard data using the measurement data which is the integrated value for every unit period of the said consumption which the acquisition part 11 acquired. The first calculation unit 131 calculates the distance between the standard data and the time series of measurement data in the determination period acquired by the acquisition unit 11 as an evaluation value. The determination unit 133 determines whether or not the behavior of the resident of the house is normal using the result of comparing the evaluation value with the reference value. The communication unit 16 notifies the notification device 60 of the determination result of the determination unit 133.

  The behavior evaluation apparatus 10 includes the second storage unit 122 that stores the measurement data over a plurality of determination periods, and the measurement data in a plurality of determination periods that are stored in the second storage unit 122 during normal times. And a second calculation unit 132 that generates the standard data by using the second calculation unit 132.

  The device 30 is a set of electrical devices 31 that receive power from the branch circuit branched into a plurality of systems by the distribution board 40, and the consumption is preferably the amount of power measured for each branch circuit. In this case, the acquisition unit 11 outputs the measurement data for each selected device 30, and the first storage unit 121 stores the standard data for each selected device 30. In addition, the first calculation unit 121 calculates, as an evaluation value, a value obtained by summing the distances obtained for each of the branch circuits for the selected branch circuit.

  In addition to the set of electrical devices 31 that receive power from branch circuits that are branched into a plurality of systems by the distribution board 40, the device 30 includes other devices that consume resources other than electric power (a gas device 32, a device 33 that consumes tap water). ) May be included. In this case, the consumption by the set of electrical devices 31 is the amount of power measured for each branch circuit. The acquisition unit 11 outputs the measurement data for each selected device 30, and the first storage unit 121 stores the standard data for each selected device 30. Further, the first calculation unit 131 calculates a first evaluation value obtained by summing the distances obtained for each of the branch circuits, and a second evaluation value that is the distance obtained for each device 30 with respect to other devices. To do. The determination unit 133 integrates the results of comparing the first evaluation value and the second evaluation value calculated by the first calculation unit 131 with the reference value, so that the behavior of the resident of the house can be determined. Determine whether it is normal.

  The behavior evaluation apparatus 10 may include a selection unit 134 that selects the device 30 from which the acquisition unit 11 acquires consumption from the measurement device 16.

  It is desirable that the standard data is classified for each attribute of the determination period, and the first calculation unit 131 selects the standard data according to the attribute of the determination period regarding the time series of the measurement data.

  The determination unit 133 combines the result of comparing the total consumption of resources for each device 30 in the determination period with a normal range and the result of comparing the evaluation value with the reference value according to a predetermined rule. It is preferable to determine whether or not the behavior of the resident of the house is normal.

  The behavior evaluation system described below includes a behavior evaluation device 10 and a notification device 60.

  By the way, the behavior evaluation method described below evaluates whether or not the behavior of the dweller of the house is normal using the resource consumption by the device 30 by using the following procedure. That is, the acquisition unit 11 acquires the resource consumption by the device 30 selected from the plurality of devices 30 used in the house from the measuring device 20. The first storage unit 121 stores the time series of the measurement data during normal times in a predetermined determination period as standard data using measurement data that is an integrated value of the consumption amount acquired by the acquisition unit 11 for each unit period. To do. Thereafter, the first computing unit 131 calculates the distance between the standard data and the time series of the measurement data in the determination period acquired by the acquiring unit 11 as an evaluation value. Further, by comparing the evaluation value with a reference value, the determination unit 133 determines whether or not the behavior of the resident of the house is normal, and the communication unit 16 notifies the notification device 60 of the determination result of the determination unit 133. .

  Hereinafter, the configuration of the present embodiment will be described in more detail. In the embodiment described below, the behavior of a resident (resident) in a house is determined based on the consumption of resources consumed by the device. The judgment result of the behavior is classified into two stages of normal and abnormal, and three stages of normal, abnormal and abnormal signs. In the following description, the behavior of a resident in a house will be described on the assumption that the behavior is divided into three stages: normal, abnormal, and abnormal signs.

  The equipment provided in the house is selected from electrical equipment that consumes power, gas equipment that consumes gas, equipment that consumes tap water (faucets, water heaters, baths, toilets, and the like). That is, in this embodiment, the resource consumed by the device means any one of electric power, gas (city gas, LPG), and water (tap water). However, the resource may contain steam or the like. In short, any resource can be used as long as it can measure (measure) the amount used.

