METHOD FOR SETTING A THERMOSTATIC VALVE

Abstract

The present invention relates to a method and device for setting the thermostatic head of a thermostatic valve in a room of a building. The thermostatic valve comprises a valve body and a thermostatic head comprising a motor and a piston that causes total or partial circulation, or no circulation, of fluid in the valve body. According to the invention: - the motor is activated (E500) to prevent fluid from circulating in the valve body, - it is checked (E502) whether the setting conditions are met, - the motor is activated (E503) to allow fluid to circulate in the valve body, - a first temperature is measured (E505), - the motor is activated (E508) to allow all the fluid to circulate in the valve body, - a second temperature is measured (E510), - the two measurements are compared (E513), - room temperature control parameters are applied (E514, E515) according to the result of the comparison.Figure to be published with the abbreviation: Fig. 5.

Description

Title of the invention: METHOD FOR PARAMETERIZING A THERMOSTATIC VALVE technical field

[0001] The present invention relates to a method for setting the parameters of a thermostatic valve for the control and regulation of a domestic heating system with fluid circulation. STATE OF PRIOR ART

[0002] A thermostatic valve is a valve that allows control of the fluid flow rate in a radiator. Typically, thermostatic valves contain a temperature-sensitive probe that expands and contracts according to the ambient temperature and actuates a mechanical system, which allows the appropriate amount of fluid to pass through. A thermostatic valve is also known as a thermostatic radiator valve.

[0003] A thermostatic valve consists of a valve body and a thermostatic head static. The thermostatic head allows you to set a desired temperature in a room of a building by moving a movable element contained in the valve body which modulates the amount of fluid circulating in the radiator.

[0004] There are three types of thermostatic heads, mechanical thermostatic heads, electronic thermostatic heads and connected thermostatic heads.

[0005] Mechanical thermostatic heads are the most classic type of thermostatic head, with a visible scale from 1 to 5 and a frost protection mode; they are not programmable. They are adjustable manually only.

[0006] Electronic thermostatic heads are easy to control and offer the same advantages as mechanical ones, but with the added benefit of a digital display and control accurate to half a degree. Electronic thermostatic heads are programmable, whether for hourly or weekly schedules. They can be controlled directly on the valve or via the room thermostat.

[0007] Connected thermostatic heads are the new version of thermostatic heads and operate in connection with an Internet network and sometimes with a connected thermostat.

[0008] Many valve bodies with widely varying technical characteristics are available on the market. Figure 1 illustrates an example of fluid flow variations as a function of the displacement of a thermostatic head for different valve bodies. Curve 10 represents the fluid flow variations as a function of the displacement of a moving element of a valve body for a valve body with a linear response and The curve labeled 20 represents the variations in fluid flow rate as a function of the displacement of a moving element of a valve body for a valve body with a non-linear response. It should be noted here that valve bodies, due to their structure, have different linearities.

[0009] Sometimes, valve bodies have a different opening point. The opening point is the point from which the fluid flows through the valve body and therefore the radiator.

[0010] In the example of [Fig. 1], the opening point is represented by the notation X%.

[0011] On the x-axis, the position corresponding to the displacement of the element moving the valve body to a position that does not allow fluid to flow into the valve body is noted Min.

[0012] It is possible to connect motorized and connected thermostatic heads to these valve bodies. These thermostatic heads incorporate a control mechanism that allows the user to regulate the room temperature according to a setpoint. The thermostatic head's control mechanism acts on the valve body to circulate a specific flow rate through the radiator. However, valve bodies have different linear characteristics depending on the brand or model.

[0013] Thus, for the same temperature setpoint and therefore the same action of the thermostatic head motor on the valve body, it is possible to obtain widely different flow rates and generate instabilities in temperature regulation.

[0014] These instabilities result in, among other things, excessive energy consumption due to the motor's unpredictable movements. This is particularly problematic when the thermostatic head is powered by a battery.

[0015] In particular, it is desirable to provide a solution that ensures uniform flow rates regardless of the type of valve body. Description of the invention

[0016] A method is proposed for setting the parameters of a thermostatic head of a thermostatic valve for the control and regulation of a domestic heating system with fluid circulation in a room of a building, the thermostatic valve comprising a valve body and a thermostatic head, the thermostatic head comprising a motor for moving a piston of the thermostatic head, the movement of the piston causing a movement of a movable element of the valve body, the movable element of the valve body allowing all or part of the fluid to circulate, or not allowing any fluid to circulate, characterized in that the method comprises the steps of:

[0017] - engine control to move the piston to a position in which the element The movable part of the valve body does not allow fluid to flow through the valve body.

