FR3119017A1 - METHOD FOR MEASURING THE CONSUMPTION OF A FLUID AND ASSOCIATED CONSUMPTION MEASURING DEVICE. - Google Patents

Abstract

The invention relates to a method for measuring the consumption of a fluid, the method being carried out in a consumption meter of a fluid and comprising: - determining (S2) first consumptions of the fluid at a temperature measured and classified among predetermined temperature ranges during a reference period, - determining (S2) a total consumption of the fluid during the reference period, - determining (S3) a condition of consumption of the fluid from a subset of said first consumptions, of a consumption threshold determined from said total consumption, and/or of a predefined volume of fluid, and, - if said consumption condition is fulfilled (S4), emitting an alert message ( S5). Figure to be published with abstract: Fig. 2

Description

METHOD FOR MEASURING THE CONSUMPTION OF A FLUID AND ASSOCIATED CONSUMPTION MEASURING DEVICE.

The present invention relates to the field of the controlled distribution of fluids. The invention relates more particularly to the control of water distribution according to the temperature of the water consumed, by means of an improved consumption meter.

STATE OF THE PRIOR ART

The meters conventionally used to measure a volume of fluid dispensed are configured to provide information on the volume of fluid dispensed in the form of an index. Thus, for example, a water meter provides a value representative of the volume of water distributed through this meter since the meter was reset. Old meters are simply mechanical and the circulation of a fluid operates a setting in motion of a mechanism, so that the index presented is representative of the volume of fluid distributed. Other more recent meters are said to be smart and include electronic circuits, in particular for the purpose of communicating consumption index information to one or more remote devices provided to manage this information, for example with a view to carrying out billing. More sophisticated fluid dispense meters further include means to measure the temperature of the dispensed fluid, but the temperature of the dispensed fluid is not actually managed, which can cause a number of problems. Thus, in addition to the risks for the distribution linked to the freezing of the installations, there are risks of supplying a fluid at a temperature below the expected temperature. For example, in the case of a supply of hot water from a collective boiler to individual rooms, the rooms farthest from the collective boiler will be supplied with hot water at a temperature lower than that of the water distributed in rooms closer to this boiler, due to heat losses in the distribution installations. Finally, there are also risks of excessively high temperature, such as the risk of burns or the risk of lime deposit, favored by high temperature. The situation can therefore be improved.

The object of the invention is to propose a process for distributing a fluid taking into account the temperature measured at the point of delivery of an installation consuming the fluid, as well as variations in the temperature of the fluid distributed, in order to overcome the minus some of the disadvantages of the prior art.

To this end, a method is proposed for measuring the consumption of a fluid, this method being executed in a fluid consumption meter and comprising steps for:

- determine the first consumptions of the fluid at a temperature measured and classified among predetermined temperature ranges during a reference period,

- determine a total consumption of the fluid during the reference period,

- determining a fluid consumption condition from a subset of said first consumptions, from a consumption threshold determined from said total consumption, and possibly from a predefined volume of fluid, and,

- if said consumption condition is met, or if said condition is not met, send an alert message.

Advantageously, it is thus possible to determine quantities consumed for each of the temperature ranges during a reference period, such as, for example, one day, and to check whether certain specific conditions of use are fulfilled (or in other terms are satisfied) or not.

Thus, it is for example possible to detect that a consumption installation of the residential housing type is supplied with hot water having a temperature that is too low for common domestic uses if the fluid distributed is hot water. In the same way, it is possible to detect that a dwelling is supplied with hot water at too high a temperature, which consequently increases a significant risk of burns. If the fluid is cold water, it is for example possible to determine that most of the cold water delivered to a dwelling is close to 0°C, and that the risk of an interruption of a supply of cold water, due to “extreme cold” weather conditions, is important.

The method according to the invention may also include the following characteristics, considered alone or in combination:

• Said first fluid consumptions are divided into second fluid consumptions respectively carried out during predefined time slots of the reference period, and in which said determined fluid consumption condition also depends on one or more of said second consumptions.

Advantageously, it is thus possible to know the distribution of fluid consumption both by temperature ranges and by time ranges, which makes it possible to deduce specific uses of consumption of a fluid with respect to instants of a reference period and to be able to check whether these uses then appear normal.

• The alert message is sent to a remote installation supplying the fluid and includes an instruction to increase or decrease the temperature of the fluid.