  Here, the apparatus which consumes gas equipment and tap water does not measure every kind of equipment at present. Therefore, in the following, a case where the device is an electrical device will be mainly described, and an example in which gas consumption and water consumption are collectively measured in units of houses will be described. Of course, even if it is a device that consumes gas or water, if it can be classified into multiple groups in a house, it is possible to use the resource consumption measured for each group as in the case of electrical devices. is there. In principle, the amount of electric power consumed by an electric device is measured for each branch circuit branched into a plurality of systems by a distribution board. However, the amount of electric power consumed may be measurable for each electric device.

  As shown in FIG. 1, the distribution board 40 includes a main breaker 41 and a plurality of branch breakers 42 as is well known. In addition, the distribution board 40 includes a power sensor 21 as a measuring device that measures the power passing through each branch breaker 42. A power meter 51 is provided on the primary side (system side) of the distribution board 40, and the electrical device 31 is connected to the secondary side (load side) of the branch breaker 42.

  The power sensor 21 includes a current sensor that measures a passing current for each branch breaker 42, and uses the current measured by the current sensor and the voltage between the terminals of the branch breaker 42 to pass through each branch breaker 42. Is calculated. The current sensor is selected from a Rogowski coil, a current transformer, a magnetic sensor, and the like. Moreover, the power sensor 21 has a communication function (not shown), and transmits the power consumption measured for each branch breaker 42 to the behavior evaluation apparatus 10 using the communication function. Communication between the power sensor 21 and the behavior evaluation apparatus 10 can be performed by wireless as well as wired communication. In this configuration, the power consumption by the electrical device 31 is measured for each branch circuit branched by the branch breaker 42.

  In the present embodiment, the gas consumption is measured by the first flow sensor 22 provided separately from the gas meter 52, and the water consumption is measured by the second flow sensor 23 provided separately from the water meter 53. Measure. Therefore, the gas device 32 is connected to the flow path on the downstream side of the first flow rate sensor 22, and the device 33 that consumes tap water is connected to the flow path on the downstream side of the second flow rate sensor 23. It is desirable that the first flow sensor 22 and the second flow sensor 23 have a communication function like the power sensor 21. The first flow rate sensor 22 and the second flow rate sensor 23 communicate with the behavior evaluation device 10 through a wired or wireless communication path, respectively.

  Hereinafter, when the power sensor 21, the first flow sensor 22, and the second flow sensor 23 are not particularly distinguished, they are referred to as the measuring device 20. Moreover, when not distinguishing especially the electric equipment 31, the gas equipment 32, and the equipment 33 which uses water, it describes as the equipment 30.

  The measurement device 20 is known to have a configuration for outputting a digital value and a configuration for outputting an analog value. In the following, it is assumed that the measured resource consumption is transmitted to the behavior evaluation device 10 as a digital value. Do it. It is also possible to adopt a configuration in which the consumption amount of resources is output as an analog value from the measurement device 20 and converted into a digital value in the behavior evaluation device 10.

  The behavior evaluation device 10 includes an acquisition unit 11 that acquires the usage amount of resources from the measurement device 20. The acquisition unit 11 also serves as an interface unit for connecting the measurement device 20. As described above, since the measurement device 20 outputs the measured consumption of resources as a digital value, the behavior evaluation device 10 may handle a digital signal. Therefore, the behavior evaluation apparatus 10 is realized by using, as main hardware elements, a device including a processor that operates according to a program and an interface device that is added as necessary. As the processor, a microcomputer (microcontroller) having a memory integrally and a general CPU having a memory separately are used. In addition, when the measuring device 20 outputs the consumption of resources as an analog value, the acquisition unit 11 may have a function of performing analog-digital conversion.

  The program is previously written in a nonvolatile memory. It is desirable that the memory in which the program is written is rewritable. In this case, the program is provided to the memory through an electric communication line such as the Internet, or the program is provided by a computer-readable recording medium. Therefore, it is possible to easily update the program. This program causes a computer to function as the behavior evaluation apparatus 10.

  This embodiment uses measurement data obtained by integrating resource consumption for each unit period, and uses a time series of measurement data in a predetermined determination period to determine whether or not the behavior of a resident in a house is normal. Yes. Specifically, the time series of measurement data in the judgment period during normal times is taken as standard data, and the behavior of residents is judged by evaluating the difference between the time series of measurement data and standard data in the same judgment period obtained every day. Is done.

