公开(公告)号：US20240118670A1

公开(公告)日：2024-04-11

申请号：US17955699

申请日：2022-09-29

Applicant: Johnson Controls Tyco IP Holdings LLP

Inventor： Anas W. I. Alanqar ,  Michael J. Wenzel ,  Jon Douglas ,  Fang Du

IPC: G05B19/042

CPC classification number: G05B19/042 ,  G05B2219/2614

Abstract: An control method includes obtaining measurements of a carbon dioxide (CO2) level of a zone and a temperature of the zone. The method includes determining, based on the CO2 level of the zone and the temperature of the zone, a combination if (i) control decisions for an air handling unit (AHU) and (ii) control decisions for a damper of a variable air volume (VAV) unit to satisfy both a ventilation control objective and a temperature control objective. The control decisions for the AHU include adjustments to a fresh air intake fraction of the AHU between multiple values over time, and the control decisions for the VAV unit include adjustments to a position of a damper of the VAV unit over time. The method includes operating the AHU according to the control decisions for the AHU and operate the VAV unit according to the control decisions for the VAV unit.

公开(公告)号：US20240068850A1

公开(公告)日：2024-02-29

申请号：US17900297

申请日：2022-08-31

Applicant: Johnson Controls Tyco IP Holdings LLP

Inventor： Brennan Fentzlaff ,  Mark G. Freund ,  Jon Douglas

IPC: G01F1/36

CPC classification number: G01F1/363

Abstract: An airflow sensor system for an air duct including a damper positioned therein is provided. The controller is configured to determine, via a first pressure sensor, a first airflow measurement based on a first one or more pressure measurements. The controller is further configured to determine, via a second pressure sensor and a damper position sensor, a second airflow measurement based on a second one or more pressure measurements and one or more damper position measurements. The first airflow measurement and the second airflow measurement have a first uncertainty value and a second uncertainty value associated therewith. The controller is further configured to determine an estimated airflow based on weighted values of the first airflow measurement and the second airflow measurement. The weighted values are based on the airflow measurements and the uncertainty values associate therewith.

公开(公告)号：US20230251158A1

公开(公告)日：2023-08-10

申请号：US18135320

申请日：2023-04-17

Applicant: Johnson Controls Tyco IP Holdings LLP

Inventor： John Scholten ,  Jon Douglas ,  Jack A. Peterson

IPC: G01L27/00 ,  F15B19/00 ,  G01F1/36 ,  G01F25/10

CPC classification number: G01L27/005 ,  F15B19/005 ,  G01F1/36 ,  G01F25/10 ,  F24F2110/40

Abstract: An airflow sensor assembly for an air duct is provided. The airflow sensor assembly includes the air duct having an interior wall and an exterior wall, a high pressure pickup device, a low pressure pickup device, a pressure redirection device, and a pressure sensor. The pressure redirection device is fluidly coupled to the high pressure pickup device and the low pressure pickup device and includes a low inlet, a high inlet, and a common outlet. The pressure sensor is selectively fluidly coupled to the high pressure pickup device and the low pressure pickup device and includes a first inlet and a second inlet. The second inlet is fluidly coupled to the common outlet of the pressure redirection device.

公开(公告)号：US12247892B2

公开(公告)日：2025-03-11

申请号：US18135320

申请日：2023-04-17

Applicant: Johnson Controls Tyco IP Holdings LLP

Inventor： John Scholten ,  Jon Douglas ,  Jack A. Peterson

IPC: G01L27/00 ,  F15B19/00 ,  F24F110/40 ,  G01F1/36 ,  G01F25/10

Abstract: An airflow sensor assembly for an air duct is provided. The airflow sensor assembly includes the air duct having an interior wall and an exterior wall, a high pressure pickup device, a low pressure pickup device, a pressure redirection device, and a pressure sensor. The pressure redirection device is fluidly coupled to the high pressure pickup device and the low pressure pickup device and includes a low inlet, a high inlet, and a common outlet. The pressure sensor is selectively fluidly coupled to the high pressure pickup device and the low pressure pickup device and includes a first inlet and a second inlet. The second inlet is fluidly coupled to the common outlet of the pressure redirection device.