# US 11,306,933 B2 · Method and device for internet-based optimization of parameters of heating control

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- Number: US 11,306,933 B2
- Document ID: US11306933B2
- Status: Granted
- Kind: B2
- Application number: 16/496,108
- Filed: 2018-02-05
- Published: 2020-03-26
- Granted: 2022-04-19
- Earliest claimed: 2017-03-24
- Assignees: Viessmann Werke GmbH & Co. KG
- Applicants: Viessmann Werke GmbH & Co. KG
- Inventors: Jan Strubel; Christian Arnold
- Web page: https://patentgrep.com/patent/US11306933B2

## CPC

- F24F 11/30: for purposes related to the operation of the system, e.g. for safety or monitoring
- G05D 23/1917: {using digital means}
- F24F 11/62: characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- G05B 15/02: electric
- G05D 23/1931: {to control the temperature of one space}
- F24F 2110/10: Temperature
- F24F 2120/00: Control inputs relating to users or occupants
- G05B 2219/23298: Remote load of program, through internet
- G05B 2219/2642: Domotique, domestic, home control, automation, smart house
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)

## Abstract

The present invention relates to a method for determining a set of optimized control parameters (Θk) of a closed-loop controller (3) or an open-loop controller for an HVACR (heating, ventilation, air conditioning and refrigeration) system (2). In a first method step, an outside temperature (TA), an actual room temperature (TR) of a room (9), a supply temperature (TVL), a predefined target room temperature (TR,W), and a predefined target supply temperature (TVL,W) are detected. From the detected measured values (TA, TR, TR,W, TVL, TVL,W) and a time (tk) of detection data packet (Dk) is generated, which is transmitted via an internet connection to a server (8) where the data packet (Dk) is stored in a storage medium (6, 7) connected to the server (8). In the next method step, a set of optimized control parameters (Θk) is calculated on the basis of the measured values (TA, TR, TR,W, TVL, TVL,W) of the transmitted and stored data packet (Dk) and on the basis of measured values (TA, TR, TR,W, TVL, TVL,W) of a plurality of further data packets (D0 . . . k) generated at an earlier time (t. . . k) of a specified period (Δt) and/or at least one of a plurality of previously determined sets of optimized control parameters (Θk-1) by executing a calculation algorithm on the server (8). In the following method step, the calculated set of optimized control parameters (Θk) is stored in the storage medium (6, 7) connected to the server (8) and is transmitted via the internet connection to the closed-loop controller (3) or the open-loop controller of the HVACR system (2) or to a user (B) of the HVACR system (2).

## Claims

### Claim 1

A method for determining a set of optimized control parameters (Θk) of a closed-loop controller (3) or an open-loop controller for an HVACR (heating, ventilation, air conditioning and refrigeration) system (2) comprising the following steps:
detecting an outside temperature (TA);
detecting an actual room temperature (TR) of a room (9);
detecting a supply temperature (TVL);
detecting a predefined target room temperature (TR,W);
detecting a predefined target supply temperature (TVL,W);
generating a data packet (Dk) with the detected measured values (TA, TR, TR,W, TVL, TVL,W) and a time (tk) of detection;
transmitting the data packet (Dk) to a server (8) via an internet connection;
storing the data packet (Dk) in a storage medium (6, 7) connected to the server (8); and
calculating a set of optimized control parameters (Θk) on the basis of the measured values (TA, TR, TR,W, TVL, TVL,W) of the transmitted and stored data packet (Dk) and on the basis of:
measured values (TA, TR, TR,W, TVL, TVL,W) of a plurality of further data packets (D0 . . . k) generated at an earlier time (t. . . k) of a specific period (Δt), and/or
at least one of a plurality of previously determined sets of optimized control parameters (Θk-1);
wherein the set of optimized control parameters (Θk) is calculated by executing a calculation algorithm on the server (8) that
determines a first deviation (eR) between the actual room temperature (TR) and the target room temperature (TR,W) for each data packet (D0 . . . k) of a predefined time period (Δt),
determines a second deviation (eVL) between the supply temperature (TR) and the predefined supply temperature (TVL,W) for each data packet (D0 . . . k) of the predefined time period (Δt), and
determines and applies a weighting factor between 0 and 1 on the basis of the determined deviations (eR, eVL) so that, when calculating the set of optimized control parameters (Θk), low deviation data packets (D0 . . . k) are taken more into account and high deviation data packets (D0 . . . k) are taken less into account;
storing the calculated set of optimized control parameters (Θk) in the storage medium (6, 7) connected to the server (8); and
transmitting the calculated set of optimized control parameters (Θk) from the server (8) to the closed-loop controller (3) or the open-loop controller of the HVACR system (2) via the internet connection and adopting the set of optimized control parameters (Θk) by the closed-loop controller (3) or the open-loop controller of the HVACR system (2), or
sending a notification to a user (B) of the HVACR system (2) with the calculated set of optimized control parameters (Θk) and setting, by the user (B), the set of optimized control parameters (Θk) on the closed-loop controller (3) or the open-loop controller of the HVACR system (2).