  The unit period is selected from 1 minute, 5 minutes, 10 minutes, 15 minutes, 20 minutes, 30 minutes, 1 hour, and the like. The unit period is desirably selected from 15 minutes, 20 minutes, and 30 minutes. In this embodiment, the unit period is 30 minutes. The determination period may be, for example, 1 day, 1 week, etc., but may be 6 hours, 12 hours, or the like. In this embodiment, the determination period is one day. Therefore, 48 pieces of measurement data obtained for each unit period (30 minutes) are obtained for the determination period (one day). In other words, it is determined whether or not the behavior of the resident is normal using a time series of 48 pieces of measurement data.

  The start time of the unit period may be 0 minutes per hour and 30 minutes per hour. Depending on the lifestyle of the resident, the start time of the determination period is not necessarily 0 o'clock, but if it is set to 0 o'clock, it can be handled in most cases. The length of the unit period and the determination period, and the start time may be fixedly set, but it is desirable that the behavior evaluation apparatus 10 can adjust the unit period and the determination period.

  As described above, the resource usage acquired from the measurement device 20 is integrated for each unit period and handled as measurement data. Integration of the resource usage is performed by either the measurement device 20 or the behavior evaluation device 10. When integration is performed in the measurement device 20, it is only necessary to transmit measurement data from the measurement device 20 to the behavior evaluation device 10 every 30 minutes, and communication traffic between the measurement device 20 and the behavior evaluation device 10 can be reduced. become.

  On the other hand, if the behavior evaluation apparatus 10 integrates the consumption, the measuring apparatus 20 can output the resource consumption in units of time selected from, for example, 30 seconds, 1 minute, and 5 minutes. become. When the resource consumption is obtained in a relatively short time unit, convenience is obtained when used for the purpose of controlling the device 30, and the hardware resources constituting the measuring device 20 are reduced. 20 processing load is reduced.

  In the present embodiment, the acquisition unit 11 obtains an integrated value for each unit period of the resource amount acquired from the measurement device 20. The acquisition unit 11 outputs this integrated value as measurement data. The behavior evaluation device 10 uses the time series of the measurement data in the normal time determination period as standard data, and evaluates the difference between the time series of the newly acquired measurement data and the standard data, thereby determining whether there is an abnormality in the behavior of the resident. to decide. Here, normal time means a period in which the resident's behavior is normal, and the time series of measurement data in the determination period means time-order measurement data in the determination period.

  The behavior evaluation apparatus 10 includes a storage unit 12 for storing standard data and storing measurement data for comparison with the standard data. Moreover, the behavior evaluation apparatus 10 includes a calculation unit 13 that performs a calculation for evaluating a difference between the measurement data newly acquired by the acquisition unit 11 and the standard data. The storage unit 12 includes a first storage unit 121 that stores standard data, and a second storage unit 122 that stores a time series of measurement data acquired by the acquisition unit 11 over a plurality of determination periods. The computing unit 13 is a first computing unit that obtains an evaluation value related to a difference between the time series of the latest measurement data stored in the second storage unit 122 and the standard data stored in the first storage unit 121. 131. Furthermore, the calculating part 13 is provided with the 2nd calculating part 132 which produces | generates standard data using the time series of the measurement data in the several determination period stored in the 2nd memory | storage part 122 in normal time.

  Since the standard data may change depending on the determination period, it is desirable that the first storage unit 121 stores a plurality of types of standard data classified for each attribute of the determination period. The attributes of the determination period include, for example, distinctions such as weekdays and holidays, and distinctions such as summer (cooling period), winter (heating period), and intermediate period. Further, the attribute of the determination period may be information related to use of the lighting device such as sunrise time and sunset time.

  The standard data used by the first calculation unit 131 is selected according to the date and time that the clock unit 14 built in the behavior evaluation apparatus 10 keeps timing. The clock unit 14 measures the date and time, gives information for distinguishing weekdays and holidays to the first computation unit 131, and gives information for distinguishing summer, winter, and intermediate periods to the first computation unit 131. . By using the date and time counted by the clock unit 14 and the area where the behavior evaluation device 10 is used, it is possible to obtain a rough estimate of the sunrise time and sunset time, so this information is given to the first calculation unit 131. Standard data may be selected.

