Fluid meter with wake-up circuit

Abstract

A fluid meter configured to perform a metering measurement in a fluid circulation conduit, the fluid meter comprising:-a generator (12) configured to be driven by a circulation of a fluid,-at least one metering sensor (4) configured to perform a metering measurement in a fluid conduit (2),-a control block (6) configured to receive the metering measurement, -a first wake-up circuit (20) coupled at a first end (22) to the generator (12) and at a second end (24) to the control block (6) and configured to generate at the second end an edge on a first electrical signal (INT1) in response to establishing at the first end a voltage, said voltage being caused by driving the generator by circulation of a fluid, the control block is configured to effect wake-up of the fluid meter in response to an edge on the first electrical signal.

Description

Technical Field

[0001] The present invention belongs to the technical field of fluid meters. A fluid meter is a metering device configured to perform metering measurements in a fluid circulation pipeline. The fluid may be liquid (such as, for example, water or oil) or gaseous (such as, for example, a gaseous mixture of hydrocarbons consisting mainly of methane, such as natural gas). The metering measurement is usually the volume or flow rate associated with the fluid circulating through the pipeline. Background Art

[0002] In order to know some metering data about the circulation of a fluid in a pipeline, a fluid meter is usually used to generate metering measurements and make these measurements available. In order to perform these metering measurements, fluid meters equipped with components for transmitting information related to the metering data have been developed. These communication components may be suitable for remote communication and, for example, allow wired or wireless transmission of this information. The communication component may also have several information items organized into a menu in the display. In all cases, these meters require an electrical power supply. However, the meters may be arranged in a location that does not allow easy connection to the power grid, so that they must have an independent electrical power supply that is not connected to the power grid.

[0003] The simplest way to autonomously supply electric power to a fluid meter is to equip it with electric galvanic cells, i.e. on-site non-rechargeable energy storage batteries. However, the energy storage capacity must be sufficient to allow the supply of electric power over a long period of time (typically 20 years), which leads to the use of very large galvanic cells. In addition, the service life of the galvanic cells depends on the electric power consumption of the meter, which can significantly reduce the service life of the galvanic cells, which in any case eventually run out of service and must be replaced, a time-consuming operation that requires monitoring the state of the galvanic cells.

[0004] In order to overcome these disadvantages, it has been proposed to replace the primary battery with a rechargeable battery powered, for example, by a generator configured to be driven by the circulation of the fluid in the pipe and to generate electricity to recharge the battery. However, the potentially intermittent aspect of the circulation of the fluid requires a battery with a considerable electrical storage capacity, which requires large size and high cost. Summary of the invention

[0005] The object of the present invention is therefore to propose a fluid meter equipped with a sleep and wake-up functionality which makes it possible to significantly reduce the electrical power consumption of the fluid meter without changing the responsiveness of the fluid meter.

[0006] To this end, the present invention relates to a fluid meter configured to perform metering measurements in a fluid circulation pipeline and to transmit information related to the metering data, comprising:

[0007] - a generator configured to be driven by the circulation of the fluid through the fluid conduit and to generate electricity,

[0008] - at least one metering sensor configured to perform a metering measurement in said fluid conduit,

[0009] - a control block configured to receive said metrology measurements and to deliver information related to said metrology data,

[0010] And the fluid meter includes a first wake-up circuit, which is coupled to the generator at a first end and to the control block at a second end, the first circuit being configured to generate an edge on a first electrical signal at the second end in response to establishing a voltage at the first end, the voltage being caused by driving the generator by the circulation of the fluid through the pipeline, and the control block being configured to achieve wake-up of the fluid meter in response to the edge on the first electrical signal at the second end.

[0011] Thanks to the first wake-up circuit, the fluid meter can be in deep sleep in a very energy-efficient manner, since the first wake-up circuit does not comprise any active components consuming electrical energy, but can nevertheless be woken up immediately at the right time, i.e. when it is appropriate to perform a metering measurement, i.e. when the circulation of the fluid through the pipeline is resumed.