Thus, it is advantageously possible to send alert messages, in particular with a view to controlling a remote supply installation. For example, if hot water is delivered at too low a temperature in a dwelling remote from the supply installation, the alert message can include an instruction for controlling the water supply installation to raise or lower the temperature of the supplied water.

• The alert message is sent to a remote server of a maintenance service provider, or of personal assistance services.

It is thus advantageously possible to be able to provide assistance to vulnerable people, such as people identified as being dependent, after detection of a likely abnormal or unusual use, in terms of water consumption.

The invention also relates to a device of the fluid consumption meter type comprising a set of electronic circuits configured among which:

- a module configured to measure the first consumptions of the fluid at a temperature measured and classified among predetermined temperature ranges during a reference period, and for determining a total consumption of the fluid during this reference period,

- a module configured for determining a fluid consumption condition from a subset of said first consumptions, from a consumption threshold determined from said total consumption, and/or from a volume of fluid predefined,

- a module configured to send an alert message if said consumption condition is met, or even sometimes if said condition is not met.

According to one embodiment, the device of the fluid consumption meter type according to the invention is a water meter.

The invention also relates to a system for supplying a fluid arranged for a supply of fluid from a fluid supply installation to a fluid consumption installation, the system comprising at least one fluid dispensing meter as previously described.

Finally, the subject of the invention is a computer program product comprising program code instructions for executing the steps of the aforementioned method, when the program is executed by a processor, as well as an information storage support device comprising such a computer program product.

The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of at least one embodiment, said description being made in relation to the attached drawings, among which:

schematically illustrates a system for supplying fluids from supply facilities to consumption facilities;

is a flowchart representing a method of measuring the consumption of a fluid executed in a fluid consumption meter of the installation already shown in the , according to one embodiment;

is a flowchart representing a first variant of the embodiment of the method already represented on the ;

is a flowchart representing a second variant of the embodiment of the method already shown in the ;

is a flowchart representing a third variant of the embodiment of the method already represented on the ;

is a flowchart representing a fourth variant of the embodiment of the method already shown in the ; And,

is a diagram representing the architecture of a fluid consumption meter configured to execute a method described in one of the figures , , , And .

DETAILED DESCRIPTION OF EMBODIMENTS

There schematically illustrates a system 100 for supplying fluids from a supply installation 10, 12 to several consumption installations 1, 2 of the fluid.

According to one embodiment, the fluids dispensed are water. The supply system 100 makes it possible to supply so-called "cold" water from a supply installation 10 and so-called "hot" water from a supply installation 12, to installations 1 and 2 say water "consumption facilities". According to one embodiment, the consumption installations 1 and 2 are residential accommodation arranged for the daily life of the occupants. Cold water is then defined by a temperature between 0°C and approximately 35°C. Hot water is then defined by a temperature between 0° and approximately 70°C. The supply of cold water from the supply installation 10 is carried out thanks to and through a network 11 of cold water distribution. The supply of hot water from the supply installation 12 is carried out thanks to and through a network 13 of hot water distribution. It can be considered that these distribution networks 11 and 13 form an integral part of the water supply installation. The consumption installation 1 is connected to the cold water distribution network 11 via a meter device 111 for cold water consumption. The consumption installation 1 is also connected to the hot water distribution network 13 via a meter device 131 for hot water consumption.

The consumption installation 2 is connected to the cold water distribution network 11 via a meter device 112 for cold water consumption. The consumption installation 2 is also connected to the hot water distribution network 13 via a meter device 132 for hot water consumption.

According to one embodiment, the cold water consumption meters 111 and 112 are arranged to operate nominally at relatively low fluid temperatures, for example up to 55° C., and the water consumption meters 131 and 132 hot are arranged to operate nominally at higher fluid temperatures, for example up to 90° C., or even 130° C. Such a disparity makes it possible in particular to reduce the cost of production of cold water meters.

Advantageously, the water consumption meters 111, 112, 131 and 132 are identical and all arranged to operate nominally in the same range of fluid temperatures, such as for example between 0° C. and 130° C., which makes it possible to harmonize the equipment in the facilities.

In the present description, the names "distribution meter" or "consumption meter" or even "consumption measurement meter" of a fluid, such as, for example, water, are used interchangeably, any device configured to measure the consumption of a fluid supplied to an installation for the consumption of this fluid, such as a dwelling for residential use, for example.