  In order to distinguish between the cooling period and the heating period, a temperature sensor (not shown) for measuring the room temperature may be provided. In this case, the first calculation unit 131 selects standard data to be used using the room temperature measured by the temperature sensor. Further, since the behavior may change depending on whether the weather is fine or rainy, the first calculation unit 131 may select standard data to be used by using the output of the fine rain sensor that determines the weather.

  The second calculation unit 132 generates standard data using a time series of measurement data stored in the second storage unit 122 during normal times. An attribute obtained from the clock unit 14 or the like is associated with a time series of measurement data for each determination period stored in the second storage unit 122. The 2nd calculating part 132 produces | generates standard data using the time series of the measurement data in several determination periods (namely, several days) about one attribute. That is, the 2nd calculating part 132 calculates | requires the representative value of the measurement data for every unit period about the said attribute, and uses the time series of the representative value of measurement data as standard data. For example, an average value is used as the representative value of the measurement data for each unit period.

  When the standard data to be used is determined, the first arithmetic unit 131 evaluates the difference between the time series of the latest measurement data stored in the second storage unit 122 and the standard data. As the evaluation value of the difference, the sum in the determination period of the difference between the measurement data (representative value) for each unit period in the standard data and the measurement data for each unit period stored in the second storage unit 122 is used. That is, if the data for each unit period i included in the standard data is represented by Sek (i) and the measurement data for each unit period i is represented by Dek (i), the evaluation value E1 is obtained as shown in Equation 1. . Here, the subscript k is an identifier for distinguishing the attributes of the branch circuit and the standard data, i represents the order of the unit periods in the determination period, and is an integer value of 1 to 48.

  The evaluation value E1 obtained as shown in Equation 1 corresponds to the distance (Manhattan distance) between the time series of measurement data obtained during the determination period and the standard data. This embodiment is based on the knowledge that if the above-described attributes are the same, there will be no significant difference in the daily behavior of the resident in the house. From this, if the evaluation value E1 is compared with an appropriate reference value, the usage state of the electrical device 31 during the determination period is within a normal usage state range or abnormal use depending on the magnitude of the evaluation value E1 with respect to the reference value. It is possible to determine whether it is a state or a use state in which signs of abnormality are seen.

  In the present embodiment, since the evaluation value E1 is classified into three levels, two levels of reference values θe1 and θe2 are set (θe1 <θe2). As is clear from the definition formula of Equation 1, the evaluation value E1 increases as the difference between the time series of the measurement data and the standard data increases. Therefore, “normal if E1 <θe1”, “θe1 ≦ E1 <θe2”. If so, the reference values θe1 and θe2 may be set so that it can be determined as “sign of abnormality” and “abnormal if θe2 ≦ E1”. The comparison between the reference values θe1 and θe2 and the evaluation value E1 is performed by a determination unit 133 provided in the calculation unit 13.

  The result determined by the determination unit 133 is transmitted to the notification device 60 through the communication unit 16. The notification device 60 receives the determination result of the behavior evaluation device 10 through a telecommunication line 61 such as a mobile telephone network or the Internet. The notification device 60 is selected from a personal computer, a mobile phone (including a smartphone), a tablet terminal, a dedicated device, and the like. In the current technology, it is desirable to operate the application program on a device that is carried on a daily basis, such as a smartphone, so as to function as the notification device 60.

  Communication from the communication unit 16 of the behavior evaluation device 10 to the notification device 60 is desirably performed in a push type. When the telecommunication line 61 is a mobile telephone network, the behavior evaluation device 10 may directly notify the notification device 60. When the telecommunication line 61 is the Internet, the behavior evaluation apparatus 10 preferably notifies the server 62 (preferably cloud) of the determination result, and notifies the notification apparatus 60 of the determination result. In the example illustrated in FIG. 1, the behavior evaluation device 10 indicates a configuration example in which the determination result is notified to the notification device 60 through the server 62.

  The behavior evaluation apparatus 10 includes a display device 17 having a flat display such as a liquid crystal display device, and an operation device 18 having a touch panel or a push button switch. The display 17 displays various information such as data input to the acquisition unit 11, measurement data output from the acquisition unit 11, standard data stored in the first storage unit 121, and determination results by the determination unit 133. It is possible. The operation device 18 is used for selecting the type of information to be displayed on the display device 17, selecting the electric device 31 for obtaining the evaluation value E1, and the like.

