JP5608696B2 - Water usage monitoring system - Google Patents

Description

  The present invention relates to a water usage status monitoring system according to a monitoring device that transmits and receives data through a communication line from a plurality of measuring devices that measure water usage status and collects data.

  2. Description of the Related Art Conventionally, a measuring device that measures the amount of water used is provided with a display unit that displays a measured value, and an administrator visually checks the measured value to grasp the amount used for a certain period. In recent years, a system in which a measuring device includes a communication unit and automatically performs meter reading by transmitting a measured value to a management server at a certain period has also been introduced in heavy snowfall areas and emerging countries.

For example, the technique described in [Patent Document 1] discloses that the state change type is stored in a memory and collated.
[Patent Document 2] discloses a technique for grasping a consumer's living situation based on water supply specification history information of the consumer.
[Patent Document 3] discloses a technology of a system for planning an operation plan with few water outages when a water distribution system fails.

  In [Patent Document 4], a communication terminal provided for each power consumer transmits power information including the amount of power measured by a watt hour meter to the automatic meter-reading server at a certain period, Accumulate the amount. Thus, a technique for predicting a demand timed demand value and transmitting demand information and power information indicating a relationship with a preset target demand value to a service providing terminal is disclosed.

[Patent Document 5] stores the power consumption during communication of the watt-hour meter, and the watt-hour meter with large power consumption reduces the power consumption by lengthening the cycle, and the power meter with low power consumption shortens the cycle. Techniques to do this are disclosed.
[Patent Document 6] discloses a technique for determining that there is no resident when the electric energy measured by the watt-hour meter is “0”.

Japanese Unexamined Patent Publication No. 63-697 JP 7-121677 A JP 2003-105808 A JP 2007-6579 A JP 2010-28168 A JP 2010-256098 A

By the way, in the above-described conventional technology, since the measuring devices communicate sequentially and continuously, the amount of communication becomes enormous, and the amount of communication increases as the number of measuring devices increases. As a result, communication costs increase.
In order to reduce the amount of communication, there is a method of lengthening the transmission cycle. However, with this method, it is difficult to grasp a transient state that occurs within a few minutes.

By grasping such a short-term change in the measurement amount, it is possible to quickly grasp the bursting and sprinkling of water pipes, which is a sudden event, and a means to improve supply services for general consumers. Can be expected. However, the above-described conventional technology does not consider these points.
On the other hand, it is possible to grasp the total usage amount and the usage amount in a specific area by integrating the measurement amounts of each measuring device. However, as described above, when communication is performed sequentially, the increase in communication cost is a problem. It becomes.

  In view of the above situation, an object of the present invention is to provide a water usage monitoring system that can grasp fluctuations in demand measured by a water usage measuring device and can reduce communication costs.

In order to achieve the above object, a water usage status monitoring system according to the present invention is a water usage status monitoring system that monitors water usage status, and measures the measured value of the flow rate of water measured at a predetermined measurement cycle. A plurality of measurement devices that record the first measurement history in a series in the first storage device, and transmit the untransmitted portion of the first measurement history in a predetermined communication cycle that is longer than the measurement cycle; The measurement value is connected to the measurement device via a wired or wireless network, and the measurement value collected from each measurement device in the communication cycle is recorded in the second storage device as the second measurement history in time series, and the second measurement history is displayed. and a creation water availability monitoring device display data to be displayed on the output device to the measuring device, the change in the measurement value, sudden change is determined whether the change of the measurement value is suddenly changed The first communication device that transmits the measurement value for the untransmitted data to the water usage status monitoring device when the value is equal to or greater than a predetermined value, and the water usage status monitoring device is recorded in the second storage device. A communication cycle evaluation device that changes the communication cycle of the measurement device, a second communication device that sends the changed communication cycle to the corresponding measurement device, for each measurement device from the measurement value information, A sudden change determination value evaluation device that changes the sudden change determination value for each of the measurement devices from the information of the past measurement values recorded in a second storage device, and the communication cycle evaluation device is in an arbitrary period When the total flow rate obtained by summing the measurement values is large, the communication cycle is determined to be small, and when the total flow rate is small, the communication cycle is determined to be large, and of the measurement values in an arbitrary period maximum When the flow rate difference that is the difference between the minimum value and the minimum value is large, the communication cycle is determined to be small, and when the flow rate difference is small, the communication cycle is determined to be large. When the total flow rate is large, the sudden change determination value is determined to be large, and when the total flow rate is small, the sudden change determination value is determined to be small, and when the flow rate difference in a given period is large, the with largely determines the sudden change determination value when the flow rate difference is small, determines reduce the sudden change judgment value, the second communication device, are I sent to the measuring apparatus satisfying the changed the sudden change judgment value .