There illustrates a method of measuring the consumption of a fluid in a fluid consumption meter such as, for example, one of the meters 111, 131, 112 and 132 of the fluid supply system 100 arranged for a supply cold water and hot water. According to the example described, the meter is arranged for a supply of hot water or else for a supply of cold water. An initial step S1 corresponds to the end of commissioning of the system 100 for supplying a fluid arranged for supplying cold water and hot water. At this stage, the water supply installations 10 and 12 are normally operational, as well as the consumption installations, and the meter in which the method is carried out. The meter carrying out the method comprises a set of mechanical, electromechanical, electrical and electronic elements for operating a measurement of the quantity of water delivered over time and for measuring and recording the temperature of the water consumed. The water consumption meter executing the method comprises in particular a transducer configured to generate information representative of the temperature of the water which circulates inside the meter, with a view to the distribution of the water. The meter also comprises a clock circuit making it possible to know the precise date and time, which is configured to timestamp each of the consumption measurements made by the meter. According to one embodiment of the invention, the clock circuit is configured for precision to the minute. According to a variant, the counter is configured for an accuracy of the order of a second. All these elements are normally operational at the end of the initial step S1.

First consumptions of the fluid at a temperature measured and classified among predetermined temperature ranges are determined during a reference period during a step S2. According to one embodiment of the invention, the reference period is a day, extending for example from 0h and until 0h the next day.

According to the preferred embodiment, the predefined temperature ranges are respectively 0°C to 5°C; above 5°C and up to 15°C; above 15°C and up to 25°C; above 25°C and up to 35°C; and above 35°C, when the meter is installed on a cold water distribution network, and the predefined temperature ranges are 0°C to 25°C; above 25°C and up to 35°C; above 35°C and up to 50°C; above 50°C and up to 70°C; and above 70°C, when the meter is installed on a hot water distribution network. Thus, at the end of step S2, the meter has first information representative of the water consumption for each of the aforementioned temperature ranges. In other words, this first information represents consumption by temperature ranges, determined for each of the temperature ranges by comparing an index at the start of the reference period and an index at the end of the reference period, or more exactly by subtracting the start of period index from the end of period index. In addition, at the end of step S2, a total consumption of the fluid during the reference period is determined, by adding all of the first consumptions determined for each of the temperature ranges. In the rest of the description, a consumption ΔA-B designates a first consumption of water having a measured temperature being higher than the temperature A and being less than or equal to the temperature B. Thus, for example, Δ5-15 designates a consumption of water at a measured temperature between 5°C and 15°C during the reference period of one day, and Δ15-25 denotes water consumption at a measured temperature between 15°C and 25°C at during the same one-day reference period. Similarly, Δ>70 designates a daily consumption of water at a temperature measured at more than 70°C.

At this stage, total daily consumption information Δtot is available in a memory of the consumption meter executing the method and it is then possible to determine, during a step S3, a water consumption condition from in particular this total daily consumption Δtot, and a subset of daily water consumption, represented by the first information determined during the reference period.

For example, it is possible to determine the condition:

Δ50-70 + Δ>70 >= Δtotal / 2

Literally, the condition thus determined can be expressed by "the sum of the daily water consumption at a temperature measured in the range of temperatures above 50°C and up to 70°C and the daily water consumption at a temperature measured in the range of temperatures above 70°C, is equal to or exceeds half of the total daily consumption ”. Thus, if this condition is met, it is possible to deduce that the majority of the water consumed has a temperature above 50°C, at the level of the water consumption meter, and therefore that the water is supplied too hot. In this case, for example, an alert message is sent by the meter to the hot water supply installation for the purpose of reducing the temperature of the hot water delivered by the supply installation. For example, the meter 132 of the water supply system 100 can thus control the temperature of the hot water supply installation 12 to reduce the temperature of the hot water delivered to the consumption installations by 5° C. 1 and 2.

A consumption condition thus determined can also include a term corresponding to a predefined volume of fluid, and therefore, according to the example described, a predefined volume of water. By way of example, a consumption condition thus determined could be Δ50-70 > 40L, which consumption condition can be expressed literally by " the daily consumption of water at a temperature measured in the range of temperatures above 50°C and up to 70°C is greater than 40 litres” .