[0018] - triggering a timer of a first predetermined duration,

[0019] - verification, after the elapsed time delay of a predetermined second duration completed, if the thermostatic valve parameter settings are met, the thermostatic valve parameter settings being a room temperature in the building lower than a predetermined temperature and variations in the room temperature during a second predetermined time delay are lower than a first predetermined threshold,

[0020] - motor control to move the piston a predetermined distance for to cause the moving element of the valve body to move in a direction that allows fluid to flow through the valve body,

[0021] - command to take a first measurement of the temperature of the room in the building after the elapsed time of a third predetermined duration and the memorization of the first measurement,

[0022] - motor control to move the piston and cause the displacement of the moving element of the valve body in a position that prevents fluid from flowing through the valve body,

[0023] - waiting for the elapse of a time delay of a fourth predetermined duration,

[0024] - motor control to move the piston and cause the displacement of the moving element of the valve body in a position allowing all the fluid to flow through the valve body,

[0025] - command to take a second measurement of the room temperature in the building after the timing of the third predetermined duration and the memorization of the second measurement,

[0026] - comparison of the second measurement to the first measurement multiplied by a co efficient,

[0027] - application of room temperature control parameters in depending on the result of the comparison.

[0028] The invention also relates to a parameter setting device for a thermostatic head of a thermostatic valve for the control and regulation of a domestic heating system with fluid circulation in a room of a building, the thermostatic valve comprising a valve body and a thermostatic head, the thermostatic head comprising a motor for moving a piston of the thermostatic head, the movement of the piston causing a movement of a movable element of the valve body, the movable element of the valve body allowing all or part of the fluid to circulate or not allowing fluid to circulate in the valve body, characterized in that the parameter setting device comprises:

[0029] - engine control means for moving the piston to a position in the in which the moving element of the valve body does not allow fluid to flow into the valve body,

[0030] - means for triggering a time delay of a first predetermined duration finished.

[0031] - verification means, after a one-second delay predetermined duration, if the thermostatic valve setting conditions are met, the thermostatic valve setting conditions being a room temperature in the building lower than a predetermined temperature and variations in the room temperature during the time delay of a second predetermined duration are lower than a first predetermined threshold,

[0032] - means for controlling the engine to move the piston a predetermined distance completed to cause the moving element of the valve body to move in a direction that allows fluid to flow through the valve body,

[0033] - means for controlling a first measurement of the room temperature of the building after the elapsed time of a third predetermined duration and memorization of the first measurement,

[0034] - engine control means for moving the piston and causing the de placement of the moving element of the valve body in a position that prevents fluid from flowing through the valve body,

[0035] - means for waiting for the elapsed time of a fourth duration predetermined,

[0036] - engine control means for moving the piston and causing the de placement of the moving element of the valve body in a position allowing all the fluid to flow through the valve body,

[0037] - means for controlling a second measurement of the room temperature building after the expiration of the third predetermined time delay and memorization of the second measurement,

[0038] - means of comparing the second measurement to the first multiplied measurement by a coefficient,

[0039] - means for applying room temperature control parameters of the building based on the result of the comparison.

[0040] Thus, the present invention provides a solution which makes it possible to guarantee uniform flow rates regardless of the type of valve body and which is economical in electrical energy.

[0041] According to a particular embodiment, the process is executed a plurality of times and at least part of the stored temperatures are used to determine the temperature regulation parameters of the room in the building according to the result of the comparison.

[0042] Thus, the regulation is precisely adapted to the valve body.

[0043] According to a particular embodiment, the first predetermined duration is equal to 24 hours, the second predetermined duration is equal to one hour, the third predetermined duration is equal to 20 minutes and the fourth predetermined duration is equal to 60 minutes.

[0044] Thus, the first predetermined duration allows the thermostatic valve to be configured under repeatable conditions. The second predetermined duration ensures temperature stability. The third predetermined duration provides sufficient time to observe the effect of the control action. The fourth predetermined duration allows the temperature to decrease in order to return to the initial conditions.

[0045] According to a particular embodiment, the predetermined temperature is equal to 17°C, the first predetermined threshold is equal to 0.5°C / hour and the second predetermined threshold is equal to 3°C / hour.