  ADVANTAGE OF THE INVENTION According to this invention, the fluctuation | variation of the demand amount which the measuring device of water usage measures can be grasped | ascertained, and the water usage condition monitoring system which can reduce communication cost is realizable.

It is a notional block diagram of the water use condition monitoring system of the embodiment concerning the present invention. It is a conceptual diagram which shows the internal structure of the measuring device of embodiment. It is a conceptual diagram which shows the internal structure of the water usage condition monitoring apparatus of embodiment. It is a figure which shows the communication period evaluation table of embodiment. It is a figure which shows the sudden change determination value evaluation table of embodiment. It is the figure which showed the example in case the fluctuation | variation of the instantaneous value of the daily water usage of a measuring device with an embodiment is small. It is the figure which showed the example in case the fluctuation | variation of the instantaneous value of the daily water usage of the measuring device with embodiment is large. It is the figure which showed the example in case there exists a sudden change of the instantaneous value of the daily water consumption of the measuring device with embodiment.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a conceptual configuration diagram of a water usage monitoring system according to an embodiment of the present invention.
In the water usage status monitoring system S of the embodiment, for example, a measuring device (water meter) 3 for measuring the flow rate (water usage) and water pressure of the water supply is installed in the water distribution pipe 1 of the distribution block and the pipe 1j to the customer 2. Has been.

The water usage status monitoring system S includes a network 4 for data transmission of the measuring device 3, a water usage status monitoring device 5 that manages measuring device information and measured values related to each measuring device 3, and a measured value of each measuring device 3. And a monitoring monitor 6 for confirming measurement device information.
The network 4 is a wired or wireless network, and is protected and protected by the Internet or a public line, or a dedicated line is used, but is not particularly limited as long as security can be maintained.

<Measurement device 3>
FIG. 2 is a conceptual diagram showing the internal configuration of the measuring device.
The measuring device 3 installed in the water pipe 1 or the pipe 1j has a measuring unit 39 that measures the flow rate (water usage) and water pressure of the tap water using a flow meter and a pressure gauge.
In addition, the measuring device 3 includes a memory storage device 34 for storing the measurement values measured by the measuring unit 39 as a measurement history 38, and a communication device 32 that communicates with the water usage monitoring device 5 via the network 4. And a communication cycle determination device 33 that determines the communication timing, and a clock device 31 that manages time.

  The measuring device 3 includes various sensors such as a flow meter and a pressure gauge, a control microcomputer, a memory, an amplification circuit for amplifying a detection signal detected by the flow meter and the pressure gauge, and A / D / D / A conversion. Peripheral circuit including a device. Various controls of the measuring device 3 are performed by a control program stored in a memory being executed by a microcomputer.

  In the storage device 34, in addition to the measurement history 38, a measurement cycle 37 (for example, a cycle of 10 minutes / time, 5 minutes / time, etc.) of a cycle in which measurement is performed by the measurement unit 39, This is a reference value for determining whether or not a change over time of the measurement value measured by the communication unit 35 and the measurement unit 39 is a sudden change, which is a cycle for transmitting the accumulated data from the communication device 32 to the water usage monitoring device 5. A certain sudden change judgment value 36 is stored.

The clock device 31 is configured by hardware such as a crystal oscillator and software for acquiring data measured by the crystal oscillator, and the function of managing time is realized by executing a control program.
The communication device 32 includes hardware, communication software, and the like.
The communication cycle determination device 33 is embodied by executing a software control program. Whether the measurement value measured by the measurement unit 39 is more than the sudden change determination value 36 or not, and whether the communication cycle 35 has been reached. Judge whether or not.

  And when the value of the time-dependent change of the measured value is equal to or greater than the sudden change determination value 36, the communication device 32 is used to select the current communication cycle 35 (from the initial time of the current communication cycle 35 to the middle of the current time). ) Is transmitted to the water usage monitoring device 5. On the other hand, when the change with time of the measured value is less than the sudden change determination value 36, the communication cycle determination device 33 determines whether the communication cycle 35 has been reached and uses the communication device 32 at the cycle of the communication cycle 35. Then, one cycle of data accumulated in the current communication cycle 35 is transmitted to the water usage status monitoring device 5.