[0012] The fluid meter is advantageously completed by the following different features, taken alone or in different possible combinations thereof:

[0013] - said fluid meter is configured to perform metering measurements in said fluid conduit after said waking up and to return to sleep in dependence on said circulation of fluid through said conduit;

[0014] - said fluid meter is configured to return to sleep when a meter measurement reports zero flow during a first given time period or when said generator is no longer driven by said circulation of said fluid through said fluid conduit;

[0015] - the first circuit comprises a transistor configured to switch on in response to establishing the voltage at the first terminal;

[0016] - the transistor has its gate or its base connected to the first terminal and the first resistor and to an operating voltage through a second resistor, the second terminal to which the first electrical signal is applied being connected between the transistor and the second resistor;

[0017] - the fluid meter further comprises a second wake-up circuit, the second wake-up circuit comprising a control member coupled to the control block via a third terminal, the control member being configured such that actuation thereof causes an edge on a second electrical signal at the third terminal, the control member being configured to implement a wake-up of the fluid meter in response to the edge on the second electrical signal at the third terminal;

[0018] - said control block is configured to implement management of a human-machine interface, said management comprising the transfer of information related to said metering data after said wake-up of said fluid meter, said fluid meter being configured to return to sleep when a human-machine interface sleep criterion is met;

[0019] - the human-machine interface sleep criterion is that the control member has not been actuated within a second given time period;

[0020] - said communicating of said information relating to said metering data is done by displaying on a screen and / or by transmitting said metering data;

[0021] - the edge is a falling edge.

[0022] The invention also relates to a method for managing dormancy of a fluid meter, the fluid meter being configured to perform metering measurements in a fluid circulation pipeline and to transmit information related to metering data according to the invention, the method comprising:

[0023] - during a dormancy period of the fluid meter, monitoring by the control block the occurrence of an edge on the first electrical signal at the second terminal of the first wake-up circuit, during which a metering sensor configured to perform metering measurements in the fluid pipeline does not perform any metering measurements, the first wake-up circuit being coupled at a first terminal to a generator configured to be driven by the circulation of the fluid through the fluid pipeline and to generate electrical power,

[0024] - after the control block detects an edge on the first electrical signal at the second end, the control block implements a wake-up of the fluid meter in response to the edge on the first electrical signal at the second end, and

[0025] - said control block causes said fluid meter to go into hibernation in response to said circulation of fluid through said conduit.

[0026] Preferably, the control block:

[0027] - during a dormant period of the fluid meter, monitoring the occurrence of an edge on a second electrical signal at a third terminal of the second wake-up circuit,

[0028] - waking up the fluid meter in response to an edge on the second electrical signal at the third terminal,

[0029] - implementing management of a human-machine interface, said management comprising the transmission of information related to said metering data after said wake-up of said fluid meter,

[0030] - causing the fluid meter to enter sleep mode when a human-machine interface sleep criterion is met.

[0031] The invention also relates to a computer-readable program product comprising instructions which, when executed by a control block of a fluid meter according to the invention, cause the control block to implement the steps of the method according to the invention. A computer program product is typically a computer-readable non-transitory medium comprising instructions which, when executed by a control block of a fluid meter according to the invention, cause the control block to implement the steps of the method according to the invention. Such a computer-readable medium may be, for example, a hard disk, an SSD disk, a flash memory or an optical disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other features, objects and advantages of the present invention will become apparent from the following description, which is purely illustrative and not restrictive and which must be read in conjunction with the accompanying drawings, in which:

[0033] - Figure 1 is a schematic overall view of a fluid meter according to a possible embodiment of the present invention;

[0034] - Figure 2 is a simplified diagram of wake-up by a turbine of a fluid meter according to a possible embodiment of the present invention;

[0035] - Figure 3 is a simplified diagram of waking up by pressing a control member of a fluid meter according to a possible embodiment of the present invention. DETAILED DESCRIPTION