[0046] Thus, the temperature of 17° allows us to be in conditions in which no other energy input other than that caused by the movement of the moving element of the valve body disturbs the setting of the thermostatic valve.

[0047] According to a particular embodiment, the predetermined distance is equal to 15% of the total displacement distance of the piston actuating the movement of the moving element of the valve body plus 20% of the remaining total displacement distance of the piston or is equal to the displacement distance to go to an opening point plus 20% of the remaining total displacement distance of the piston actuating the movement of the moving element of the valve body.

[0048] Thus, this 20% distance allows positioning in an area where the non-linear valve will be practically at maximum power.

[0049] A computer program is also proposed, which can be stored on a medium and / or downloaded from a communication network, in order to be read by a processor. This computer program includes instructions for implementing the process carried out by an internet gateway, as mentioned above, when said program is executed by the processor. The invention also relates to an information storage medium for storing such a computer program. Brief description of the drawings

[0050] The features of the invention mentioned above, as well as others, will become clearer upon reading the following description of at least one exemplary embodiment, said description being made in relation to the accompanying drawings, among which:

[0051] [Fig. 1] illustrates an example of variations in fluid flow rate as a function of the displacement of a thermostatic head for different valve bodies;

[0052] [Fig.2] schematically illustrates an example of the hardware arrangement of a controller included in a thermostatic head according to the present invention;

[0053] [Fig.3] schematically illustrates an example of the hardware arrangement of a valve thermostatic comprising the present invention and having a linear valve body type comprising the present invention;

[0054] [Fig.4] schematically illustrates an example of the hardware arrangement of a valve thermostatic comprising the present invention and having a non-linear valve body type comprising the present invention;

[0055] [Fig.5] schematically illustrates an example of an algorithm executed by a controller according to the present invention.

[0056] DETAILED DESCRIPTION OF IMPROVEMENTS

[0057] Fig. 2 schematically illustrates an example of a material arrangement of a controller included in a thermostatic head according to the present invention.

[0058] The Cont controller comprises, connected by a communication bus 201: a processor Proc 200; a RAM (Random Access Memory) 203; a ROM (Read Only Memory) 202 or a Flash memory; a radio interface 204 and an input / output interface 206.

[0059] The input / output interface 206 allows the rotation of a motor included in the thermostatic head to be controlled, and a temperature to be obtained from a temperature sensor included in the thermostatic head.

[0060] The Proc 200 processor is capable of executing instructions loaded into RAM 203 from ROM 202, external memory (such as an SD card), storage media (such as a hard disk drive), or a communication network. When the Cont controller is powered on, the Proc 200 processor is capable of reading instructions from RAM 203 and executing them. These instructions form a computer program that causes the Proc 200 processor to implement all or part of the behaviors, algorithms, and steps described herein.

[0061] Thus, all or part of the algorithms and steps described herein can be implemented in software form by executing a set of instructions by a programmable machine, such as a DSP (Digital Signal Processor), a microcontroller, or a processor. All or part of the algorithms and steps described herein can also be implemented in hardware form by a machine or a component (a "chip"), such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application-Specific Integrated Circuit). Therefore, the Cont controller includes electronic circuitry adapted and configured to implement the behaviors, algorithms, and steps described herein.

[0062] Figure 3 schematically illustrates an example of the hardware arrangement of a valve thermostatic comprising the present invention and having a linear valve body type comprising the present invention.

[0063] The thermostatic head 100 includes a controller Cont, a motor 301, transmission means 302, a piston 303 and a temperature sensor 300.

[0064] The valve body 304 includes a movable element 306 actuated by the piston 303 whose movement modulates the quantity of fluid circulating in a conduit 305 connected to a radiator not shown in [Fig.3].

[0065] When the moving element 306 is in a position denoted Min in [Fig.3], the moving element 306 does not allow fluid to pass into the valve body. This position is called the minimum stop.

[0066] When the moving element 306 is in a position denoted Max in [Fig.3], the moving element 306 allows the fluid to pass through the entire conduit of the valve body. This position is called the maximum stop.

[0067] When the moving element 306 is in a position between Min and Max, the moving element 306 partially allows fluid to pass through the valve body conduit. To represent the different positions taken by the moving element 306, the term "percentage of valve body opening" is sometimes used.

[0068] Fig. 4 schematically illustrates an example of a material arrangement of a thermostatic valve comprising the present invention and whose valve body type is non-linear comprising the present invention.