Advantageously, a consumption condition thus determined can include a term relating to a subset of the daily consumptions by measured water temperature ranges, to the total daily consumption Δtot, and to a predefined volume of water, or even to a subset of daily consumption by measured water temperature ranges and at a predefined volume of water only. More generally, any combination of terms depending on these elements can be used to determine a consumption condition to be verified. It is thus possible to determine a multitude of consumption conditions that are different from each other and each corresponding to a use or a situation whose detection is of interest, in particular to initiate a maintenance or assistance action for people. For example, different conditions C1, C2, C3 and C4 can be determined, which each correspond to a particular situation. The consumption condition thus determined in step S3 is then verified during a step S4 of the method executed in the water consumption meter. The condition is most often determined so that, if it is met, or in other words if it is verified or even satisfied, this corresponds to a detection of an event of interest or an unusual or undesirable use. in terms of consumption and a sending of an alert message is then operated by the meter executing the method, during a step S5. The alert message can be sent via a wired link or, preferably, via a short or long distance wireless link. According to one embodiment, the alert message is sent to a remote server of a maintenance service provider or a personal assistance service provider, or even directly to a device for controlling the installation of fluid supply, such as, for example, a water temperature control unit of a hot water supply installation. Such an installation is, for example, a collective boiler for the supply of hot water to a set of residential dwellings in a city or a district of a city. The alert message is advantageously associated with the type of consumption condition determined during step S3. For example, if the determined consumption condition aims to identify a risk of freezing, the alert message is sent to a server of a maintenance provider authorized to configure or modify the fluid supply installation to mitigate this risk. . According to another example, if the determined condition relates to the monitoring of vulnerable people, because they are dependent, in a residential dwelling supplied with water, and more particularly the detection of abnormal constant consumption or of an absence of consumption, for example , the alert message will be sent to a remote server of a personal assistance provider who can take charge of the organization of an intervention at home, help or rescue. The alert message may include one or more control information from one or more remote elements for the purpose of reconfiguring the water supply system 100. For example, the control information may be such as to configure the temperature of the water or even to adjust its pressure. The alert message can be repeated at regular time intervals until the meter executing the method detects a change in the water supply conditions or even receives an acknowledgment indicating that the message has been received, or although receipt of the message is or will be followed by human intervention or automated intervention by a water supply configuration system.

According to one embodiment, sequences of steps S3, S4, S5 can follow one another temporally so as to determine and verify several consumption conditions sequentially and send as many alert and/or control messages as necessary.

According to one embodiment of the invention, the first fluid consumptions determined in step S2 are further divided into second fluid consumptions respectively carried out during predefined time slots of the reference period, thanks to the timestamping system of the consumption measurements of the meter executing the process. Advantageously, it is thus possible to know the distribution of fluid consumption both by temperature ranges and by time ranges, which makes it possible to determine a consumption condition that also depends on one or more of said second consumptions and on to deduce consumption uses of a fluid such as water, and to be able to check from this fact whether these uses appear normal with regard to consumption by time ranges, in addition to consumption by temperature ranges.

According to one embodiment, the predefined time slots in the reference period of a day are of equal duration of 3 hours and are 0h to 3h; 3 a.m. to 6 a.m.; 6 a.m. to 9 a.m.; 9 a.m. to 12 p.m.; 12 p.m. to 3 p.m.; 3 p.m. to 6 p.m.; 6 p.m. to 9 p.m. and 9 p.m. to midnight (or at midnight the next day)

According to one embodiment, the consumption condition determined in step S3 and verified in step S4 uses one or more consumptions by temperature ranges and does not use consumption by time ranges. According to another embodiment, the consumption condition uses one or more consumptions by time ranges and does not use consumption by temperature ranges. According to yet another embodiment, the consumption condition uses one or more consumptions by temperature ranges and one or more consumption conditions by time ranges. According to each of these embodiments, several sequences of steps S3, S4 and S5 can be executed sequentially or in parallel and applied to the daily consumptions thus determined to detect events of interest defined in connection with the measured consumptions.

There illustrates a method of measuring water consumption in the water supply system 100, similar to that shown in the , and in which the condition determined in step S3 is a condition C1 defined such that:

Δ0-5 >= Δtotal / 4

The consumption condition thus defined in a meter connected to a cold water supply network, such as meter 111 or meter 112, aims to detect that the water is very often very cold and that there is a risk of water freeze in counter.

In this process, steps S1 and S2 remain unchanged from the process described in relation to the , and step S4 verifies the consumption condition C1 in a manner similar to what is operated according to the method illustrated in the The message sent to step S5 then includes information aimed at preventing the risk of the water freezing in the cold water meter.

