JP3199536B2 - Usage analysis device for each gas appliance - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas appliance use amount analyzing apparatus which is used, for example, for predicting gas demand with high accuracy and which analyzes gas use amount for each gas appliance.

[0002]

2. Description of the Related Art It is important to predict gas demand in the planning of gas supply, the development of gas appliances, and the planning of sales. Here, if it is possible to grasp not only the sum of the gas demands but also the usage status of the gas appliances of individual consumers, this can be used as basic data for performing highly accurate gas demand prediction.

[0003] Conventionally, as a method of analyzing the gas consumption of each consumer, monthly meter reading data and equipment ownership information are used.
There is known a method of statistically estimating the usage amount for each gas appliance and each field by multivariate analysis. It should be noted that the term "by field" refers to the type of gas usage of a consumer such as heating, hot water supply, and a kitchen. As described above, as a method of statistically estimating the amount of use, the amount of gas used is Y, and the number of devices i is X.
i, when the amount of use per appliance i is αi, Y
Assuming that there is a relationship of = Σαi · Xi, a method of estimating the amount of use per appliance using the least squares method or estimating the amount of use of each gas appliance from a variation pattern of monthly use amount is performed. There are methods.

[0004]

However, Y = Σ
The method of estimating the amount of use per appliance from the relationship between αi and Xi has a problem that the amount of use per appliance cannot be accurately estimated because of the interaction between the appliances.

[0005] In the statistical analysis method as described above, how and what kind of gas appliances are used is determined based on only the information of "the total amount of gas consumption" and "owned gas appliances" of each customer. (When to start using and when to end using) cannot be determined. This is due to the fact that a plurality of gas appliances may be used at the same time, the amount of gas used by one gas appliance varies in a complicated manner depending on the use situation, and the like.

[0006] On the other hand, Japanese Patent Application Laid-Open No. 4-119401 discloses a technique for discriminating a gas appliance being used. This technique is applied to estimating gas consumption by appliance or field. Is also conceivable. In this technique, every time a change in the gas flow rate is detected, registration or deletion of a gas appliance presumed to be used, or an increase or decrease in the flow rate of one gas appliance is determined.

In this technique, every time a change in the gas flow rate is detected, registration or deletion of a gas appliance or an increase or decrease in the flow rate of one gas appliance is determined. This is performed based only on the information of the increase in the gas flow rate, that is, the information at the start of use of the gas appliance. However, in actual gas appliances, since the gas flow is accompanied by complicated transient changes at the start of use,
If the gas appliance is determined based only on the information at the start of use, there is a high possibility that an incorrect determination will be made. Therefore, it is difficult to accurately estimate the amount of gas used for each instrument or each field by applying the technique disclosed in the above publication.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a gas appliance use amount analyzing apparatus capable of accurately analyzing gas use amount of each gas appliance. .

[0009]

According to a first aspect of the present invention, there is provided a gas appliance use amount analyzing apparatus, comprising: a data storage means for storing gas total use amount data which is a sum of gas use amounts of all gas appliances at each time. Reading the total gas usage data stored by the data storage means and determining a stable period in which the change in the total gas usage data is within a predetermined range; and a stable period determination means. Use state change determining means for determining the start or end of use of the gas appliance based on the change amount of each gas total use amount data in two adjacent stable periods, and based on the determination result of the use state change determining means. Data decomposing means for decomposing total gas usage data into gas usage data for each gas appliance, and gas usage data for each gas appliance decomposed by the data decomposing means. Based on the data, in which a gas appliance identifying means for identifying a corresponding gas appliance to the gas consumption data.

In this gas appliance usage analysis device, the data storage means stores the total gas usage data which is the sum of the gas usage of all the gas appliances at each time, and the stable period discriminating means stores the gas total usage data. A stable period in which the change in the usage data is within a predetermined range is determined. Then, the use state change determining means determines the start or end of use of the gas appliance based on the change amount of each gas total use amount data in two adjacent stable periods, and decomposes the data based on the determination result. By means, the total gas usage data is decomposed into gas usage data for each gas appliance. Further, based on the gas usage data of each gas appliance, the gas appliance corresponding to each gas usage data is specified by the gas appliance specifying means.

