公开(公告)号：US20210172634A1

公开(公告)日：2021-06-10

申请号：US16702818

申请日：2019-12-04

Applicant: Johnson Controls Technology Company

Inventor： Kirk H. Drees ,  Homero L. Noboa ,  Brennan H. Fentzlaff

IPC: F24F11/41 ,  F16K37/00 ,  F24F11/64 ,  F24F11/88 ,  F24F11/89 ,  F24F11/76

Abstract: A freeze protection system for a heating, ventilation, or air conditioning (HVAC) system is shown. The freeze protection system includes a temperature sensor positioned at an inlet of a coil within which a liquid is at risk of freezing, and a controller comprising a processor and memory. The memory stores instructions that are executed by the processor. The processor is instructed to obtain a measured temperature of the liquid at the inlet of the coil from the temperature sensor, compare the measured temperature of the liquid at the inlet of the coil with a freeze prevention temperature threshold, engage a freeze prevention action in response to a determination that the measured temperature of the liquid at the inlet of the coil is less than or equal to the freeze prevention temperature threshold.

公开(公告)号：US10739028B2

公开(公告)日：2020-08-11

申请号：US15618492

申请日：2017-06-09

Applicant: Johnson Controls Technology Company

Inventor： Timothy I. Salsbury ,  Carlos Felipe Alcala Perez ,  Homero L. Noboa

IPC: F24F11/00 ,  F24F11/30 ,  F24F11/62 ,  F24F11/38 ,  G05D23/19 ,  G08C17/00 ,  G08C17/02 ,  H04W4/38 ,  F24F11/56 ,  F24F11/61 ,  F24F110/10 ,  H04W4/33

Abstract: A thermostat for transmitting data wirelessly to a controller in a building includes a temperature sensor, a processing circuit, and a wireless radio. The processing circuit is configured to receive a measured temperature value from the temperature sensor, determine a current temperature error based on the current measured temperature value and a setpoint temperature, and determine whether a difference between the current temperature error and a previous temperature error is greater than an error threshold. The processing circuit is configured to determine whether a minimum amount of time has passed since transmitting a previous measured temperature value and transmit the current measured temperature value to the controller via the wireless transmitter in response to determining that both the difference between the current temperature error and the previous temperature error is greater than the error threshold and the minimum amount of time has passed since transmitting a temperature value.

公开(公告)号：US20180356111A1

公开(公告)日：2018-12-13

申请号：US15618492

申请日：2017-06-09

Applicant: Johnson Controls Technology Company

Inventor： Timothy I. Salsbury ,  Carlos Felipe Alcala Perez ,  Homero L. Noboa

IPC: F24F11/00

CPC classification number: F24F11/30 ,  F24F11/38 ,  F24F11/56 ,  F24F11/61 ,  F24F11/62 ,  F24F2110/10 ,  G05D23/1905 ,  G08C17/00 ,  G08C17/02 ,  H04W4/33 ,  H04W4/38

Abstract: A thermostat for transmitting data wirelessly to a controller in a building includes a temperature sensor, a processing circuit, and a wireless radio. The processing circuit is configured to receive a measured temperature value from the temperature sensor, determine a current temperature error based on the current measured temperature value and a setpoint temperature, and determine whether a difference between the current temperature error and a previous temperature error is greater than an error threshold. The processing circuit is configured to determine whether a minimum amount of time has passed since transmitting a previous measured temperature value and transmit the current measured temperature value to the controller via the wireless transmitter in response to determining that both the difference between the current temperature error and the previous temperature error is greater than the error threshold and the minimum amount of time has passed since transmitting a temperature value.

公开(公告)号：US09696073B2

公开(公告)日：2017-07-04

申请号：US14572375

申请日：2014-12-16

Applicant: Johnson Controls Technology Company

Inventor： Homero L. Noboa ,  Andrew J. Boettcher ,  Saman Beyhaghi

IPC: F25B49/02 ,  F25B49/00 ,  F25B13/00 ,  F25B25/00

CPC classification number: F25B49/005 ,  F25B13/00 ,  F25B25/005 ,  F25B2339/047 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/21151 ,  F25B2700/21152

Abstract: A fault detection and diagnostics (FDD) system is provided for a refrigeration circuit having an evaporator and a compressor configured to circulate a refrigerant through the evaporator. The FDD system includes a communications interface configured to receive a measurement of a thermodynamic property affected by the refrigeration circuit and a processing circuit having a processor and memory. The processing circuit is configured to use the measured thermodynamic property to determine an expected suction entropy of the refrigerant at a suction of the compressor, use the expected suction entropy to determine an expected thermodynamic discharge property of the refrigerant at a discharge of the compressor, determine an actual thermodynamic discharge property of the refrigerant at the discharge of the compressor, and detect a fault in the refrigeration circuit by comparing the expected thermodynamic discharge property with the actual thermodynamic discharge property.

公开(公告)号：US11487303B2

公开(公告)日：2022-11-01

申请号：US16735528

申请日：2020-01-06

Applicant: Johnson Controls Technology Company

Inventor： Dinesh Trikha ,  Homero L. Noboa ,  Hunter R. Hobgood ,  Camille M. Aucoin

IPC: F16K31/02 ,  G05D7/01 ,  F24F11/63 ,  F24F11/74 ,  F16K37/00 ,  G01F25/10 ,  G01F1/00 ,  G05D7/06

Abstract: An actuator of an environmental control system of a building including a motor and a drive device driven by the motor and configured to drive a valve within a range of positions. The actuator includes one or more printed circuit boards including one or more processing circuits configured to obtain a raw measurement data set from transducers and generate a flow signal based on the raw measurement data set. The flow signal indicates a flow rate of a fluid through a conduit. The one or more processing circuits are configured to determine an actuator position setpoint based on a flow rate setpoint and the flow signal and operate the motor to drive the drive device to the actuator position setpoint. The motor, the drive device, and the one or more printed circuit boards are located within a common device chassis.