  In the configuration example described above, the type of the electrical device 31 was not particularly described, but actually, a branch circuit having a large correlation between the resident behavior and the time series of the measurement data, and the time series of the resident behavior and the measurement data. There is a branch circuit with a small correlation with.

  FIG. 2 shows the transition of power for each branch circuit output from the power sensor 21. FIG. 2A shows the transition of power on weekdays in August, and FIG. 2B shows the transition of power on holidays in August. Characteristic A1 includes kitchen, washroom and bathroom, Characteristic A2 corresponds to the outlet in the living room, Characteristic A3 corresponds to the refrigerator, Characteristic A4 corresponds to the air conditioner in the living room, A5 corresponds to the outlet in the corridor, A6 corresponds to the outlet in the Western room, and A7 corresponds to the washing machine. It represents the transition of power to be used.

  Comparing FIG. 2 (a) and FIG. 2 (b), in the characteristics A1, A2, A3, and A4, the power changes relatively with time. That is, it is considered that the change in electric power reflects behavior associated with the resident's life, such as washing, eating, bathing, watching TV, and sleeping. However, the position of the morning peak is different for the characteristics A1, A2, and A3 on weekdays and holidays. This is probably because the wake-up time differs between weekdays and holidays.

  As can be seen from FIG. 2, it is desirable to select a branch circuit having a large correlation between the resident's behavior and the change in power in order to evaluate the resident's behavior. Therefore, the calculating part 13 is provided with the selection part 134 which selects the branch circuit used for a resident's action evaluation. The first calculation unit 131 obtains an evaluation value E1 regarding the difference between the time series of the measurement data and the standard data for the branch circuit selected by the selection unit 134.

  Here, the evaluation value E1 is obtained for each branch circuit. However, when the selection unit 134 selects a plurality of branch circuits, the evaluation value E1 is also plural, and it takes time to evaluate. Therefore, in this embodiment, the total sum of the evaluation values E1 obtained for each branch circuit is used as the evaluation value E2, and this evaluation value E2 can be handled in the same manner as the evaluation value E1 obtained for one branch circuit. That is, the first calculation unit 131 calculates the evaluation value E2 by performing the calculation of Equation 2, and compares the reference value and the evaluation value E2 in the same manner as the evaluation value E1 calculated as shown in Equation 1. To assess whether the resident's behavior is normal.

  In Equation 2, the range of the coefficient αk is a binary value of “0” and “1”, and “1” is selected for the branch circuit or standard data attribute used to obtain the evaluation value E1. If it is not necessary for obtaining the evaluation value E1, “0” is selected. In other words, n in Equation 2 can be said to be the number of options of standard data. In the calculation of Equation 2, for the branch circuit selected by the selection unit 134, the evaluation value E1 obtained in the calculation of Equation 1 for each branch circuit is totaled for all the selected branch circuits. Then, the summed evaluation value E <b> 2 is used for determination of the resident's behavior in the determination unit 133.

  As can be seen from the above description, the selection unit 134 not only selects a branch circuit, but also selects attributes of time series of measurement data and standard data. That is, the selection unit 134 selects the evaluation value E1 used to obtain the evaluation value E2 of Equation 2.

  For selecting a branch circuit, the selection unit 134 can interactively perform the selection using the display unit 17 and the operation unit 18. For example, the transition of electric power during the determination period as shown in FIG. 2 is displayed on the display device 17 and the user operates the operation device 18 to allow the user to interactively select the branch circuit. Is possible. The selection unit 134 is configured to automatically select a branch circuit that is estimated to have a large correlation with the behavior of the resident based on the fluctuation range (range) in the determination period, the number of peaks, and the like. Also good.

  In the above-described configuration example, since the two-stage reference values θe1 and θe2 are used, not only is the resident's behavior normal or abnormal, but an intermediate state between normal and abnormal is estimated as a sign of abnormality. It is possible. When the determination unit 133 estimates that there is a sign of abnormality, the user who has received the determination result through the notification device 60 is alerted, so that it is possible to take measures such as confirming the state of the resident of the house.

  In addition, when the determination unit 133 obtains a determination result that there is an abnormality sign, the determination unit 133 does not notify the determination result to the notification device 60 in only one determination period, and does not notify the abnormality in the predetermined plurality of determination periods. The notification device 60 may be notified when a determination result is obtained. For example, when a determination result that is an abnormality sign is obtained for three consecutive days, or when a determination result that is an abnormality sign is obtained for three days in five days, the determination unit 133 includes the communication unit 16. The notification device 60 may be notified of an abnormality sign.