According to a second aspect of the present invention, there is provided a gas appliance usage analysis apparatus according to the first aspect, wherein the gas appliance specifying means includes a gas appliance obtained from gas usage data per gas appliance. Of gas usage at the start of use and gas usage at the end of use, and gas appliance usage time obtained from gas usage data for each gas appliance. The gas appliance is specified.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 18 relate to one embodiment of the present invention.

FIG. 1 is a block diagram showing the configuration of a gas appliance usage analysis device according to the present embodiment. As shown in this figure, the gas appliance usage analysis device of the present embodiment includes a data analysis unit 10. A data logger 16, a data storage unit 17, and a graph display unit 18 are connected to the data analysis unit 10. The data logger 16 is connected to a pulse transmitter 19 and a time counter 20. The pulse transmission device 19 is attached to a film-type gas meter provided in the main pipe for all gas appliances whose gas usage is to be analyzed, and each time the crankshaft interlocks with the expansion and contraction of the film of the gas meter makes one rotation. It is a device that emits a pulse. The data logger 16 refers to the time measured by the time counting unit 20 and refers to the “pulse arrival time” that is the time at which the pulse arrived from the pulse transmission device 19 and the “pulse interval” that is the interval between the “pulse arrival time”. "Time".

The data analysis unit 10 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12,
An AM (random access memory) 13 and an input / output port 14 are provided, and these are connected to each other by a bus 15. The input / output port 14 is connected to the above-described data logger 16, data storage unit 17, and graph display unit 18. The data logger 16 does not necessarily need to be connected to the input / output port 14 by wire.
The data collected by the data logger 16 may be stored in a floppy disk or the like, and this data may be input to the data analyzer 10 from the input / output port 14 via a floppy disk drive or the like. In the data analysis unit 10, the CPU 11 executes the programs stored in the ROM 12 using the RAM 13 as a working area, thereby realizing each function described below.

The graph display section 18 is composed of a display, a printer and the like.

FIG. 2 is a functional block diagram showing functions of the gas appliance usage analysis device of FIG. As shown in the figure, the gas appliance usage analysis device of the present embodiment includes a data collection unit 21 that collects gas total usage data that is the sum of gas usage of all gas appliances at each time, A data storage unit 22 for storing the total gas usage data collected by the data collection unit 21; a data reading unit 23 for reading the total gas usage data stored by the data storage unit 22; Based on the read total gas usage data, the stable period determining unit 24 determines a stable period in which the change in the total gas usage data is within a predetermined range, and the adjacent two determined by the stable period determining unit 24. Use state change judgment to judge the start or end of use of gas appliances based on the change amount of each gas total use amount data in two stable periods Step 25, data decomposing means 26 for decomposing the total gas usage data into gas usage data per gas appliance based on the discrimination result of the use state change discriminating means 25, and decomposed by the data decomposing means 26 Gas appliance specifying means 27 for specifying a gas appliance corresponding to each gas usage data based on the gas usage data for each gas appliance, and gas usage data and gas for each gas appliance decomposed by the data decomposing means 26. A drawing unit 28 is provided which draws a graph of the change over time in gas usage data for each gas appliance and for each field based on each piece of information on the gas appliances specified by the appliance specifying unit 27.

In FIG. 2, the data collecting means 21 includes a data logger 16, a pulse transmitting device 19, and a time counting unit 2.
0, the data storage unit 22 is realized by the data storage unit 17, the drawing unit 28 is realized by the data analysis unit 10 and the graph display unit 18, and the other units are realized by the data analysis unit 10.

Next, an outline of the operation of the gas appliance usage analysis device of this embodiment will be described with reference to the flowchart of FIG.