<Water usage monitoring device 5>
FIG. 3 is a conceptual diagram showing the internal configuration of the water usage monitoring apparatus.
The water usage status monitoring device 5 has a measurement history of a clock device 51 that manages time, a communication device 52 that communicates with the measurement device 3 via the network 4, and measurement values such as flow rate and water pressure received from the measurement device 3. And a storage device 55 for recording as 59.

Further, the water usage status monitoring device 5 includes a communication cycle evaluation device 53 that determines the timing (communication cycle 35) at which each measuring device 3 measures the flow rate and water pressure and sends the accumulated data to the water usage status monitoring device 5; Are provided with a sudden change judgment value evaluation device 54 for judging a sudden change of the display and a display device 60 for creating screen data and transmitting it to the monitor 6.
The water usage status monitoring device 5 is composed of a personal computer (PC), a server, and the like, and functions thereof are executed by executing a program stored in a memory such as an HDD (Hard Disk Drive).

The timepiece device 51 includes hardware such as a crystal oscillator and software for acquiring data measured by the crystal oscillator and the like, and a function for managing time is realized by executing a program.
The communication device 52 includes hardware, communication software, and the like.

The storage device 55 includes a memory such as an HDD and software of a program stored in the memory, and functions such as data recording, updating, and reference are realized by executing the program.
In addition to the measurement history 59, the storage device 55 stores information such as a communication cycle evaluation table 56 for information for determining the communication cycle 35, a sudden change determination value evaluation table 57 for information for determining the sudden change determination value 36, and information on each measurement device 3. The measuring device information table 58 is stored.

<Communication cycle evaluation table 56>
The communication cycle evaluation table 56 is a table in which a communication cycle that is changed according to a change in the measurement value of each measuring device 3 is recorded.
FIG. 4 shows the communication cycle evaluation table 56.
The communication cycle evaluation table 56 is a flow rate difference level 1 to 4 set as a stage obtained by dividing a daily flow rate difference, which is a difference between the maximum value and the minimum value of the daily flow rate, within a certain range, and the daily flow rate. It is expressed as a matrix with daily flow levels 1 to 4 set as a stage in which the daily flow is divided in a certain range.

S11 to S44 shown in FIG. 4 are communication cycles and have the following relationship.
The flow rate difference levels 1 to 4 indicate stages in the range of the magnitude of the flow rate difference, and the magnitude of the range of the flow rate difference increases in this order. That is, the range of the flow rate difference represented by the flow rate difference level has a relationship of level 1 <level 2 <level 3 <level 4.
Moreover, the daily flow level 1-4 shows the step of the range of the magnitude | size of the daily flow, and the magnitude | size of the range of the daily flow becomes large in this order. That is, the daily flow rate range represented by the daily flow rate level has a relationship of level 1 <level 2 <level 3 <level <4. In this case, the communication cycles S11 to S44 are (large) S1m>S2m> S3m. > S4m (small) and (large) Sm1>Sm2>Sm3> Sm4 (small) (m is a natural number of 1 to 4).

That is, when the flow rate difference level is large, a small cycle is set, whereas when the flow rate difference level is small, a large cycle is set. Further, when the daily flow level is large, a small cycle is set, whereas when the daily flow level is small, a large cycle is set.
The communication cycle is uniquely determined by determining whether the daily flow rate is any of the flow rate difference levels 1 to 4 and determining whether the daily flow rate is any of the daily flow levels 1 to 4 from the measurement value measured by the measuring device 3. (Any of communication periods S11 to S44).

<Sudden change judgment value evaluation table 57>
In the sudden change determination value evaluation table 57, sudden change determination values corresponding to the measurement values of the measurement device 3 are recorded as table data in order to provide the sudden change determination value 36 of the measurement device 3.
FIG. 5 shows the sudden change determination value evaluation table 57.
The sudden change judgment value evaluation table 57 includes a flow rate difference level 1 to 4 set as a stage where the daily flow rate is divided within a certain range, and a daily flow level 1 to 4 set as a stage where the daily flow rate is divided within a certain range. Expressed as a matrix.