  Further, as in the above-described example, the determination may be made by using only one reference value θe instead of the two-step reference values θe1 and θe2 to classify the state as normal or abnormal. For example, when the evaluation value E2 obtained by applying Equation 2 is used, the determination unit 133 has two types of determination results such as “normal if E2 <θe” and “abnormal if θe ≦ E2”. May be configured to output.

  In the configuration example described above, the case where the device 30 is the electrical device 31 has been described, but the device 30 may be a gas device 32 or a device 33 using tap water. The evaluation value G related to the gas device 32 and the evaluation value H related to the device 33 using tap water are obtained in the form of Equation 3. That is, since the gas is measured by the first flow rate sensor 22 and the water is measured by the second flow rate sensor 23, it is not necessary to distinguish the branch circuit as in the electric device 31. Therefore, although the identifier is omitted in Equation 3, the attribute may be added depending on the date and time and season even for the consumption of gas and water, so that the identifier may be added as in Equation 1.

  In Equation 3, Sg (i) is data for each unit period i included in the standard data for gas, and Sh (i) is data for each unit period i included in the standard data for tap water. Dg (i) is measurement data for each unit period i related to gas, and Dh (i) is measurement data for each unit period i related to tap water.

  When the first calculation unit 131 obtains evaluation values E2 (or E1), G, and H for three types of resources of electric power, gas, and tap water, respectively, the determination unit 133 includes three types of evaluation values E2 (or E1), G, and H are combined to determine the resident's behavior. In the following, E2 is used as the evaluation value regarding power. When the three types of evaluation values E2, G, and H are all in the normal range, the determination unit 133 determines that the resident's behavior is normal. In addition, when any one of the three types of evaluation values E2, G, and H is in an abnormal range, the determination unit 133 determines that the resident's behavior is abnormal.

  When one reference value is set for each of the three types of resources, the behavior of the resident is normal and abnormal as in the case where one reference value θe is set for the power. Since it becomes a classification of a kind, the judgment part 133 should just perform only the judgment mentioned above. On the other hand, when two levels of reference values are set for each of the three types of resources, the resident's behavior is normal as in the case of setting two levels of reference values θe1 and θe2 for power. In addition to abnormalities, there is a classification of abnormal signs. Therefore, when the determination unit 133 determines that any one of the three types of resources is an abnormality sign, the determination unit 133 desirably determines as follows.

  That is, when any of the three types of evaluation values E2, G, and H is in the abnormal range, the determination unit 133 determines that the abnormality is abnormal regardless of the determination results of the other evaluation values E2, G, and H. When the three types of evaluation values E2, G, and H are all in the normal range, it is determined as normal. In addition, when all of the three types of evaluation values E2, G, and H are not in the abnormal range and any of them is in the abnormal indication range, the determination unit 133 determines that it is an abnormal indication. Even when two levels of reference values are set for each of the three types of resources, according to such rules, the determination unit 133 sets the determination result to 3 for normal, abnormal, and abnormal signs. It becomes possible to divide into stages.

  By the way, the configuration example described above evaluates the resident's behavior by comparing the standard data and the time series of the latest measurement data, but as an index indicating that the resident is acting normally, the determination is The total consumption of resources over a period can also be used. That is, if the resident is operating normally in the house, the total resource consumption is considered to be equal to or greater than a predetermined reference value. Therefore, the determination unit 133 combines the total power consumption T, the total gas consumption U, and the total water consumption V in the determination period as shown in Equation 4 together with the determination using the standard data. It is also possible to evaluate the resident's behavior using these total consumptions T, U, and V.

  When the total consumption T, U, or V is used to determine whether or not the resident is normal, there is a possibility of abnormality in both cases where the resident is large or small relative to the normal range. Therefore, the determination unit 133 determines the upper limit value and the lower limit value of the normal range, and there is a possibility that the case where the total consumption T, U, V is between the upper limit value and the lower limit value is normal. Judge.

  For example, if the upper limit value φe2 and the lower limit value φe1 are determined for the total power consumption T, the determination unit 133 determines that the total consumption T is φe1 ≦ T <φe2 as a normal range. To do. The determination result regarding the total consumption amount T is not used alone, but is combined with the determination result using the evaluation value E2. Assume that the evaluation value E2 is determined as normal or abnormal by only one reference value θe.