The gas appliance usage analysis device first collects total gas usage data by the data logger 16 (data collection means 21) and stores the total gas usage data in the data storage section 17 (data storage means 22). (Step S101). Next, the data analysis unit 10 reads the total gas usage data from the data storage unit 17 in the order of time from the data storage unit 17 by the data reading unit 23 (Step S).
102), based on this total gas usage data, the stable period determining means 24 determines whether the change in the total gas usage data is within a predetermined range or a transition period other than the stable period (step S103). Then, it is determined whether or not a stable period is reached (step S104). If it is not the stable period (N), that is, if it is in the transition period, the next data is read (step S).
102). In the case of a stable period (Y), based on the amount of change in each gas total usage data in two adjacent stable periods,
The use state change determining means 25 determines whether the use state of the gas appliance has changed, that is, whether the use of the gas appliance has started, the use has ended, or the use state has not changed (step S105). It is determined which usage state is being used (step S106). When it is determined that the use is started, the “use start process” described later is performed (step S107), and the next data is read (step S107).
102). If it is determined that the use has ended, a “use end process” described later is performed (step S108). If it is determined that there is no change in the use state, the “other processing” described later is performed (step S109), and the next data is read (step S102).

The data analysis unit 10 performs a "use termination process".
After performing (Step S108), the data decomposing means 26 decomposes the total gas usage data into gas usage data for each gas appliance (Step S110). Next, based on the gas usage data of each decomposed gas appliance, the gas appliance corresponding to each gas usage data is specified by the gas appliance specifying means 27 (step S11).
1). Next, it is determined whether the analysis has been completed for all data stored in the data storage unit 17 (step S11).
2) If not completed (N), the next data is read (step S102). When the analysis is completed for all data (step S112; Y), the data analysis unit 10
Based on the gas usage data of the decomposed gas appliances and the information of the specified gas appliances, the drawing unit 28 analyzes the temporal change of the gas usage data for each gas appliance and for each field as an analysis result. Graphing and graph display unit 1
8, and the operation ends.

Next, each processing during the operation shown in FIG. 3 will be described in detail.

First, the data collected by the data logger 16 is composed of "pulse arrival time", "pulse interval time", and "number of pulses" in order to minimize the required number of data. "Pulse interval time" is determined by the number of gas meters and the gas flow rate. If there is no change in the gas flow rate, the "pulse interval time" is constant, so the period in which there is no change in the gas flow rate is when the gas flow rate changes from the first "pulse arrival time" in that period The time until the "pulse arrival time" is stored as the "pulse interval time".
The total number of pulses from the first pulse in the period to the pulse immediately before the pulse when the gas flow rate changes next is stored as the “number of pulses”. The reason why not only the change in the flow rate but also the number of pulses is stored is to analyze the flow rate data and accurately determine whether the gas appliance is used or not.

The data analysis unit 10 calculates the “pulse interval time”
From the “pulse number” and “pulse number”, “flow rate” which is an average gas flow rate between pulses is calculated. Specifically, the number of pulses is P,
Assuming that the “pulse interval time” is T and the gas flow rate flowing between one pulse is k, the “flow rate” R is obtained by the following equation.
Note that k is 0.9 (liter / liter) in the gas meter of No. 3.
Pulse), and in the gas meter of No. 5 or 7, it is 1.
74 (liter / pulse).

[0024]

R = P × k × 11 / T

The "pulse arrival time" may be calculated from the arrival time of the first pulse and each pulse interval time.

In this way, the total gas consumption data composed of “pulse arrival time”, “flow rate”, “pulse interval time” and “number of pulses” is created, and the data storage unit 17
Is stored. FIG. 4 shows an example of the total gas consumption data. When the analysis starts, the data analysis unit 10 reads the total gas usage data one by one.

As described above, the total gas consumption data is created based on the pulse data because, when a gas meter of a film type is used, the finest data is obtained in practical use. . Therefore, the total gas consumption data is not limited to the above-mentioned format, but may be any data as long as the gas flow rate at short time intervals is known.