D11 to D44 shown in FIG. 5 are sudden change determination values.
The size of the range of the flow rate difference increases in the order of the flow rate difference levels 1 to 4, and the size of the range of the daily flow rate increases in the order of the daily flow rate levels 1 to 4. In this case, the sudden change determination values D11 to D44 are (small) D1n <D2n <D3n <D4n (large), (small) Dn1 <Dn2 <Dn3 <Dn4 (large) (n is 1 to 4) Any natural number).
The flow rate difference level 1 to 4 is obtained from the daily flow rate difference from the measurement value measured by the measuring device 3, and the daily flow rate is obtained from any of the daily flow levels 1 to 4, and the sudden change determination value is uniquely determined. (Any of sudden change determination values D11 to D44) is obtained.

  The measurement device information table 58 stores information unique to the measurement device 3. Specifically, in the measurement device information table 58, a management number that is identification information of each measurement device 3, a measurement cycle 37 of a cycle in which the measurement device 3 performs measurement, and measurement value data accumulated in the measurement device 3 are measured. Table data includes a communication cycle 35 of a cycle transmitted from the device 3 to the water usage monitoring device 5, a sudden change determination value 36 of a reference value for determining whether or not a flow rate (amount of water used) measured by the measuring device 3 has changed suddenly, and the like. It is remembered.

  The communication cycle evaluation device 53 determines the timing for measuring the flow rate or the water pressure from the change over time of the measurement value of the flow rate or the water pressure measured by the measurement device 3. It has a function of evaluating whether or not the communication cycle of each measuring device 3 is appropriate using the communication cycle evaluation table 56 having data of the change and the communication cycle corresponding thereto.

The sudden change determination value evaluation device 54 has a function of determining (determining) whether or not the sudden change determination value of each measuring device 3 is appropriate using the sudden change determination value evaluation table 57.
The communication cycle evaluation device 53 and the sudden change determination value evaluation device 54 are software, and each function is realized by executing the program.

<Operation of water usage monitoring system S>
The water usage monitoring system S performs the following operation.
<Operation of measuring device 3>
The measuring unit 39 of the measuring device 3 shown in FIG. 2 measures the flow rate (used water amount) and water pressure of the water distribution pipe 1 and the pipe 1j (see FIG. 1) at the measurement cycle 37 recorded in the storage device 34.

The flow rate and the water pressure, which are the measurement values of the measurement unit 39, are added to the storage device 34 by the time data held at that time by the timepiece device 31, and the measurement time, flow rate and water pressure data (information) are stored in the storage device 34. Recorded in the measurement history 38.
The communication cycle determination device 33 of the measurement device 3 outputs a transmission command to the communication device 32 so as to transmit the measurement history 38 recorded in the storage device 34 in accordance with the communication cycle 35 of the storage device 34. The communication device 32 transmits a measurement history 38 of data of measurement values accumulated during the current communication cycle 35 to the water usage status monitoring device 5 via the network 4.

  For example, when the measurement cycle 37 is 1 minute and the communication cycle 35 is 10 minutes, the measurement unit 39 measures the flow rate and the water pressure at a cycle of 1 minute, and the measurement history 38 is data with a cycle of 1 minute together with time data at the time of measurement. Accumulated as (information). Then, the communication device 32 reads 10 records of the measurement values of the measurement history 38 in the 10 minute cycle, that is, the measurement values of the 1 minute cycle, and collects 10 records through the network 4 (see FIG. 1). To the water usage monitoring device 5.

  In addition, the communication cycle determination device 33 (see FIG. 2) of the measuring device 3 includes the current measurement value recorded in the measurement history 38 and the work area (temporary storage area) and the previous measurement value recorded in the measurement history 38. When the difference between the measured values is equal to or greater than the sudden change determination value 36 of the storage device 34, a transmission command is output to the communication device 32.

For example, when the sudden change determination value 36 is 20 m ³ , the previous one minute water usage recorded in the measurement history 38 is 10 m ³ , and the current one minute water usage is 30 m ³ ,
｜ “Current water usage for 1 minute” − “Previous water usage for 1 minute” | ≧ “Rapid change judgment value 36”
Therefore, the communication device 32 reads the record (information) of the measurement history 38 that has not been transmitted from the start of the current communication cycle 35 to the present time, and stores the record (information) via the network 4 in the water. It transmits to the usage status monitoring device 5.

<Operation of water usage monitoring device 5>
The communication device 52 of the water usage status monitoring device 5 shown in FIG. 3 receives the measurement history 38 (see FIG. 2) transmitted from each measurement device 3 via the network 4. The communication device 52 records the measurement history 38 received based on the time data held by the timepiece device 51 for each measurement device 3 in the corresponding portion of the measurement history 59 of the storage device 55 by the storage device 55.