There illustrates a method of measuring water consumption in the water supply system 100, similar to that shown in the , and wherein the condition determined in step S3 is a condition C2 defined such that:

(Δtot > 80L) AND (min (Δtot by time slots) / Δtot < 0.1)

The consumption condition thus defined in a meter connected to a cold water supply network, such as meter 111 or meter 112, aims to detect that there has been significant daily consumption on the one hand and that the the lowest consumption of all the consumptions determined by time slots is less than 10% of the total daily consumption Δtot. This eliminates the possibility of daily consumption due to a leak. A leak is to be interpreted here as a real leak or as a water withdrawal point (water distribution) accidentally left open inside the dwelling, the consumption of which is measured by the meter performing the process.

In this process, steps S1 and S2 remain unchanged from the process described in relation to the and step S4 verifies the consumption condition C2 similarly to what is operated according to the method illustrated in the The alert message sent at step S5 includes information intended to indicate that the occupant(s) of the dwelling are probably in good health. According to one embodiment, in the event that the condition C2 is not verified, a warning message to the contrary is sent, aimed at indicating that the occupants are probably absent or that there is probably a problem concerning an occupant, in particular if the occupant is identified as being vulnerable and/or dependent by a personal assistance assistance service, coupled to the water supply system 100 .

There illustrates a method of measuring water consumption in the water supply system 100, similar to that shown in the , and wherein the condition determined in step S3 is a condition C3 defined such that:

Δ35-50 + Δ50-70 + Δ>70 < Δtotal / 10

The consumption condition thus defined in a meter connected to a hot water supply network, such as meter 131 or meter 132, aims to detect that the hot water consumed at a temperature measured above 35°C represents less than 10% of the total daily consumption Δtot. It is therefore possible to deduce that the hot water is not hot enough when its temperature is measured in the meter performing the process.

In this process, steps S1 and S2 remain unchanged from the process described in relation to the and step S4 verifies the consumption condition C3 similarly to what is operated according to the method illustrated in the . The alert message sent at step S5 then includes control information aimed at increasing the temperature of the hot water delivered by the supply installation 12 of the water supply system 100 . Otherwise, that is to say when the condition C3 is not fulfilled, it is possible to operate a new sequence of steps S3, S4 and S5, aimed at verifying whether the water is not not too hot, as already detailed in the part of this description relating to the .

There illustrates a method of measuring water consumption in the water supply system 100, similar to that shown in the , and wherein the condition determined in step S3 is a condition C4 defined such that:

(Δtot > 50L) AND (min (Δtot by time slots) / Δtot < 0.1)

The consumption condition thus defined in a meter connected to a hot water supply network, such as meter 131 or meter 132, aims to detect that there has been significant daily consumption on the one hand and that the the lowest consumption of all the consumptions determined by time slots is less than 10% of the total daily consumption. This eliminates the possibility of daily consumption due to a leak. A leak is also to be interpreted here as a real leak or a water withdrawal point (water distribution) accidentally left open inside the dwelling, the consumption of which is measured by the meter performing the process.

In this process, steps S1 and S2 remain unchanged from the process described in relation to the and step S4 verifies the consumption condition C4 similarly to what is operated according to the method illustrated in the . The alert message sent at step S5 includes information intended to indicate that the occupant(s) of the dwelling are probably in good health. According to one embodiment, in the event that the condition C4 is not verified, a warning message to the contrary is sent, aimed at indicating that the occupants are probably absent or that there is probably a problem concerning an occupant, in particular if the occupant is identified as being vulnerable and/or dependent by a personal assistance assistance service, coupled to the water supply system 100 . This process is therefore substantially similar to that illustrated in connection with the but suitable for a meter operating on a hot water supply network.

There schematically illustrates an example of the internal architecture of a device for measuring the consumption of a fluid (consumption meter) used for measuring the consumption of cold water or hot water, and still commonly called a water meter "intelligent", in particular because of its ability to process information and communicate with remote equipment. The architecture represented is that of a consumption meter among the meters 111, 112, 131 and 132 of the water supply system 100 represented on the . Let us consider as an example that the architecture represented on the is that of water meter 132.

According to the hardware architecture example shown in , the water consumption counter device 132 then comprises, connected by a communication bus 1320: a processor or CPU (Central Processing Unit) 1321; a random access memory RAM (Random Access Memory) 1322; a read-only memory ROM 1323; a storage unit such as a hard disk (or a storage medium reader, such as an SD ("Secure Digital" in English) card reader 1324; at least one communication interface 1325 enabling the consumption meter device water 132 to communicate with remote devices such as servers from third-party service providers or even such as equipment for controlling the water supply installation 10, 12.