Next, discrimination between the stable period and the transition period (Step S)
103) is performed as follows. That is, when the “pulse interval time” differs only by ± 1% between the preceding and succeeding pulses, the gas use state is determined to be “a stable period”. In other cases, it is determined that “it is a transition period”.
If it is determined that “it is in the transitional period”, the next total gas usage data is read. When it is determined that “the stable period”, the process proceeds to the next step, which is to determine a change in the usage state of the gas appliance. As described above, in this embodiment, the gas appliance to be used is determined in principle using the change in the total gas usage data in the stable period, without using the total gas usage data in the transition period. This is because if the gas equipment to be used is determined using the data in the transition period, the equipment may be erroneously determined.

Next, determination of a change in the use state of the gas appliance (step S105) is performed as follows. First,
In order to make this determination, the following “change amount” is defined.
Change amount = Flow rate in current stable period-Flow rate in stable period when it is determined that there is a change immediately before

When the change amount is equal to or more than the minimum usage level of the gas appliance, for example, 500 kcal / h or more, and the change rate is ± 5% or more, the use state of the gas appliance is changed. Judge that something has changed.
Then, in the case of a change in which the total gas usage increases, it is determined that “the use of gas appliances has started”, and a “use start process” (step S107) described below is performed. It is determined that "the use of the gas appliance has been completed", and the "use completion process" (step S108) described later is performed. When it is determined that there is no change in the usage state of the gas appliance, "other processing" (step S109) described later is performed.

In the "use start processing", the following (S1)
The processing of (S2) is performed. (S1) The gas appliance is provisionally determined based on the value of the "change amount" when it is determined that the use of the gas appliance is started. (S2) The data storage unit 17 stores three pieces of information such as the use start time, the value of the “change amount”, and the number of gas appliances currently in use.

It should be noted that the determination of the gas appliance in (S1) is only temporary, and the complete determination of the gas appliance is described in “Specification of Gas Appliance” (step S111) described later.
Do with.

Here, gas appliances are hot water appliances, heating appliances,
The operation of the "use start process" when there are three kitchen appliances will be described with reference to the flowchart of FIG. In this behavior,
First, the “change amount” δ is larger than the hot water supply determination level C _k ,
It is determined whether the hot water supply apparatus is not in use (OFF) (step S121). If this condition is satisfied (Y), it is determined that the appliance whose use has been started is a hot water appliance, and the "hot water supply ON process" of the process (S2) for the hot water appliance is performed (step S122). ),finish. When the above condition is not satisfied (step S121;
N), the "amount of change" δ determines whether larger heating determination level C _d (step S123). If this condition is satisfied (Y), it is determined that the appliance whose use has been started is a heating appliance, and the “heating-on process” that is the process of (S2) for the heating appliance is performed (step S12).
4), end. If it does not satisfy the conditions of step S123 (N), the "amount of change" δ determines whether larger kitchen determination level C _c (step S125). If this condition is satisfied (Y), it is determined that the appliance whose use has been started is a kitchen appliance, and (S
The “kitchen-on process” of the process 2) is performed (step S126), and the process ends. If the condition of step S125 is not satisfied (N), it is determined that the state has not changed to the use start state, and the process proceeds to “other processing” (step S109) (step S127).

In order to make the determination as shown in FIG. 5, the set level of each gas appliance is set according to the appliance owned by the customer.
For example, it may be set as follows. Hot water supply setting level = 10000 kcal / h Heating setting level = 2000 kcal / h Kitchen setting level = 500 kcal / h

Each setting level is determined with reference to the appliance information. Therefore, as shown in FIG. 7, a table (equipment information) including “rated value”, “set level”, “lower limit level” and the like for all gas appliances is stored in the data storage unit 17.
To save.

In the "use termination process", the following processes (E1) and (E2) are performed. (E1) It is determined which of the gas appliances stored in the data storage unit 17 as the use state is in the use end state. (E2) The number of gas appliances currently in use is updated, and a “hold value” described later is initialized.