[0036] Figure 1A fluid meter configured to perform metering measurements in a fluid circulation pipeline 2 and to transmit information related to the metering data is shown. Typically, the fluid circulation pipeline 2 is part of a fluid meter in the sense that the fluid meter includes a conduit portion in which the fluid circulates, which conduit portion is integrated into the fluid circulation network. In order to perform metering measurements, the fluid meter includes at least one metering sensor 4, which is configured to perform metering measurements in the fluid pipeline 2. The metering sensor 4 is preferably arranged in the fluid pipeline 2. The type of metering sensor 4 depends on the technology used to perform the measurement, which can be ultrasonic, electromagnetic, thermal or Coriolis effect technology. In the example shown, two ultrasonic transducers are arranged in the pipeline facing each other, so that metering measurements are performed by ultrasound in a known manner. The metering measurement is usually a volume or flow rate associated with the fluid circulating in the pipeline 2, which is derived from data collected by one or more metering sensors 4.

[0037] The fluid meter comprises a control block 6, which comprises at least a processor and a memory and is configured to receive metering measurements from a metering sensor 4 and to deliver information items related to said metering data. Typically, the metering sensor 4 may be connected to the control block 6, for example by a wired link, and to transmit the metering measurements to the control block 6.

[0038] The communication of the information related to the metering data is performed by displaying on a screen and / or by transmission. Thus, the fluid meter may have a display screen 7 on which the information related to the metering data may be displayed. The fluid meter may be equipped with a man-machine interface (such as a button) making it possible to cause the display of this information related to the metering data and to make this display change, for example by making it possible to scroll its different types on the display screen 7. The information related to the metering data may preferably be transmitted to the outside of the fluid meter via a wireless link, in which case the fluid meter may comprise an antenna and any other known components making it possible to establish remote communication with the fluid meter. The information related to the metering data may be, for example, the instantaneous flow, the accumulated flow (volume), the average flow, etc.

[0039] Preferably, the fluid meter complies with EU Directive 2014 / 32 / EU on measuring instruments, more commonly known as MID (Measuring Instrument Directive). In particular, the fluid meter must be able to permanently transmit information related to metering data. Similarly, the fluid meter must be able to perform metering measurements at any time. Therefore, the fluid meter must have a permanent electrical power supply.

[0040] For this purpose, the fluid meter comprises a power supply block 10, which is configured to permanently supply power to the control block 6. The power supply block 10 comprises at least one energy storage element, and in particular at least one accumulator or galvanic cell. The term "galvanic cell" is understood to mean an electrical energy storage element which cannot be recharged, or whose configuration in the power supply block is such that charging is not possible within the power supply block. The galvanic cell preferably has a maximum energy reserve of less than 100Wh, such as, for example, 30.6Wh (8.5Ah at 3.6V) or 68.4Wh (19Ah at 3.6V).

[0041] The fluid meter also includes a generator 12, which is configured to be driven by the circulation of the fluid in the pipeline and to generate electricity. Preferably, the generator 12 is coupled to the control block 6, for example to the power supply block 10. At least a part of the generator 12 is arranged in the pipeline 2 in contact with the fluid so as to extract mechanical energy and convert it into electricity. Typically, the generator 12 is an impeller incorporating a rotor and a stator, preferably with blades. The generator 12 supplies electricity available outside the pipeline 2. Preferably, the generator 12 is arranged downstream relative to the metering sensor 4 in the fluid pipeline 2 in the circulation direction of the fluid, so as to avoid disrupting these metering measurements.