[0069] The thermostatic head 100 includes a controller Cont, a motor 301, transmission means 302, a piston 303 and a temperature sensor 300.

[0070] The valve body 404 includes a movable element 406 actuated by the piston 303 whose movement modulates the quantity of fluid circulating in a conduit 405 connected to a radiator not shown in [Fig.3].

[0071] When the moving element 406 is in a position marked Min in [Fig.4], the moving element 406 does not allow fluid to pass into the valve body. This position is called the minimum stop.

[0072] When the moving element 406 is in a position marked Max in [Fig.4], the moving element 406 allows the fluid to pass through the entire conduit of the valve body. This position is called the maximum stop.

[0073] When the moving element 406 is in a position between Min and Max, the moving element partially allows fluid to pass through the valve body conduit. To represent the different positions taken by the moving element 406, the term "percentage of valve body opening" is sometimes used.

[0074] Figure 5 schematically illustrates an example of an algorithm executed by a controller according to the present invention.

[0075] The present algorithm is executed during the installation of the thermostatic head on a valve body already installed.

[0076] Prior to step E500, a calibration is performed.

[0077] The calibration step determines the maximum distance that the piston 303 can travel to bring the moving element 306 or 406 into contact with a lower wall of the valve head 304 or 404. This maximum distance is determined by comparing a measurement of the current delivered to the motor 301 to a predetermined value. This value is called the total travel distance of the piston 303. The position of the piston 303 corresponding to this distance is the minimum stop.

[0078] A maximum stop is also determined; the maximum stop corresponds to the distance traveled by the piston 303 to place the moving element outside the conduit 305 or 405. For example, the maximum stop is a predefined value.

[0079] In step E500, the controller Cont commands the motor Mot 301 to rotate it until the piston 303 is displaced such that the moving element of the valve body is in a position that prevents fluid from flowing through the valve body, and activates a timer of a predetermined duration. This predetermined duration is, for example, 24 hours or more. When the 24-hour timer has elapsed, the controller Cont proceeds to step E501.

[0080] It should be noted here that, alternatively, step E500 is executed by the Cont controller after step E516, which will be described later.

[0081] At step E501, the Cont controller activates a timer of a second predetermined duration. The second predetermined duration is, for example, at least 1 hour. When the 1-hour timer has elapsed, the Cont controller proceeds to step E502.

[0082] In step E502, the Cont controller checks whether the thermostatic valve parameter settings are met. These parameters are defined to detect a certain temperature increase measured by the thermostatic valve head, which coincides with fluid circulation in the radiator and therefore the valve body's opening point being crossed. Since the temperature rise associated with the valve body opening is small, it is important to trigger this detection phase when room conditions are favorable.

[0083] Thus, the room temperature must be sufficiently low, i.e., within a range of 14°C to 18°C, for example, 17°C. These conditions are generally met at night during the winter. The other condition requires a small variation in room temperature, i.e., less than 0.5°C / hour in absolute value. Indeed, if this variation is too large, it could mask the temperature increase generated by the detection of the valve body's opening point.

[0084] Thus the conditions for setting the thermostatic valve are a room temperature in the building in a range of 14°C to 18°C, and that the variations in the room temperature during the time delay of a second predetermined duration are less than 0.5°C in absolute value.

[0085] If the thermostatic valve parameterization conditions are met, the Cont controller proceeds to step E503. Otherwise, the Cont controller returns to step E501.

[0086] At step E503, the controller Cont commands the motor Mot 301 to rotate it to achieve a displacement of the piston 303, starting from the minimum stop, to a predetermined distance equal to 15% of the total displacement distance of the piston 303 actuating the displacement of the moving element of the valve body plus 20% of the remaining displacement distance of the piston 303 or is equal to the displacement distance to go, starting from the minimum stop, to an opening point plus 20% of the remaining displacement distance of the piston actuating the displacement of the moving element of the valve body.

[0087] The remaining travel distance of the piston 303 is the distance between the minimum stop plus 15% of the total travel distance of the piston 303 and the maximum stop or the distance between the opening point and the maximum stop.

[0088] The opening point is the point from which the fluid flows through the valve body and therefore the radiator.

[0089] The opening point is determined, for example, as follows:

[0090] - waiting for a 24-hour time delay to elapse,

[0091] - verification, after a time delay of at least 10 minutes, if The thermostatic valve parameter settings are met, the thermostatic valve parameter settings being a room temperature in the building lower than a predetermined temperature and variations in the room temperature in the building during a second predetermined time delay are lower than a first predetermined threshold.