The determination of the appliance whose use has been completed is performed as follows. (E1) The difference between the value of the “change amount” of the appliance stored as the use state (hereinafter referred to as “registered flow rate”) and the “change amount” when it is determined that the gas appliance has been used is divided by the registered flow amount. When the value N is within a certain range (for example, within 10%), it is determined that the appliance has been used, and
The processing of (E2) is performed. (E2) For a plurality of appliances, when the condition of (e1) is satisfied, it is determined that the appliance having the smallest absolute value of N has been used. (E3) If (e1) is not satisfied, the difference between the current flow rate and the registered flow rates of the appliances other than the registered appliance to be determined is the lower limit level of the registered appliance to be determined (FIG. 7).
If it is smaller than (refer to), it is determined that the registered appliance to be determined is in the use end state, and the processing of (E2) is performed. This is an exceptional determination condition for a device having a large “change amount”. When the “variation amount” is large, the error included in the “variation amount” also becomes large, so such an exceptional condition is required. (E4) If the conditions of (e1) and (e3) are not satisfied for any of the appliances, it is determined that the appliance has not changed to the end-of-use state, and the process proceeds to “other processing”. This (e4) corresponds to the proportional control device, and the “reserved value” obtained in “other processing” is used to determine the end of use of the device whose usage level gradually decreases. Used for

Here, gas appliances are hot water appliances, heating appliances,
The operation of the "use termination process" when there are three kitchen appliances will be described with reference to the flowchart of FIG. In the following description, δ is the “change amount”, L is the current usage level, L _k is the registered flow rate of the hot water supply equipment, L _d is the registered flow rate of the heating equipment, L _c is the registered flow rate of the kitchen equipment, C _´k is the hot water supply use end determination level (lower limit level of hot water supply equipment), σ is the reserved value,
ε is an allowable range (= 0.1).

In this operation, first, it is determined whether or not the hot water supply off condition 1 is satisfied (step S131). The hot water supply off condition 1 corresponds to the condition (e1) of the determination of the appliance in the use end state. Specifically, satisfying the hot water supply off condition 1 means that the following two expressions are satisfied. At least one must be satisfied.

[0040]

| (Δ + σ + L _k ) / L _k | <ε | (δ + L _k ) / L _k | <ε

If the hot water supply off condition 1 is satisfied (step S131; Y), "hot water supply off processing" as the processing of (E2) for the hot water supply apparatus is performed (step S13).
3), end. If the hot water supply off condition 1 is not satisfied (step S131; N), it is determined whether the hot water supply off condition 2 is satisfied (step S132). Hot water supply off condition 2
(E3) of the determination of the appliance in the use end state described above
This is specifically represented by the following equation.

[0042]

L−Σ (L _d + L _c ) <C ′ _k

If the hot water supply off condition 2 is satisfied (step S132; Y), a "hot water supply off process" is performed (step S133), and the process ends. If the hot water supply off condition 2 is not satisfied (step S132; N), it is determined whether the heating off condition is satisfied (step S134). The heating-off condition is determined as (e) in the determination of the appliance in the end-of-use state.
This corresponds to the condition of 1). Specifically, satisfying the heating-off condition means satisfying at least one of the following two expressions.

[0044]

| (Δ + σ + L _d ) / L _d | <ε | (δ + L _d ) / L _d | <ε

When the heating-off condition is satisfied (step S
134; Y) performs a “heating off process” which is the process of (E2) for the heating appliance (step S135),
finish. When the heating-off condition is not satisfied (step S
135; N) determines whether or not the kitchen off condition is satisfied (step S136). The kitchen-off condition corresponds to the condition (e1) of the above-described determination of the appliance in the end-of-use state. Specifically, satisfying the kitchen-off condition means that at least one of the following two expressions is satisfied. Is to satisfy.

[0046]

| (Δ + σ + _Lc ) / _Lc | <ε | (δ + _Lc ) / _Lc | <ε

If the kitchen off condition is satisfied (step S
136; Y) performs a “kitchen off process” which is the process of (E2) for the kitchen appliance (step S137),
finish. If the kitchen off condition is not satisfied (step S
136; N) is “Other processing” (step S10).
The process moves to 9) (step S138).