  When the total consumption T is in the normal range, the determination unit 133 determines that the evaluation value E2 is in the normal range as a normal candidate, and even if the total consumption T is in the normal range, the evaluation value E2 If is in the range of abnormality, it is judged as a sign of abnormality. The signs of abnormality in this case are presumed that the behavior is the same as in the normal case, but the time zone for the behavior is different.

  If the total consumption T is in the abnormal range, the determination unit 133 determines that the evaluation value E2 is abnormal or a sign of abnormality if the evaluation value E2 is in the abnormal range. However, if T <φe1, there is a possibility that the resident is absent from the house (such as going out). Note that, when the total consumption T is in the abnormal range, the evaluation value E2 does not fall within the normal range, so this combination is not considered.

  The above-described judgment rules are collectively shown in FIG. The operation of the determination unit 133 described above is when the resource is power, but other resources may be determined according to similar rules.

  When integrating the determination results for a plurality of resources, the determination unit 133 may combine the determination results as follows to make a final determination. That is, the determination unit 133 determines that all three types of resources are normal candidates and determines that the evaluation value is abnormal if all the evaluation values E2, G, and H are in an abnormal range. In addition, when any of the three types of resources is in the abnormal range (that is, the evaluation values E2, G, and H are in the abnormal range), the determination unit 133 may determine that it is a sign of abnormality. However, the integration rules described above are only examples, and when making a safer determination, the final determination result may be abnormal when any of the three types of resources is in the abnormal range. There may be rules.

  As described above, in the present embodiment, regarding the power among the three types of resources, the measurement data is the power amount per unit period (for example, 30 minutes) in the determination period (for example, one day) for each branch circuit. Is compared with the standard data which is the time series of the measurement data in normal time. That is, the determination unit 133 determines the normal range, the abnormal range, the abnormal sign range, and the like regarding the evaluation value E1 or the evaluation value E2 corresponding to the distance (Manhattan distance) between the time series of the latest measurement data and the standard data. The judgment result classified into is output.

  Thus, in the structure which judges whether a resident is normal based on the usage-amount of the electric power for every branch circuit, since it is not necessary to provide a communication function in each of the electric equipment 31, the action evaluation apparatus 10 of this embodiment is It can be provided at a relatively low cost. Moreover, since the behavior evaluation apparatus 10 of the present embodiment is configured to measure the amount of power in the unit period for each branch circuit, it can be used regardless of the type of the electric device 31 used in the house.

  In order to determine whether the resident's behavior is normal or not, the determination unit 133 can also use the usage state of gas and tap water in addition to electric power. High judgment is possible. The determination result by the determination unit 133 is transmitted to the notification device 60 through the communication unit 16.

  Therefore, when the resident of the house is an elderly person living alone or a single employee, the family can check whether the resident has an abnormality from a distance by having the notification device 60 in the family. It becomes possible. In addition, when two levels of reference values are set, it is possible to determine not only normal and abnormal but also normal and abnormal signs. When notified, it becomes possible to check the resident by telephone or the like.

  In this way, it is possible to confirm whether or not the resident's life is normal from a distance by the notification device 60, but there is no psychological burden on the resident because the camera is not used, and the resident is allowed to perform a specific operation. Since there is no need, residents can live a normal life.

  In addition, since standard data is generated based on the time series of measurement data according to the manner in which the resident uses resources during normal times, it is possible to automatically generate standard data suitable for the resident's life. . In other words, it is possible to automatically create standard data necessary for judging whether or not a resident's behavior is normal, without human work, and it is easy to create standard data. Since the standard data is set according to the residents, it is possible to make a highly reliable judgment.

  In addition, since the use of resources for each unit period in the determination period is used to determine whether or not the resident's behavior is normal, if the determination period is set to match the cycle in which the resident lives, the time zone There is also an advantage that initial setting at the time of introduction is easy.

  The above-described embodiment is an example of the present invention, and the present invention is not limited to the above-described embodiment, and other embodiments may be used without departing from the technical idea of the present invention. If so, various changes can be made according to the design and the like.

  For example, although the Manhattan distance is used for the evaluation values E1, E2, G, and H, it is also possible to use the Euclidean distance using the square of the difference instead of the absolute value of the difference as the evaluation value. Moreover, when considering gas and tap water in addition to electric power as a resource, you may use only one instead of both gas and tap water.