[0042] In addition or as an alternative to the primary battery, the power supply block 10 may include an electrical energy storage element that is rechargeable by the generator 12. In this case, the generator 12 may be coupled to the power supply block 10 of the control block 6 to supply the rechargeable electrical energy storage element. The rechargeable electrical energy storage element may be, for example, a rechargeable battery or capacitor, preferably having a maximum energy reserve E greater than or equal to 0.5Wh and even preferably greater than or equal to 0.8Wh. max The capacitor is preferably a supercapacitor. Typically, the capacitor may be an HLC (abbreviation for hybrid layer capacitor), but may also be such that it is possible to provide a maximum energy reserve E greater than or equal to 0.5 Wh. max Any type of supercapacitor. Preferably, the maximum energy E max At most 1 / 20 of the maximum energy of the primary battery (if the primary battery exists). For example, a rechargeable electrical energy storage element can deliver an electrical load of 0.222 Ah at 3.6V.

[0043] When dormant, the fluid meter does not perform metering measurements in the fluid pipeline. For example, when the metering sensor 4 includes ultrasonic transducers, these ultrasonic transducers do not emit any ultrasound when the fluid meter is in dormancy. Similarly, when dormant, no information related to the metering data is transmitted, for example, by display on a screen and / or by transmission of said metering data. During dormancy, all or most of the functions of the fluid meter can be disabled. Then, the electrical power consumption is zero or almost zero, which makes it possible to avoid consuming the electrical energy of an electrical storage element such as a primary battery or a capacitor. The electrical storage element can then be selected to have a smaller storage capacity, thereby reducing its volume and cost.

[0044] However, it is recommended that the fluid meter be woken up as efficiently as possible. Figure 1 and Figure 2 , the fluid meter includes a first circuit 20, which is coupled to the generator 12 at a first end 22 and to the control block 6 at a second end 24. In the absence of circulation of fluid through the fluid conduit 2, the generator 12 does not rotate, and there is no voltage across the terminals coupled to the first end 22 of the generator. When the generator 12 is driven by the circulation of fluid through the fluid conduit 2, a non-zero voltage V1 appears across the terminals of the first end 22, which reflects the power generated by the generator 12. A first electrical signal INT1 is applied to the second end 24. The first circuit 20 is configured to generate an edge on the first electrical signal INT1 at the second end 24 in response to establishing a voltage V1 at the first end, the voltage V1 being caused by driving the generator by the circulation of fluid through the fluid conduit 2.

[0045] The first circuit 20 includes a transistor Q1, which is configured to be turned on in response to establishing a voltage V1 at the first terminal 22. Preferably, the transistor is an NPN transistor rather than a PNP transistor. More specifically, the transistor Q1 has its gate or its base connected to the first terminal 22 and a first resistor R1 connected to the ground, and is connected to the operating voltage Vcc through a second resistor R2, and the second terminal 24 to which the first signal INT1 is applied is connected between the transistor Q1 and the second resistor R2. The operating voltage Vcc is generally selected to allow various supplied components to operate, and can be between 3V and 4V, and is, for example, 3.3V. The resistors R1 and R2 can, for example, have a resistance value between 0.5 and 10kΩ.

[0046] In this example, transistor Q1 is an NPN bipolar transistor with its base coupled to the first terminal 22, its emitter connected to ground (or to any other voltage different from the operating voltage and allowing transistor Q1 to turn on), and its collector coupled to both the second resistor R2 and the second terminal 24. Other configurations are contemplated, such as, for example, using an insulated gate field effect transistor (or MOSFET) with a gate instead of a base, a source instead of an emitter, and a drain instead of a collector.

[0047] As long as the transistor V1 is turned off, the first electrical signal at the second terminal maintains a constant voltage applied by the operating voltage Vcc. When a non-zero voltage V1 is established at the first terminal 22 after driving the generator 12, the transistor Q1 is turned on, thereby connecting the second terminal 24 to the ground via the transistor Q1. Therefore, the second terminal 24 experiences a sudden change in voltage, and the first electrical signal has an edge. Preferably, the edge is a falling edge as in the example shown, but may be a rising edge in another configuration.