FIG. 8 is a flowchart showing the operation of "other processing". In this “other processing”, first, it is determined whether the number n of appliances currently in use is 1 (step S14).
1). If the number n of appliances currently in use is 1 (Y), the registered flow rate of the appliance is updated (step S142), and the process ends. If the number n of appliances currently in use is not 1 (N), the “change amount” at that time is stored in the data storage unit 17 as a reserved value (step S143), and the process ends.
In the next use end determination, the actual “change amount” or the sum of the “reserved values” is regarded as the “change amount” and used for the determination (see hot water supply off condition 1, heating off condition, kitchen off condition).

Next, the decomposition of the gas into the amount of gas used for each appliance (step S110) will be described with reference to FIGS. In the following description, Vi (t) is the estimated gas usage at time t of gas appliance i, and f (t)
The time total gas consumption data in t, t ₀ is the pulse arrival time of use immediately before the start of the appliance, t _n is the use end time of the instrument, t _k is the time of starting the use of other instruments.

The calculation for decomposing the gas usage of the gas appliance i is performed as follows. However, the decomposition process is
To start with a use end time t _n of a gas appliance.

As shown in FIG. 9, when there is no use of another gas appliance halfway, the gas consumption data per gas appliance can be decomposed by the following equation. Where L = f
(T ₀ ), and t ₀ ≦ t ≦ t _n .

[0052]

## EQU6 ## Vi (t) = f (t) -L

As shown in FIG. 10, when the use of another gas appliance is started on the way, the gas consumption data per gas appliance can be decomposed by the following two equations.

[0054]

[Equation 7] Vi (t) = f (t ) -L (t 0 ≦ t ≦ t
When _{k) Vi (t) = f} (t k) -L ( when t _k ≦ t ≦ t _n)

As shown in FIG. 11, when a plurality of appliances are used and there is a start and end of use of another gas appliance along the way, firstly, f is used after the start of use of the gas appliance by the following equation. (t) a is stood up or fallen time as t _k, to apply the above equation.

[0056]

T _k = min ｛t | t ₀ <t <t _n ; t
Is the rising or falling time of f (t).

[0057] In the example of FIG. 11, the instrument used was started at t ₀ instrument 1, t ₁ instrument 2 is initiated instrument used,
When an instrument used was started at t ₂ and instrument 3, if the first use of the instrument 1 termination is determined by t _n, from t ₀ t
Time t ₁ when f (t) first rises during _n
Is assumed to be tk. Accordingly, it is determined that the appliance 1 has been used at the usage level L until t _n . This instrument 1
Becomes a.

When it is determined that the use of the appliance 3 has been completed at time t _x after a further time elapses, the time t _n at which f (t) first falls between t ₂ and t _x is set to t _k . As a result, the total usage of the device 3 becomes c ₁ + c ₂ .

[0059] If more time is used ends of the device 2 at t _y and discrimination elapses, initially the time t ₂ has risen f (t) is a t _k between the t ₁ of t _y. As a result, the total usage of the device 2 becomes b ₁ + b ₂ .

Next, the gas appliance is specified (step S11).
1) will be described with reference to FIGS.

After the total gas consumption data is decomposed into gas consumption data for each gas appliance in the processing up to this point, the gas appliance is specified using the usage characteristics and control characteristics of the gas appliance.
In the present embodiment, three pieces of information of “usage level at the start of use”, “usage time”, and “usage level at the end of use” are used as discriminants for this identification. The usage characteristics of gas appliances are, for example, the characteristics that heating appliances are often used for a longer time than hot water appliances and kitchen appliances. Focusing on this characteristic, "use time" is used as a discrimination factor.
In addition, the control characteristics of the gas appliance include, for example, a gas appliance (particularly a heating appliance) changes from a proportional control according to the load to an on / off control that automatically repeats ignition and extinguishment. Paying attention to this characteristic, the "consumption amount level at the end of use", which is the flow level immediately before turning off of the on / off that occurs periodically, is used as a discriminant factor.