  In the monitor 6, the display device 60 of the water usage status monitoring device 5 refers to the measurement history 59 and creates and outputs display data of the measurement history 38 of each measurement device 3 stored in the measurement history 59. A measurement history 38 of the measuring device 3 is displayed. The user can visually grasp the measurement history 38 of each measuring device 3 displayed on the monitor 6 and grasp the water usage of each measuring device 3 in time series.

  Further, in the monitor 6, the display device 60 of the water usage status monitoring device 5 creates display data of the measurement cycle 37, the communication cycle 35, and the sudden change determination value 36 of each measurement device 3 with reference to the measurement device information table 58. By outputting, the measurement cycle 37, the communication cycle 35, and the sudden change determination value 36 of each measuring device 3 are displayed.

<Evaluation of the communication cycle 35 of the measuring device 3 of the water usage monitoring device 5>
The communication cycle evaluation device 53 of the water usage status monitoring device 5 normally calculates the daily flow rate difference and the daily flow rate of each measurement device 3 from the measurement history 59 at a preset timing, and the communication cycle evaluation table 56 of FIG. Is used to determine the communication period 35.

  In addition, the user inputs an arbitrary current or past time point to the monitoring monitor 6, calculates the daily flow rate difference and the daily flow rate of each measuring device 3 from the measurement history 59 at the arbitrary time point, and the communication cycle evaluation table 56. The communication cycle 35 can be determined using (see FIG. 4).

  When the determined communication cycle is different from the communication cycle 35 of the measurement device information table 58, the storage device 55 updates and changes the communication cycle 35 of the measurement device information table 58 and measures the communication cycle 35 in the communication device 52. A transmission command is output so as to be transmitted to the device 3. When the communication device 32 of the measuring device 3 in FIG. 2 receives the communication cycle 35, the storage device 34 updates and changes the communication cycle 35 of the storage device 34.

  Further, the user can perform an input operation for changing the setting of the timing at which the communication cycle evaluation device 53 determines the communication cycle 35 from the monitor monitor 6. In this case, the communication cycle evaluation device 53 changes the setting of the timing for determining the communication cycle 35 set as a parameter (variable) in the program source, table, work area (temporary storage area), etc., according to the user's input operation. To do.

Hereinafter, the determination of the communication period 35 (see FIG. 2) of the measuring device 3 will be described with an example.
FIG. 6 shows an example in which the fluctuation of the instantaneous value of the daily water usage of a certain measuring device is small, and FIG. 7 shows an example of the case in which the fluctuation of the instantaneous value of the daily water usage of a certain measuring device 3 is large. . 6 and 7, the horizontal axis represents time, and the vertical axis represents the amount of water used (flow rate).
In FIG. 6, the difference between the upper limit value and the lower limit value of the daily water use amount is small, whereas in FIG. 7, the difference between the upper limit value and the lower limit value of the daily water use amount is large.

  When the communication cycle evaluation device 53 of the water usage monitoring device 5 determines the communication cycle 35 of the measurement device 3 that measures the measurement value (water consumption) in FIG. 6, the daily flow rate difference is small for the measurement device 3 in FIG. Therefore, the communication cycle 35 is set longer from the communication cycle evaluation table 56 (see FIG. 4). For example, in the case of daily flow level 1 in FIG. 4, S11 with a longer communication cycle 35 is set than S41 with a shorter communication cycle 35.

  On the other hand, when the communication cycle evaluation device 53 determines the communication cycle 35 of the measurement device 3 that has measured the measurement value (water consumption) shown in FIG. 7, the communication cycle evaluation table 56 shows the daily flow rate difference for the measurement device shown in FIG. Therefore, set the communication cycle short. For example, in the case of daily flow level 1 in FIG. 4, S41 with a shorter communication cycle 35 is set than S11 with a longer communication cycle 35.

<Evaluation of sudden change judgment value 36 of measuring device 3 of water usage monitoring device 5>
The sudden change judgment value evaluation device 54 of the water use status monitoring device 5 in FIG. 3 normally has a difference between the daily maximum flow rate and the minimum flow rate of each measurement device 3 from the information of the measurement history 59 at a preset timing. The daily flow rate that is the daily flow rate difference and the total daily flow rate (total amount of water used) is calculated. In the sudden change determination value evaluation device 54, the daily flow rate difference is one of the flow rate difference levels 1 to 4 of the sudden change determination value evaluation table 57 in FIG. 5, and the daily flow rate is the sudden change determination value evaluation table 57 in FIG. The daily flow levels 1 to 4 are determined, and it is determined whether the sudden change determination value 36 is any of the sudden change determination values D11 to D44.