[0048] The control block 6 is configured to implement a wake-up of the fluid meter in response to an edge on the first electrical signal INT1 at the second terminal 24. Figure 2 As shown in , starting from an initial state S0, the fluid meter is in a dormant state, and the control block 6 monitors the first electrical signal INT1 to detect an edge therein (step S1). If there is no edge on the first electrical signal INT1, the fluid meter remains in a dormant state. If an edge on the first electrical signal INT1 is detected, the control block causes the fluid meter to wake up (step S2). Wake-up implies re-enabling functions of the dormant meter that were not enabled during dormancy, and in particular the execution of metering measurements, but also other functions such as data logging. Therefore, the fluid meter is configured to perform metering measurements in the fluid pipeline 2 after wake-up (step S21). The fluid meter can also be configured to transmit information related to metering data after wake-up.

[0049] The control block 6 commands the fluid meter to return to sleep based on the circulation of the fluid through the pipeline 2, and more precisely, the entering of sleep is caused by the absence of the circulation of the fluid through the pipeline 2. Preferably, the fluid meter returns to sleep based on the result of the metering measurement. When the metering measurement reports zero or insufficient flow (usually below a flow threshold) during a first given time period T1, the fluid meter can be configured to return to sleep (step S22). The first given time period T1 is preferably between 1s and 30s, and is for example 5s.

[0050] When the generator 12 is no longer driven by the circulation of the fluid through the fluid conduit 2, for example when the voltage across the terminals of the generator becomes almost zero, less than a threshold value, the fluid meter can be configured to return to sleep. In fact, in the absence of circulation of the fluid through the conduit 2, the voltage V1 at the first terminal 22 becomes zero again, and the transistor Q1 is turned off again. Thus, the second terminal 24 finds itself isolated from the ground and regains a voltage related to the operating voltage Vcc. Then, the first electrical signal INT1 has an edge, usually rising as it does here, indicating that there is no fluid circulation. The detection of this edge on the first electrical signal INT1 by the control block 6 can be used to cause the meter to go to sleep.

[0051] When it has been determined by the control block 6 that there is no circulation of fluid in the pipe 2, the fluid meter goes to sleep (step S3), and the control block 6 again starts monitoring the first electrical signal INT1 to detect edges therein (step S1).

[0052] The first circuit 20 makes it possible to limit the metrological measurements only to the time when they are relevant and useful, i.e. when the fluid is circulating in the pipe 2. The first circuit 20 allows the generator 12 to wake up immediately when it starts to be driven by the circulation of the fluid, thus ensuring that any circulation of the fluid will be measured. Moreover, unlike systems that rely on sensors, for example, the first circuit 20 does not consume any power when it is dormant.

[0053] In order to ensure that the user wakes up at any time, in particular to allow the transfer of information related to metering data, the fluid meter comprises a second wake-up circuit 30, which comprises a control member B1 coupled to the control block S1 via a third terminal 32. The control member B1 is configured so that its actuation causes an edge on the second electrical signal INT2 at the third terminal 32. In particular, the control member B1 is capable of keeping the second circuit 30 open when it is not enabled and closing the second circuit 30 when it is enabled. The control member B1 is preferably a pre-positioned switch, whose contacts and the operating member return to the open position when the operating member is released after the command. For example, the control member B1 can be a push button. The control member B1 can be part of the above-mentioned human-machine interface.

[0054] In the example shown, the control member B1 is connected to the operating voltage Vcc via a third resistor R3 and to ground, or any other voltage different from the operating voltage Vcc. The third terminal 32 is connected to the control member B1 and the third resistor R3. The third resistor R3 may have a resistance value between 0.5 and 10 kΩ, for example.

[0055] When the user activates the control member B1, for example by pressing a push button, the third terminal 32 becomes connected to ground and the third terminal 32 thus experiences a sudden change in voltage and the second electrical signal INT2 has an edge. Preferably, the edge is a falling edge as in the example shown, but may be a rising edge in another configuration.