The gas appliance is specified by determining a discriminant function using the above three discriminants as variables for each gas appliance, and when a value of each discriminant is given, the gas having the highest discriminant function value is determined. This is done by identifying the device. Since the coefficient of the discriminant function is obtained from the actually measured data, even when information on the control characteristics of the gas appliance is not given,
A discriminant function can be determined. In this case, a discriminant function is determined from some actually measured data so that the discrimination rate of the appliance is the highest.

Even when the control characteristics of the owned gas appliance are unknown, the “usage level at the start of use” and the “use time”
Although it is possible to discriminate the appliance using only the information, the information of the above three discrimination factors is useful for more accurate discrimination.

FIG. 12 shows the “usage level at start of use”, “usage time”, and “usage level at end of use” when three gas appliances are a hot water appliance, a heating appliance, and a kitchen appliance. 3 shows an example of a discriminant function using the three pieces of information as variables. This figure shows a discriminant function in a cross section where “usage level at start of use” = “usage level at end of use”. In this figure, A indicates an area determined as a kitchen appliance, B indicates an area determined as a heating appliance, and C indicates an area determined as a hot water appliance.

FIG. 13 shows a discriminant function using two pieces of information, “use level at start of use” and “use time” as variables when three gas appliances are a hot water appliance, a heating appliance, and a kitchen appliance. FIG.

FIG. 14 shows an example of the relationship between the “usage level at the start of use” and the value of the discriminant function (discrimination value) for each appliance when “use time” is T ₁ in FIG. Things. In this figure, A ₁ is the discrimination value of the kitchen appliance,
B ₁ indicates the discrimination value of the heating appliance, and C ₁ indicates the discrimination value of the hot water appliance.

Finally, the drawing of the analysis result (step S11)
3) will be described. By the processing up to this point, the usage data for each gas appliance is obtained. Based on this data, the data analysis unit 10 graphs the analysis results for each gas appliance and each field and outputs it from the graph display unit 18. .

FIGS. 15 and 16 show examples of analysis results for each gas appliance used. In FIG.
1 is data on the amount of water heaters used by gas central heating, 52 is data on the amount of heaters used by gas central heating, 53 is data on the amount of fan heaters (heating equipment) used, and 54 is a gas table (kitchen equipment).
Shows usage data. Also, in FIG.
Numeral 61 indicates usage data of a gas table (kitchen appliance),
Numeral 62 indicates usage data of a large-sized water heater (hot-water heater).

FIGS. 17 and 18 show examples of analysis results for each field. FIG. 17 is an example of a winter holiday,
FIG. 18 is an example of a weekday in summer.

As described above, according to the present embodiment,
Using the total gas usage data during the stable period of gas usage, the start and end of use of the gas appliance, or simply increasing or decreasing the usage amount, is determined, and the total gas usage data is determined based on the determination result. Decompose into unit gas usage data, and at least "Usage level at start of use" and "Usage time" of gas appliances among "Usage level at start of use" and "Usage level at end of use" Are used as discriminating factors to specify a gas appliance. Therefore, compared to the conventional case where the used gas appliance is determined only from the increase in the amount of use at the start of use accompanied by a transient change,
Extremely accurate analysis of gas usage for each gas appliance becomes possible. This analysis result can be used, for example, as data for performing highly accurate demand prediction in a specific area, usage prediction for each appliance, and usage prediction for each field. It can also be used as data for investigating the correlation between weather and gas usage.

[0071]

As described above, according to the gas appliance use amount analyzing apparatus of the first aspect, the stable period in which the change of the total gas use amount data is within a predetermined range is determined, and two adjacent stable states are determined. Use of gas appliances is determined based on the amount of change in the total gas consumption data in each period, and based on this determination result, the total gas consumption data is decomposed into gas consumption data for each gas appliance. Since the gas appliances corresponding to each gas consumption data are specified based on the gas consumption data of each gas appliance, the gas consumption for each gas appliance is determined only from the increase in the gas consumption at the start of use. As compared with the case where the amount is determined, there is an effect that the gas usage amount for each gas appliance can be analyzed with higher accuracy.