[0092] - control of the motor included in the valve head to move the piston of a distance equal to 5% of the total displacement distance of the piston actuating the movement of the moving element of the valve body,

[0093] - measurement of the room temperature in the building after the passage of a time a duration equal to 10 minutes,

[0094] - comparison of the variations in room temperature in the building during the temperature porization of lOmn to a second predetermined threshold,

[0095] - reiteration of the order verification and measurement steps as long as the va variations in room temperature during the 10m time delay are below the predetermined variation threshold,

[0096] - memorization of the distance to which the piston has been moved as the point opening of the thermostatic valve head.

[0097] At step E504, the Cont controller activates a timer of a third predetermined duration. The third predetermined duration is, for example, 20 minutes. When the 20-minute timer has elapsed, the Cont controller proceeds to step E505.

[0098] The principle of the invention consists of differentiating between linear and nonlinear valve bodies by comparing the temperature increases measured by the thermostatic valve head for different valve body opening setpoints. Thus, if the temperature increase, starting from the opening point or from 15% of the total piston stroke, for a remaining 20% ​​stroke of the piston 303, is equivalent to a temperature increase for a fully open valve, this means that the valve body exhibits nonlinear behavior. Conversely, the valve body exhibits linear behavior.

[0099] A 20-minute delay allows for the inertia of the room and the radiator to be taken into account, the setpoint being maintained during this time.

[0100] At step E505, the Cont controller obtains a first measurement T'(l) of the temperature of the room in the building and stores it.

[0101] At step E506, the Cont controller commands the motor included in the thermostatic head to move the piston 303 and move the moving element of the valve body to a position that does not allow fluid to flow into the valve body.

[0102] At step E507, the Cont controller activates a timer of a fourth predetermined duration. The fourth predetermined duration is, for example, 60 minutes. When the 60-minute timer has elapsed, the Cont controller proceeds to step E508.

[0103] At step E508, the controller Cont commands the motor Mot 301 to rotate it to achieve a displacement of the piston 303 which corresponds to the maximum stop.

[0104] At step E509, the Cont controller activates a timer equal to the third predetermined duration. When the 20-minute timer has elapsed, the Cont controller proceeds to step E510.

[0105] At step E510, the Cont controller obtains a second measurement T'(2) of the temperature of the room in the building and stores it along with an index value.

[0106] The index is equal to the value 1 at the first iteration of the algorithm.

[0107] At step E511, the Cont controller checks if the index value is greater than 3. If so, the Cont controller proceeds to step E512. If not, the Cont controller proceeds to step E516.

[0108] At step E516, the Cont controller increments the index value by one unit and returns to step E500.

[0109] At step E512, the Cont controller performs a processing operation on the three pairs of stored temperature values. The processing may, for example, consist of excluding a value that is significantly different from the other two values ​​T'(l) or T'(2), or of averaging all three stored T'(l) values ​​and averaging all three T'(2) values.

[0110] At step E513, the Cont controller determines whether the thermostatic valve is linear or not by processing the three pairs of temperature values. The Cont controller checks whether the temperature T'(2) is greater than 1.1 times the temperature T'(1).

[0111] If yes, the Cont controller proceeds to step E514 and if no, the The controller proceeds to step E515.

[0112] At step E514, the Cont controller determines that the thermostatic valve is linear and applies minimum and maximum reference values ​​to a PID control. The minimum reference value is the position of the opening point or is equal to 15% of the total displacement distance of the piston 303 from the minimum stop. The maximum reference value is the one closest to the maximum flow rate. For example, the maximum reference value is equal to the minimum reference value plus 60% of the total displacement distance of the piston 303.

[0113] At step E515, the Cont controller determines that the thermostatic valve is non-linear and applies minimum and maximum references to PID control. The minimum reference is the position of the opening point or is equal to 15% of the total displacement distance of the piston 303 from the minimum stop. The maximum reference is the one closest to the maximum flow rate. For example, the maximum reference is equal to the minimum reference plus 35% of the total displacement distance of the piston 303.