[0056] The control block 6 is configured to implement wake-up of the fluid meter in response to an edge on the second electrical signal at the third terminal 32. Figure 3 As shown above, starting from the initial state S0, the fluid meter is in a sleep state, and the control block 6 monitors the second electrical signal INT2 to detect an edge therein (step S10). If there is no edge on the second electrical signal INT2, the fluid meter remains in the sleep state. If an edge of the second electrical signal INT2 is detected, the fluid meter wakes up (step S20).

[0057] The control block 6 is configured to implement a human-machine interface management (step S210), which includes transmitting information related to the metering data after the awakening of the fluid meter. The transmission of information related to the metering data is completed, for example, by displaying on the screen 7 and / or by transmitting the metering data. Thus, by actuating the control member B1, the user can access information related to the metering data, and optionally other information, such as, for example, the meter number. The human-machine interface management can involve input-output peripherals, such as, for example, one or more buttons, with which the user can interact to control the fluid meter. For example, the user can modify the display on the screen 7, typically to navigate between menus or to change the displayed data. The user can also modify information items related to the metering data, such as, for example, resetting the accumulated flow or volume.

[0058] The fluid meter is configured to return to sleep (step S220) when the man-machine interface sleep criterion is met. Preferably, the sleep criterion is based on interaction with the user. For example, the man-machine interface sleep criterion is that the control member B1 is not actuated during the second given time period T2. The second given time period T2 is preferably between 1s and 30s, and is, for example, 5s. If the man-machine interface sleep criterion is not met, for example because the control member B1 has been actuated within the second time period T2, the fluid meter continues to manage the man-machine interface (step S210). On the other hand, if the man-machine interface sleep criterion is met, for example because the control member B1 has not been actuated within at least the second time period T2, the fluid meter returns to sleep (step S30) and interrupts the management of the man-machine interface.

[0059] The fluid meter returns to sleep in accordance with the circulation of the fluid through the pipeline 2, or in other words, the fluid meter returns to sleep due to the absence of the circulation of the fluid in the pipeline 2. Preferably, the fluid meter returns to sleep based on the result of the metering measurement. When the metering measurement reports zero or insufficient flow (usually below a flow threshold) within a first given time period T, the fluid meter can be configured to return to sleep (step S22). When the generator 12 is no longer driven by the circulation of the fluid through the fluid pipeline 2, for example, when the voltage across the terminals of the generator becomes almost zero, less than a threshold, the fluid meter can be configured to return to sleep.

[0060] The fluid meter is thus able to respond immediately to any prompting from the user actuating the control member B1 , but consumes no power in the sleep mode to ensure wake-up.

[0061] The first wake-up circuit 20 and the second wake-up circuit 30 make it possible to provide a very deep and therefore very energy-efficient sleep without any active components requiring a power supply, while still allowing the fluid meter to fully and responsively perform its metering measurement and human-machine interface management functions. Thus, the electrical storage element is less used and can be selected to have a lower energy storage capacity, thereby reducing the volume and cost while maintaining or increasing its lifespan.

[0062] The invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications are still possible, in particular from the point of view of the composition of the various technical features, or by substituting technical equivalents, without departing from the field of protection of the invention.

Claims

1. A fluid meter, configured to perform metering measurements in a fluid circulation pipeline and transmit information related to the metering data, comprising: - a generator (12) configured to be driven by the circulation of the fluid in the fluid conduit (2) and to generate electricity, - at least one metering sensor (4) configured to perform a metering measurement in the fluid conduit (2), - a control block (6) configured to receive said metrological measurements and to transmit information related to said metrological data, Characterized in that the fluid meter comprises: a first wake-up circuit (20) coupled to the generator (12) at a first terminal (22) and to the control block (6) at a second terminal (24), the first circuit (20) being configured to generate an edge on a first electrical signal (INT1) at the second terminal (24) in response to establishing a voltage at the first terminal, the voltage being caused by driving the generator (12) by the circulation of the fluid through the pipeline (2), the control block being configured to implement wake-up of the fluid meter in response to the edge on the first electrical signal (INT1) at the second terminal (24), and - a second wake-up circuit (30), the second wake-up circuit (30) comprising a control member (B1) coupled to the control block (6) via a third terminal (32), the control member (B1) being configured such that actuation thereof causes an edge on a second electrical signal (INT2) at the third terminal (32), the control block (6) being configured to implement wake-up of the fluid meter in response to the edge on the second electrical signal (INT2) at the third terminal (32).