公开(公告)号：US11487259B2

公开(公告)日：2022-11-01

申请号：US16659155

申请日：2019-10-21

Applicant: Johnson Controls Technology Company

Inventor： Homero L. Noboa

IPC: G05B19/042 ,  F24F11/30 ,  F24F11/89 ,  F24F11/32 ,  F24F11/62 ,  F24F11/56 ,  F24F11/54 ,  F24F11/64 ,  F24F11/46 ,  F24F110/00

Abstract: A building management system that includes a plurality of slave devices, a remote server comprising a slave device configuration database, and a master controller. The master controller is configured to receive slave device configuration information stored in the slave device configuration database. The slave device configuration information includes at least one of cooling tower configuration parameters, chilled water pump configuration parameters, condenser water pump configuration parameters, air handling unit configuration parameters, rooftop air handling unit configuration parameters, variable air volume unit configuration parameters, chiller device configuration parameters, a rated device capacity, a rated device power, and a rated device speed. The master controller is further configured to control the plurality of slave devices using the slave device configuration information.

公开(公告)号：US11237576B2

公开(公告)日：2022-02-01

申请号：US15668264

申请日：2017-08-03

Applicant: Johnson Controls Technology Company

Inventor： Homero L. Noboa ,  Kirk H. Drees ,  Vivek V. Gupta ,  Mark T. Fischbach

IPC: F24F11/00 ,  G05D23/19 ,  G06F3/0481 ,  F24F11/30 ,  F24F11/62 ,  G06F3/0484 ,  G05B23/02 ,  F24F11/52

Abstract: A building management system includes a communications interface connected to HVAC devices, a device identifier configured to identify the HVAC devices, a fault detector configured to detect a fault condition in the identified devices, and a causal relationship template retriever configured to retrieve a fault causation template of system parameters specific to the fault condition. The building management system further includes a status requestor configured to retrieve operating data from the identified devices and a user interface generator. The user interface generator is configured to populate the system parameters of the fault causation template with the retrieved operating data and transmit a signal to display a user interface with the populated fault causation template on a display screen.

公开(公告)号：US20210018214A1

公开(公告)日：2021-01-21

申请号：US16516070

申请日：2019-07-18

Applicant: Johnson Controls Technology Company

Inventor： Jack A. Peterson ,  Kirk H. Drees ,  Brennan H. Fentzlaff ,  Homero L. Noboa ,  Brett M. Lenhardt

IPC: F24F11/84 ,  F16K1/52 ,  F16K31/04

Abstract: A system for controlling a flow rate of a fluid through a valve is provided. The system includes a valve and an actuator. The actuator includes a motor and a drive device that is coupled to the valve for driving the valve between multiple positions. The system further includes a flow rate sensor and a controller that is communicably coupled with the flow rate sensor and the motor. The controller is configured to receive a first flow rate setpoint, determine a first actuator position setpoint using a proportional variable deadband control technique based on the first flow rate setpoint and a flow rate measurement, and receive a second flow rate setpoint. In response to a determination that certain low flow criteria are satisfied, the controller is configured to determine a second actuator position setpoint using the proportional variable deadband control technique based on a low flow compensation setpoint.

公开(公告)号：US20200208864A1

公开(公告)日：2020-07-02

申请号：US16235316

申请日：2018-12-28

Applicant: Johnson Controls Technology Company

Inventor： Aaron D. Wagner ,  Chaitra Shastry ,  Jameel Ahmed ,  Homero L. Noboa ,  Camille M. Aucoin ,  Hunter R. Hobgood ,  Dinesh Trikha

IPC: F24F11/523 ,  G05B19/042

Abstract: A controller includes a plurality of configurable input ports, a plurality of configurable output ports, and a configuration circuit. The configuration circuit is configured to provide a graphical user interface configured to facilitate a user in inputting an equipment description, determine a controller configuration based on the equipment description, configure the plurality of configurable input ports in accordance with the controller configuration, configure the plurality of configurable output ports in accordance with the controller configuration, and enable a set of control logic based on the controller configuration. The controller also includes an online control circuit configured to receive inputs via the plurality of configurable input ports, generate outputs based on the inputs and the set of control logic, and provide the outputs to building equipment via the plurality of configurable output ports.

公开(公告)号：US20200072373A1

公开(公告)日：2020-03-05

申请号：US16115508

申请日：2018-08-28

Applicant: Johnson Controls Technology Company

Inventor： Homero L. Noboa ,  Brennan Fentzlaff ,  Camille M. Aucoin ,  Carlos Felipe Alcala Perez

IPC: F16K31/04 ,  F16K37/00 ,  G05B6/02

Abstract: A pressure disturbance rejection valve assembly is provided. The valve assembly includes a valve, a flow rate sensor, and an actuator. The actuator includes a motor, a drive device configured to be driven by the motor and coupled to the valve for driving the valve within a range of positions, and a position sensor configured to measure a rotational position of the drive device. The actuator further includes a communications mechanism configured to receive a flow rate setpoint and a processing circuit. The processing circuit is configured to determine an actuator position setpoint using a feedback control mechanism based on the flow rate setpoint and the flow rate measurement, operate the motor to drive the drive device to the actuator position setpoint, detect a fault condition based at least in part on the rotational position measurement or the flow rate measurement, and perform a fault mitigation action in response to detection of the fault condition.