Claims

1. Demands A method for setting the thermostatic head of a thermostatic valve for the control and regulation of a domestic heating system with fluid circulation in a room of a building, the thermostatic valve comprising a valve body and a thermostatic head, the thermostatic head comprising a motor for moving a piston of the thermostatic head, the movement of the piston causing a movement of a movable element of the valve body, the movable element of the valve body allowing all or part of the fluid to circulate, or not allowing any fluid to circulate, characterized in that the method comprises the steps of: - motor control (E500) to move the piston to a position in which the moving element of the valve body does not allow fluid to flow into the valve body, - triggering (E500) a timer of a predetermined initial duration, - verification (E502), at the end of a time delay of a second predetermined duration, if the parameter conditions of the thermostatic valve are met, the parameter conditions of the thermostatic valve being a room temperature in the building lower than a predetermined temperature and variations in the room temperature in the building during the time delay of a second predetermined duration are lower than a first predetermined threshold, - control (E503) of the motor to move the piston a predetermined distance to cause the moving element of the valve body to move in a direction allowing fluid to flow through the valve body, - command (E505) of a first measurement of the room temperature of the building after the elapsed time of a third predetermined duration and storage of the first measurement, - command (E506) of the motor to move the piston and cause the moving element of the valve body to move to a position that does not allow fluid to flow in the valve body, - waiting (E507) for the elapsed time of a fourth predetermined duration, - control (E508) of the motor to move the piston and cause the moving element of the valve body to move to a position allowing the entire fluid to circulate in the valve body, - command (E510) of a second measurement of the temperature of the room in the building after the elapsed time delay of the third predetermined duration and memorization of the second measurement, - comparison (E513) of the second measurement to the first measurement multiplied by a coefficient, - application (E514, E515) of temperature regulation parameters of the room in the building according to the result of the comparison.

2. A method according to claim 1, characterized in that the method is carried out a plurality of times and at least a part of the stored temperatures are used to determine the temperature control parameters of the room in the building as a function of the result of the comparison.

3. A method according to claim 1 or 2, characterized in that the first predetermined duration is equal to 24 hours, the second predetermined duration is equal to one hour, the third predetermined duration is equal to 20 minutes and the fourth predetermined duration is equal to 60 minutes.

4. A method according to any one of the preceding claims, characterized in that the predetermined temperature is equal to 17°C, the first predetermined threshold is equal to 0.5°C / hour and the second predetermined threshold is equal to 3°C / hour.

5. A method according to any one of the preceding claims, characterized in that the predetermined distance is equal to 15% of the total displacement distance of the piston actuating the displacement of the moving element of the valve body plus 20% of the remaining displacement distance of the piston or is equal to the displacement distance to go to an opening point plus 20% of the total remaining displacement distance of the piston actuating the displacement of the moving element of the valve body.

6. A device for setting the thermostatic head of a thermostatic valve for the control and regulation of a domestic fluid-circulating heating system in a room of a building, the thermostatic valve comprising a valve body and a thermostatic head, the thermostatic head comprising a motor for moving a piston of the thermostatic head, the movement of the piston causing a movement of a movable element of the valve body, the moving element of the valve body allowing all or part of the fluid to circulate within the valve body, or preventing it from circulating, characterized in that the parameter setting device comprises: - means for controlling the engine to move the piston to a position in which the moving element of the valve body does not allow fluid to flow into the valve body, - means of triggering a time delay of a predetermined initial duration, - means of verifying, after a predetermined second time delay, whether the parameter conditions of the thermostatic valve are met, the parameter conditions of the thermostatic valve being a room temperature in the building lower than a predetermined temperature and variations in the room temperature during the second predetermined time delay are lower than a first predetermined threshold, - means of controlling the motor to move the piston a predetermined distance to cause the moving element of the valve body to move in a direction allowing the fluid to circulate in the valve body, - means for controlling an initial measurement of the room temperature in the building after the elapsed time of a predetermined third duration and for storing the first measurement, - means for controlling the motor to move the piston and cause the moving element of the valve body to move to a position that prevents fluid from circulating in the valve body, - means for waiting for the elapsed time of a predetermined fourth duration, - means for controlling the motor to move the piston and cause the moving element of the valve body to move to a position allowing all the fluid to circulate through the valve body, - means for controlling a second measurement of the room temperature after the elapsed time of the third predetermined duration and storing the second measurement, - means for comparing the second measurement to the first measurement multiplied by a coefficient, - means of applying room temperature regulation parameters in the building based on the result of the comparison.

7. Product computer program comprising instructions for implementing, by a processor, the method according to any one of claims 1 to 5, when said program is executed by said processor.

8. Information storage medium storing a computer program comprising instructions for implementing, by a processor, the method according to any one of claims 1 to 5, when said program is read and executed by said processor.

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