2. The fluid meter according to claim 1, wherein: The fluid meter is configured to perform metering measurements in the fluid conduit (2) after the wake-up and return to sleep in accordance with the circulation of fluid through the conduit (2).

3. The fluid meter according to claim 2, wherein: The fluid meter is configured to return to sleep when a meter measurement reports zero flow during a first given time or when the generator (12) is no longer driven by the circulation of the fluid through the fluid conduit (2).

4. A fluid meter according to any one of the preceding claims, wherein: The first circuit (20) includes a transistor (Q1) configured to turn on in response to the voltage being established at the first terminal (22).

5. A fluid meter according to the preceding claim, wherein: The transistor (Q1) has its gate or its base connected to the first terminal (22) and the first resistor (R1), and is connected to the operating voltage (Vcc) through the second resistor (R2), and the second terminal (24) to which the first electrical signal (INT1) is applied is connected between the transistor (Q1) and the second resistor (R2).

6. A fluid meter according to any one of the preceding claims, wherein: The control block (6) is configured to implement management of a human-machine interface, the management comprising transmitting information related to the metering data after the wake-up of the fluid meter, the fluid meter being configured to return to sleep when a human-machine interface sleep criterion is met.

7. A fluid meter according to the preceding claim, wherein: The human-machine interface sleep criterion is that the control member (B1) is not actuated within a second given time period.

8. A fluid meter according to any one of the preceding claims, wherein: Said transfer of said information relating to said metering data is carried out by display on a screen (7) and / or by transmission of said metering data.

9. A fluid meter according to any one of the preceding claims, wherein: The edge is a falling edge.

10. A method of managing dormancy of a fluid meter, the fluid meter being configured to perform metering measurements in a fluid circulation pipeline and to transmit information related to metering data according to any one of the preceding claims, The method comprises: - during a sleep period of the fluid meter, monitoring (S1) by the control block (6) the occurrence of an edge on a first electrical signal (INT1) at a second terminal (24) of a first wake-up circuit (20), during which a metering sensor (4) configured to perform metering measurements in a fluid pipeline (2) does not perform any metering measurements, the first wake-up circuit (20) being coupled at a first terminal (22) to a generator (12), the generator (12) being configured to be driven by the circulation of the fluid through the fluid pipeline (2) and to generate electricity, - after the control block (6) detects an edge on the first electrical signal (INT1) at the second terminal (24), the control block (6) implements a wake-up (S2) of the fluid meter in response to the edge on the first electrical signal (INT1) at the second terminal (24), and - the control block (6) causes the fluid meter to enter sleep (S3) according to the circulation of the fluid through the pipeline (2).

11. The method according to claim 10, wherein: The control block (6): - during the dormancy of the fluid meter, monitoring (S10) the occurrence of an edge on the second electrical signal (INT2) at the third terminal (32) of the second wake-up circuit (30), - waking up the fluid meter in response to an edge on the second electrical signal (INT2) at the third terminal (32), - implementing management of a human-machine interface (S210), said management comprising transmitting information related to said metering data after said waking up of said fluid meter, - When the human-machine interface sleep criteria are met, causing the fluid meter to enter sleep (S30).

12. A computer readable computer program product comprising instructions which, when executed by a control block (6) of a fluid meter according to any one of claims 1 to 9, direct the control block (6) to implement the steps of the method according to any one of claims 10 or 11.

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