  Furthermore, since there is a possibility that the determination unit 133 has no resident in the house (such as going out) when T <φe1, there is a possibility of going out to a distant family through the notification device 60 at this time. It is possible to notify that there is. Of course, this is because when a so-called security system or answering machine is installed in the resident's house, the resident himself / herself may forget to set up the absence (answering machine) when going out. Even if you tell the residents themselves, the effect is great.

DESCRIPTION OF SYMBOLS 10 Behavior evaluation apparatus 11 Acquisition part 16 Communication part 20 Measuring apparatus 30 Equipment 31 Electric equipment 32 Gas equipment 33 (Consuming tap water) Equipment 40 Distribution board 60 Notification apparatus 121 1st memory | storage part 122 2nd memory | storage part 131 First calculation unit 132 Second calculation unit 133 Judgment unit 134 Selection unit

Claims (10)

An acquisition unit that acquires the consumption of resources by a device selected from a plurality of devices used in a house from a measurement device;
A first storage unit that stores, as standard data, a time series of the measurement data during normal times in a predetermined determination period, using measurement data that is an integrated value for each unit period of the consumption acquired by the acquisition unit;
A first calculation unit that calculates a distance between the standard data and a time series of measurement data in the determination period acquired by the acquisition unit as an evaluation value;
Using a result of comparing the evaluation value with a reference value, a determination unit that determines whether or not the behavior of the resident of the house is normal,
A behavior evaluation device comprising: a communication unit that notifies the notification device of a result of the determination by the determination unit. A second storage unit that stores the measurement data over a plurality of determination periods;
The behavior evaluation apparatus according to claim 1, further comprising: a second calculation unit that generates the standard data using the measurement data in a plurality of determination periods in normal times stored in the second storage unit. The device is a set of electrical devices that receive power from a branch circuit branched into a plurality of systems by a distribution board, and the consumption is an amount of power measured for each branch circuit,
The acquisition unit outputs the measurement data for each of the selected devices,
The first storage unit stores the standard data for each selected device,
The behavior evaluation apparatus according to claim 1, wherein the first calculation unit calculates a value obtained by adding the distances obtained for each branch circuit for the selected branch circuit as an evaluation value. The equipment includes other equipment that consumes resources other than electric power in addition to a set of electrical equipment that receives power from a branch circuit that is branched into a plurality of systems by a distribution board, and the consumption by the set of electrical equipment is the amount of consumption The amount of power measured for each branch circuit,
The acquisition unit outputs the measurement data for each of the selected devices,
The first storage unit stores the standard data for each selected device,
The first calculation unit calculates a first evaluation value obtained by summing the distances obtained for each branch circuit, and a second evaluation value that is the distance obtained for each of the devices with respect to the other device. ,
The determination unit integrates the results of comparing the first evaluation value and the second evaluation value calculated by the first calculation unit with the reference value, so that the behavior of the resident of the house can be improved. The behavior evaluation apparatus according to claim 1, wherein the behavior evaluation apparatus determines whether or not it is normal. The behavior evaluation apparatus according to any one of claims 1 to 4, wherein the acquisition unit further includes a selection unit that selects a device that acquires the consumption amount from the measurement device. The standard data is classified for each attribute of the determination period,
The behavior evaluation apparatus according to claim 1, wherein the first calculation unit selects the standard data according to an attribute of the determination period related to a time series of the measurement data. The determination unit combines a result of comparing the total consumption of resources for each device in the determination period with a normal range and a result of comparing the evaluation value with the reference value according to a predetermined rule. The behavior evaluation apparatus according to any one of claims 1 to 6, wherein it is determined whether or not the behavior of a resident of the house is normal.   A behavior evaluation system comprising the behavior evaluation device according to claim 1 and the notification device. The acquisition unit acquires the consumption of resources from the device selected from the multiple devices used in the house from the measuring device,
Using the measurement data that is an integrated value for each unit period of the consumption acquired by the acquisition unit, the first storage unit stores the time series of the measurement data during normal times in a predetermined determination period as standard data,
The first calculation unit calculates the distance between the standard data and the time series of measurement data in the determination period acquired by the acquisition unit as an evaluation value,
The determination unit determines whether the behavior of the resident of the house is normal by comparing the evaluation value with a reference value,
The communication evaluation unit notifies the notification device of the determination result of the determination unit.   A program for causing a computer to function as the behavior evaluation apparatus according to any one of claims 1 to 7.

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