In addition, when the user performs an input operation from the monitoring monitor 6, the sudden change determination value evaluation device 54 calculates the daily flow rate difference and the daily flow rate of each measurement device 3 from the measurement history 59 at a desired timing. Using the judgment value evaluation table 57, it is determined whether the sudden change judgment value 36 is set to one of the sudden change judgment values D11 to D44 of FIG.
When the sudden change determination value 36 determined in this way is different from the sudden change determination value 35 of the measurement device information table 59, the sudden change determination value 36 of the measurement device information table 59 is changed, and the sudden change determination value 36 is assigned to the communication device 52. A transmission command is output so as to be transmitted to the measuring device 3.

When the measuring device 3 receives the changed sudden change determination value 36, the storage device 34 updates and changes the sudden change determination value 36.
Further, the user can perform an input operation for changing the setting of the timing at which the sudden change determination value evaluation device 54 determines the sudden change determination value 35 from the monitoring monitor 6. In this case, in accordance with a user input operation, the sudden change determination value evaluation device 54 sets the timing for determining the sudden change determination value 36 set as a parameter (variable) in a program source, a table, a work area (temporary storage area), or the like. To change.

Hereinafter, the determination of the sudden change determination value 36 of the measuring device 3 will be described with an example.
FIG. 8 shows an example where there is a sudden change 70 in the instantaneous value of the daily water usage (daily flow rate) of a certain measuring device 3. The horizontal axis in FIG. 8 is time, and the vertical axis in FIG. 8 is the amount of water used (flow rate).
FIG. 8 shows a case where a sudden change 70 in water usage occurs between 18:00 and 21:00.

  The sudden change determination value 36 of the measurement device 3 is calculated based on the daily flow rate difference and the daily flow rate calculated from the measurement value of the measurement history 59 by the sudden change determination value evaluation device 54 in the water usage status monitoring device 5. It is any one of the flow rate difference levels 1 to 4 in the sudden change determination value evaluation table 57 in FIG. 5, and the daily flow rate is any one of the daily flow levels 1 to 4 in the sudden change determination value evaluation table 57 in FIG. 5, It is appropriately set to any one of the sudden change determination values D11 to D44.

Then, the communication cycle determination device 33 of the measurement device 3 in FIG. 2 determines whether or not the flow rate measured by the measurement unit 39 (for example, the amount of water used in FIG. 8) has changed to a sudden change determination value 36 or more. That is, the current measurement value recorded in the measurement history 38 or the work area (temporary storage area) is compared with the previous measurement value recorded in the measurement history 38, and the difference in the measurement values is determined to be a sudden change in the storage device 34. When the value is 36 or more (for example, when the sudden change 70 in FIG. 8 is the sudden change determination value 36 or more), it is determined that the water usage has suddenly changed, and a transmission command is output to the communication device 32.
Thus, when there is a sudden change in the amount of water used (flow rate), the measurement history 38 can be appropriately transmitted to the water usage status monitoring device 5. On the other hand, when the difference between the measured values is less than the sudden change determination value 36 of the storage device 34, it is determined that the water usage does not change suddenly.

In addition, when the operator (user) inputs the communication cycle 35 or / and the sudden change determination value 36 of the measurement device information table 58 (see FIG. 3) on the monitor 6, the storage device 55 stores the communication cycle of the measurement device information table 58. 35 or / and the sudden change judgment value 36 is rewritten. Then, the storage device 55 determines whether or not there is a change in the communication cycle 35 and / or the sudden change determination value 36 that is already set in the measurement device information table 58. The communication cycle 35 or / and the sudden change determination value 36 are transmitted from the communication device 52.
As described above, the operator (user) can arbitrarily change the communication cycle 35 and the sudden change determination value 36 of each measuring device 3.

  Further, the operator (user) displays the communication cycle determination table 56 of FIG. 4 on the monitor monitor 6, and each flow rate difference range of the flow rate difference levels 1 to 4 and / or each of the daily flow rate levels 1 to 4. When the daily flow range or / and the communication cycles S11 to S44 are rewritten and input, the storage device 55 updates and changes the data in the communication cycle determination table 56.