### Claim 2 (depends on 1)

The method according to claim 1, wherein the method further comprises:
detecting, at the time (tk), at least one further value from the group consisting of
return temperature (TRL);
mass flow ({dot over (m)});
solar radiation (Gsol);
external heat source input (PFW);
wherein the generated data packet (Dk) comprises the further measured value(s) (TRL, {dot over (m)}, Gsol, PFW), and the calculation algorithm determines the set of optimized control parameters (Θk) on the basis of at least one of the further measured values (TRL, {dot over (m)}, Gsol, PFW).

### Claim 3 (depends on 1)

The method according to claim 1, wherein the time period (Δt) used in calculating the set of optimized control parameters (Θk) is predefined on the basis of the number of data packets (D0 . . . k) stored in the storage medium (6, 7).

### Claim 4 (depends on 1)

The method according to claim 1, wherein the measured values are detected regularly after a predefined time interval has elapsed, and the set of optimized control parameters (Θk) is calculated recurrently each time a predetermined plurality of predefined time intervals have elapsed, so that a corresponding plurality of generated data packets (D0 . . . k) for calculating the set of optimized control parameters (Θk) are stored in the storage medium (6, 7) of the server (8).

### Claim 5

A system (1) for determining a set of optimized control parameters (Θk) of a closed-loop controller (3) or an open-loop controller for an HVACR (heating, ventilation, air conditioning and refrigeration) system (2) comprising:
an outside temperature sensor (11) for detecting an outside temperature (TA);
a room temperature sensor (10) for detecting an actual room temperature (TR), which is arranged in a room (9);
a supply temperature sensor (12) for detecting a supply temperature (TA);
an apparatus (17) for presetting a target room temperature (TR, w);
an apparatus (4) for presetting a target supply temperature (TVL, W);
an apparatus (22) for generating a data packet (Dk) with the detected measured values (TA, TR, TR,W, TVL, TVL,W) and a time (tk) of detection;
a transmission apparatus having an interface (20) for transmitting the data packet (Dk) to a server (8) via an internet connection; and
a storage medium (6, 7) connected to the server (8) for storing the data packet (Dk);
wherein the server (8) has a processor (CPU) configured to:
calculate a set of optimized control parameters (Θk) on the basis of measured values (TA, TR, TR,W, TVL, TVL,W) of the transmitted and stored data packet (Dk) of the point in time (tk) and on the basis of:
measured values (TA, TR, TR,W, TVL, TVL,W) of a plurality of further data packets (D0 . . . k-1) generated at earlier times (t0 . . . k-1) of a specified time period (Δt); and/or
at least one of a plurality of previously determined sets of control parameters (Θk-1);
execute a calculation algorithm for calculating the set of optimized control parameters (Θk) by
determining a first deviation (eR) between actual room temperature (TR) and target room temperature (TR,W) for each data packet (D0 . . . k) of a predefined time period (Δt),
determining a second deviation (eVL) between supply temperature (TR) and predefined supply temperature (TVL, W) for each data packet (D0 . . . k) of the predefined time period (Δt), and
determining and applying a weighting factor (w) between 0 and 1 on the basis of the determined deviations (eR, eVL), so that, when calculating the set of optimized control parameters (Θk), data packets (D0 . . . k) with low deviation are taken more into account and data packets (D0 . . . k) with high deviation are taken less into account;
store the calculated set of optimized control parameters (Θk) in the storage medium (6, 7) connected to the server (8); and
transmit the calculated set of optimized control parameters (Θk) via an interface (21) via the internet connection to the closed-loop controller (3) or the open-loop controller of the HVACR system (2) and adopt the set of optimized control parameters (Θk) by the closed-loop controller (3) or the open-loop controller of the HVACR system (2), or
send a notification with the calculated set of optimized control parameters (Ok) to a user (B) of the HVACR system (2) and, if the user (B) confirms the set of optimized control parameters (Θk), adopt the set of optimized control parameters (Θk) on the closed-loop controller (3) or the open-loop controller of the HVACR system (2).

### Claim 6 (depends on 5)

The system (1) according to claim 5, wherein the system (1) further comprises:
a return temperature sensor (15) for determining a return temperature (TRL); and/or
a mass flow sensor (13) for detecting a mass flow ({dot over (m)}); and/or
a solar radiation sensor (14) for detecting a solar radiation (Gsol); and/or
an apparatus for detecting an external heat source input (PFW);
wherein the apparatus (22) for generating a data packet is configured to generate the data packet (Dk) with the further measured value(s) (TRL, {dot over (m)}, Gsol, PFW), and the processor (CPU) is designed to calculate the set of optimized control parameters (Θk) on the basis of at least one of the further measured values (TRL, {dot over (m)}, Gsol, PFW).

### Claim 7 (depends on 5)

The system (1) according to claim 5, wherein the processor (CPU) of the server (8) is configured to predefine the time period (Δt) used in calculating the set of optimized control parameters (Θk) on the basis of the number of stored data packets (D0 . . . k).

### Claim 8 (depends on 5)

The system (1) according to claim 5, wherein the sensors detect the measured values regularly after a predefined time interval has elapsed, and the processor (CPU) of the server (8) is configured to recurrently calculate the set of optimized control parameters (Θk) each time a predetermined plurality of predefined time intervals have elapsed, so that a corresponding plurality of generated data packets (D0 . . . k) is stored in the storage medium (6, 7) of the server (8) for calculating the set of optimized control parameters (Θk).