Processor 1321 is capable of executing instructions loaded into RAM 1322 from ROM 1323, external memory (not shown), storage media (such as an SD card), or a communications network. When power meter device 132 is powered up, processor 1321 is able to read instructions from RAM 1322 and execute them. These instructions form a computer program causing processor 1321 to perform part of a process described in connection with the , , , And .

All or part of the method implemented by the consumption meter 132, or its variants described, can be implemented in software form by executing a set of instructions by a programmable machine, for example a DSP (Digital Signal Processor) or a microcontroller, or be implemented in hardware form by a dedicated machine or component, for example an FPGA (Field-Programmable Gate Array) or an ASIC (Application-Specific Integrated Circuit). In general, the water consumption meter 132 comprises electronic circuitry configured to implement the method described in relation to itself as well as to remote third-party servers, and with any other device involved in the execution of the consumption measurement method described. Obviously, the consumption meter 132 also includes all the elements usually present in a system comprising a control unit and its peripherals, such as a power supply circuit, a power supply supervision circuit, one or more power supply circuits. clock, a reset circuit, input-output ports, interrupt inputs, bus drivers, as well as the circuits and sensor(s) useful for measuring the temperature of the water consumed. This list is not exhaustive.

The invention is not limited only to the embodiments described but relates more broadly to any method for measuring the consumption of a fluid, executed in a consumption meter of said fluid and comprising steps for determining first consumptions of the fluid at a temperature measured and classified among predetermined temperature ranges during a reference period; determining a total consumption of the fluid during the reference period; determining a fluid consumption condition from a subset of the first consumptions, from a consumption threshold determined from said total consumption, and/or from a predefined volume of fluid; and, if the predetermined consumption condition is met, transmitting a control or alert message. According to variants of the embodiments described, the predefined temperature ranges can be smaller ranges, such as for example temperature ranges of 5° C. and the predefined time ranges can be smaller time ranges, such as for example 5 minute time slots.

According to other embodiments, the system for supplying a fluid described can supply a fluid other than water, for example an industrial fluid, and the consumer installations described are industrial installations comprising industrial equipment and occupants. operators of this equipment.

Claims (10)

Method of measuring the consumption of a fluid, the method being carried out in a consumption meter of a fluid and being characterized in that it comprises:

• determining (S2) the first consumptions of the fluid at a temperature measured and classified among predetermined temperature ranges during a reference period,
• determining (S2) a total consumption of the fluid during the reference period,
• determining (S3) a fluid consumption condition from a subset of said first consumptions, from a consumption threshold determined from said total consumption, and/or from a predefined volume of fluid,
• if said consumption condition is met (S4), transmitting an alert message (S5).

Method for measuring the consumption of a fluid according to claim 1, in which the said first consumptions of the fluid are divided into second consumptions (S2) of the fluid respectively carried out during predefined time slots of the reference period and in which the said condition of fluid consumption also depends on one or more of said second consumptions. Method for measuring the consumption of a fluid according to one of Claims 1 or 2, in which the alert message is addressed (S5) to a remote installation for supplying the fluid and comprises an instruction for increasing or decreasing the the fluid temperature. Method for measuring the consumption of a fluid according to one of Claims 1 or 2, in which the alert message is sent (S5) to a remote server of a provider of maintenance services or assistance services to people. Fluid consumption counter device (132) characterized in that it comprises:

• a module configured to measure first consumptions of the fluid at a temperature measured and classified among predetermined temperature ranges during a reference period and for determining a total consumption of the fluid during the reference period,
• a module configured for a determination of a fluid consumption condition from a subset of said first consumptions, from a consumption threshold determined from said total consumption, and/or from a predefined volume of fluid ,
• a module configured to send an alert message if said consumption condition is met.

Counter device (111, 131, 112, 132) for the consumption of a fluid according to the preceding claim, the counter device further comprising a module configured to distribute said first consumptions of the fluid into second consumptions of the fluid respectively carried out during predefined time slots of the reference period and wherein said module configured to determine said fluid consumption condition is configured to determine a consumption condition further dependent on one or more of said second consumptions. Meter device (111, 131, 112, 132) for the consumption of a fluid according to one of Claims 5 and 6, the meter device being a water meter. System (100) for supplying a fluid from a fluid supply installation (10, 12, 11, 13) to a fluid consumption installation (1, 2), the system (100) comprising at least a counter (111, 131, 112, 132) according to any one of claims 5 to 7. Computer program product characterized in that it comprises program code instructions for executing the steps of the method according to any one of claims 1 to 4, when said program is executed by a processor. Information storage medium comprising a computer program product according to the preceding claim.