Similarly, the operator (user) displays the sudden change determination value evaluation table 57 of FIG. 5 on the monitor monitor 6, and each flow rate difference range of the flow rate difference levels 1 to 4 or / and the daily flow rate levels 1 to 4. When the daily flow range or / and sudden change determination values D11 to D44 are rewritten and input, the storage device 55 updates and changes the data of the sudden change determination value evaluation table 57.
In this way, the operator (user) can arbitrarily change the setting information in the communication cycle determination table 56 and the sudden change determination value evaluation table 57.

In summary, as shown in FIG. 1, the water usage status monitoring system S measures the usage status of water (flow rate and water pressure) and communicates with the measuring device 3 that records the measured value and each measuring device 3. A water usage monitoring device 5 that collects and stores measured values of flow rate and water pressure is provided.
2 includes a measurement unit 39 that performs measurement, a storage device 34 that stores the measured value as a measurement history 38, a communication device 32 that transmits the measurement value to the water usage status monitoring device 5, and a communication period 35. And a communication cycle determination device 33 for determining the above.
The measurement unit 39 performs measurement according to the measurement cycle 37 stored in the storage device 34.

  In addition, the communication cycle determination device 33 determines that the communication timing is in accordance with the communication cycle 35 stored in the storage device 34, and the communication timing is determined from the measurement history 38 and the sudden change determination value 36 stored in the storage device 34. If the communication timing is determined, the communication device 32 is instructed to transmit.

  3 uses a communication cycle evaluation device 53 that determines a communication cycle 35 from a history of measurement values of each measurement device 3, and a sudden change determination value 36 that the measurement device 3 determines a sudden change in the measurement value. A sudden change determination value evaluation device 54 to be determined, a communication period evaluation device 53, and a communication device 52 that communicates according to the evaluation results of the sudden change determination value evaluation device 54 are provided.

Further, the communication cycle evaluation device 53 calculates a fluctuation range for a certain period based on the measurement history 38 of each measurement device 3, and corresponds to the fluctuation range according to the communication cycle evaluation table 56 (see FIG. 4) of the storage device 55 (correspondence). The communication cycle 35 is acquired, and the communication device 52 transmits the corresponding communication cycle 35 to the measurement device 3.
The sudden change determination value evaluation device 54 calculates a fluctuation range for a certain period based on the measurement history 59 of each measurement device 3, and corresponds to the fluctuation range according to the sudden change determination value evaluation table 57 (see FIG. 5) of the storage device 55 (see FIG. 5). The communication device 52 transmits the corresponding sudden change determination value 36 to the measuring device 3.

  According to the above configuration, when collecting and monitoring data from a plurality of measuring devices 3, the importance is determined from the measurement history 59 for each measuring device 3, and the communication period 35 is controlled to control the water of each measuring device 3. The amount used can be grasped. Specifically, the water usage monitoring system S acquires each measurement information from a water meter (measurement device 3) installed in various places in a wide area, compares it with the recorded past measurement information, For a meter (measurement device 3) that changes drastically or in a meter (measurement device 3) whose measurement information changes suddenly, the communication cycle 35 is made efficient by shortening the communication cycle 35 for acquiring the measurement information. Change. Thereby, communication frequency is suppressed and communication cost is suppressed.

That is, in the meter (measurement device 3) with little change in the situation, the communication cost is reduced by suppressing the communication frequency.
Therefore, the suitable water usage monitoring system S which can suppress the increase in communication cost by determining the importance for every measuring device (measuring device 3) and controlling communication volume is realizable.

<< Other Embodiments >>
In the above-described embodiment, the case where the communication device 32 receives data in the measurement device 3 and the case where the storage device 34 performs the write update are exemplified. However, the communication device 32 may perform the write update. Similarly, in the above-described embodiment, the case where data is received by the communication device 52 in the water usage monitoring device 5 and the case where the write update is performed by the storage device 55 is exemplified. It is good.

In the communication cycle evaluation table 56 of FIG. 4 in the above embodiment, the case of using the daily flow rate difference and the daily flow rate is exemplified, but the flow rate difference and flow rate in units of several days other than the daily unit may be used. When it is considered that it is included, a flow rate difference and a flow rate in units of one week or 10 days may be used, and the evaluation period can be arbitrarily selected.
In this case, a period in which the user determines the communication period 35 with a plurality of communication cycle evaluation tables 56 similar to those in FIG. 4 for flow rate differences and flow rates in arbitrary periods such as several days, one week, or 10 days. May be selected from a plurality of communication cycle evaluation tables 56.