Further, according to the gas appliance use amount analysis device of the second aspect, at least the gas use amount at the start of use of the gas use amount at the start of use and the gas use amount at the end of use of the gas appliance. And the gas appliance is specified based on each information of the usage time of the gas appliance, in addition to the above effects,
There is an effect that the gas appliance can be more accurately determined by using the usage characteristics and control characteristics of the gas appliance.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a gas appliance usage analysis device according to an embodiment of the present invention.

FIG. 2 is a functional block diagram showing functions of the gas appliance usage analysis device of FIG. 1;

FIG. 3 is a flowchart showing the operation of the gas appliance usage analysis device of FIG. 1;

FIG. 4 is an explanatory diagram showing an example of total gas usage data used in the gas appliance usage analysis device of FIG. 1;

FIG. 5 is a flowchart showing an operation of a use start process during the operation shown in FIG. 3;

FIG. 6 is a flowchart showing an operation of a use termination process during the operation shown in FIG. 3;

FIG. 7 is an explanatory diagram showing a table including setting levels used in the use start processing shown in FIG. 5;

FIG. 8 is a flowchart showing the operation of another process during the operation shown in FIG. 3;

FIG. 9 is a characteristic diagram for explaining decomposition of gas usage data in the gas appliance usage analysis device of FIG. 1;

10 is a characteristic diagram for describing decomposition of gas usage data in the gas appliance usage analysis device of FIG. 1;

11 is a characteristic diagram for explaining decomposition of gas usage data in the gas appliance usage analysis device of FIG. 1;

12 is a characteristic diagram showing an example of a discriminant function for specifying a gas appliance in the gas appliance-specific usage analysis device of FIG. 1;

FIG. 13 is a characteristic diagram showing another example of a discriminant function for specifying a gas appliance in the gas appliance-specific usage analysis device of FIG. 1;

FIG. 14 is a characteristic diagram partially showing the discriminant function shown in FIG. 13;

FIG. 15 is a characteristic diagram showing an example of an analysis result for each gas appliance used by the gas appliance usage analysis device of FIG. 1;

FIG. 16 is a characteristic diagram showing another example of the analysis result for each gas appliance used by the gas appliance usage analysis device of FIG. 1;

FIG. 17 is a characteristic diagram showing an example of an analysis result in each field by the gas appliance usage analysis device of FIG. 1;

FIG. 18 is a characteristic diagram showing another example of an analysis result of each field by the gas appliance usage amount analyzing apparatus of FIG. 1;

[Explanation of symbols]

 Reference Signs List 10 data analysis unit 16 data logger 17 data storage unit 18 graph display unit 19 pulse transmission device 20 clock unit

Claims (2)

(57) [Claims] 1. A data storage means for storing total gas usage data, which is the sum of gas usage of all gas appliances at each time, reading the total gas usage data stored by the data storage means, A stable period determining means for determining a stable period in which a change in the total usage data is within a predetermined range; and a change amount of each gas total usage data in two adjacent stable periods determined by the stable period determining means. Means for determining use start or end of use of the gas appliance, and, based on the result of the determination by the use state change determiner, decomposes the total gas consumption data into gas consumption data for each gas appliance. Data decomposing means, and a gas appliance corresponding to each gas usage data based on the gas usage data per gas appliance decomposed by the data decomposing means. Gas appliance by usage analysis apparatus characterized by comprising a gas appliance identifying unit for constant. 2. The gas appliance specifying means according to claim 1, wherein at least one of the gas usage amount at the start of use and the gas usage amount at the end of use of the gas appliance obtained from the gas use amount data of the gas appliance unit. 2. The gas appliance is specified based on each information of the usage amount and the usage time of the gas appliance obtained from the gas consumption data of each gas appliance.
The usage analysis device according to the gas appliance described.