  The communication cycle evaluation table 56 in FIG. 4 illustrates the case where the flow rate difference level and the daily flow rate level are divided into four stages, but the flow difference level and the daily flow level are set to any number of stages other than the four stages. Alternatively, the number of steps of the flow rate difference level and the number of steps of the daily flow level may be any number of steps different from each other.

  Similarly, in the sudden change determination value evaluation table 57 of FIG. 5, the case where the daily flow rate difference and the daily flow rate are used is exemplified, but the flow rate difference and flow rate in units of several days other than the daily unit may be used, and an error is included. May be a flow rate difference and a flow rate in units of one week or 10 days, and the evaluation period can be arbitrarily selected.

  In this case, the configuration is such that a plurality of sudden change judgment value evaluation tables 57 similar to those in FIG. 5 of the flow rate difference and flow rate in arbitrary periods such as several days, one week, or 10 days are provided, and the user determines the sudden change judgment value 36. The period to be selected may be selected from a plurality of sudden change determination value evaluation tables 57.

  Further, the sudden change judgment value evaluation table 57 of FIG. 5 illustrates the case where the flow rate difference level and the daily flow rate level are divided into four stages, but the flow rate difference level and the daily flow level are any number of stages other than the four stages. Alternatively, the number of steps of the flow rate difference level and the number of steps of the daily flow level may be any number of steps different from each other.

  In addition, although the water supply was illustrated and demonstrated in the said embodiment, of course, it will not specifically limit if this invention is applicable.

  While various embodiments of the present invention have been described above, the description is intended to be exemplary. Accordingly, various modifications and changes can be made within the scope of the present invention. That is, the present invention can be arbitrarily changed as appropriate without departing from the spirit of the invention.

3 Measuring device 4 Network 5 Water usage monitoring device 6 Monitoring monitor (input / output device)
32 Communication device (first communication device)
34 First storage device (storage device)
35 Communication cycle 36 Sudden change judgment value 37 Measurement cycle 38 Measurement history (first measurement history)
52 Communication device (second communication device)
53 Communication cycle evaluation device 54 Sudden change judgment value evaluation device 55 Storage device (second storage device, setting change device)
59 Measurement history (second measurement history)
60 Display device S Water usage monitoring system

Claims (2)

A water usage monitoring system for monitoring water usage,
The measured value of the flow rate of water measured at a predetermined measurement cycle is recorded in the first storage device as a first measurement history in time series, and the untransmitted portion of the first measurement history is recorded at a cycle longer than the measurement cycle. A plurality of measuring devices that transmit at a predetermined communication cycle;
Each measurement device is connected to each measurement device via a wired or wireless network, and the measurement values collected from each measurement device in the communication cycle are recorded in a second storage history as a second measurement history in the second storage device, and the second measurement history A water usage monitoring device that creates display data to be displayed on the input / output device .
The measurement device, when the change in the measurement value is equal to or greater than a sudden change determination value for determining whether or not the change in the measurement value has changed suddenly, the measurement value for untransmitted to the water usage status monitoring device. A first communication device for transmitting,
The water usage monitoring device is:
The communication cycle evaluation device that changes the communication cycle of the measurement device for each measurement device from the information of the past measurement values recorded in the second storage device, and the measurement that corresponds to the changed communication cycle A second communication device to be sent to the device, and a sudden change determination value evaluation device that changes the sudden change determination value for each measurement device from the information of the past measurement values recorded in the second storage device,
The communication cycle evaluation device
When the total flow rate obtained by summing up the measured values in an arbitrary period is large, the communication cycle is determined to be small, and when the total flow rate is small, the communication cycle is determined to be large, and the measurement in an arbitrary period is determined. When the flow rate difference that is the difference between the maximum value and the minimum value among the values is large, the communication cycle is determined to be small, and when the flow rate difference is small, the communication cycle is determined to be large,
The sudden change judgment value evaluation device
When the total flow rate in an arbitrary period is large, the sudden change determination value is determined to be large, and when the total flow rate is small, the sudden change determination value is determined to be small, and the flow rate difference in an arbitrary period is large In the case where the sudden change determination value is largely determined and the flow rate difference is small, the sudden change determination value is determined to be small,
The second communication device is
A water usage status monitoring system , wherein the changed sudden change determination value is sent to the corresponding measuring device . In the water use condition monitoring system according to claim 1 ,
The water usage monitoring device is:
Displaying the communication period and the sudden change determination value on the input / output device; and
A water usage status monitoring system comprising: a setting change device that changes the communication cycle and the sudden change determination value by setting by input to the input / output device.

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