公开(公告)号：US20200313925A1

公开(公告)日：2020-10-01

申请号：US16366020

申请日：2019-03-27

Applicant: Johnson Controls Technology Company

Inventor： Japneet Singh ,  Ishmeet Bhatia ,  Manu Garg ,  Vikas Sharma

IPC: H04L12/28 ,  H04L12/403 ,  H04L12/24

Abstract: A building automation system includes a plurality of subnets, an active broadcast management device configured on at least one of the subnets, a pool of virtual devices communicably connected to the active broadcast management device, each of the virtual devices in the pool of virtual devices configured to store a broadcast distribution table (BDT), one or more processors, and memory coupled to the one or more processors and storing instructions. When executed by the one or more processors, the instructions cause the one or more processors to transmit a health status message to each available virtual device in the pool of virtual devices, receive a health status response from each of the available virtual devices, and select, according to the health status responses, at least one of the virtual devices from among the available virtual devices as a backup virtual broadcast management device to the active broadcast management device.

公开(公告)号：US20200309434A1

公开(公告)日：2020-10-01

申请号：US16901751

申请日：2020-06-15

Applicant: Johnson Controls Technology Company

Inventor： Jay C. Walser ,  William F. McQuade

IPC: F25B49/02 ,  F25B41/06 ,  F25B49/00

Abstract: The present disclosure relates to a refrigeration circuit that includes a controller communicatively coupled to a compressor, an expansion valve, and a sensor of the refrigeration circuit. The controller may activate the compressor and actuate the expansion valve such that the compressor is active while the expansion valve is closed. The controller may also measure a pressure of a refrigerant in the refrigeration circuit using the sensor while the compressor is active and the expansion valve is closed. Additionally, the controller may determine whether a refrigerant leak exists based on a maximum measurement time being reached or a time difference between a first time associated with the compressor being active while the expansion valve is closed and a second time associated with the measured pressure falling below a threshold value.

公开(公告)号：US20200309402A1

公开(公告)日：2020-10-01

申请号：US16366164

申请日：2019-03-27

Applicant: Johnson Controls Technology Company

Inventor： Anthony J. Reardon ,  Praveen M. Gotakhindi ,  Sriram Ramanujam ,  Karan Garg

IPC: F24F11/871 ,  F24F11/88

Abstract: A heating, ventilation, and/or air conditioning (HVAC) unit includes a heater housing having a first side wall, a second side wall opposing the first side wall, and a ceiling extending between the first side wall and second side wall. The HVAC unit also includes a first mounting rail disposed across the first side wall at a first distance from the ceiling, and a second mounting rail disposed across the second side wall at a second distance from the ceiling. The first distance is greater than the second distance. The HVAC unit also includes a heating element assembly coupled to the first and second mounting rails and having a planar heating interface extending from the first mounting rail to the second mounting rail.

公开(公告)号：US20200309102A1

公开(公告)日：2020-10-01

申请号：US16372145

申请日：2019-04-01

Applicant: Johnson Controls Technology Company

Inventor： Kirk P. Henderson ,  John T. Pierson ,  Julie Ahl ,  Kevin A. Weiss

IPC: F03G7/06 ,  F24F13/14

Abstract: An actuator system includes a shaft hub having a shaft and one or more rotation arms coupled to the shaft, one or more shape memory alloy springs coupled to the one or more rotation arms, and as a voltage source configured to apply a voltage to the one or more shape memory alloy springs. The voltage causes the one or more shape memory alloy springs to change in size or shape, thereby applying a force to the one or more rotation arms and causing the shaft hub to rotate. The actuator system also includes a processing circuit configured to receive an indication of a desired incremental rotation for the shaft hub and apply a voltage corresponding to the desired incremental rotation to the one or more shape memory alloy springs, causing the shaft and the shaft hub to rotate about a central axis.

公开(公告)号：US20200304332A1

公开(公告)日：2020-09-24

申请号：US16895886

申请日：2020-06-08

Applicant: Johnson Controls Technology Company

Inventor： Youngchoon Park ,  Sudhi R. Sinha

IPC: H04L12/28 ,  G06F16/901

Abstract: A building system including one or more memory devices configured to store instructions thereon, the instructions causing one or more processors to generate a space graph based on building data, generate a control algorithm based on the space graph and operate one or more pieces of building equipment based on the control algorithm, and receive new building data from one or more building data sources. The instructions cause the one or more processors to generate one or more new relationships between a first entity of entities and a second entity of the entities, update the space graph with the new relationship by causing the space graph to store a new edge between a first node of nodes representing the first entity and a second node of the nodes representing the second entity, and update the control algorithm based on the new edge of the updated space graph.

公开(公告)号：US20200301408A1

公开(公告)日：2020-09-24

申请号：US16899220

申请日：2020-06-11

Applicant: Johnson Controls Technology Company

Inventor： MOHAMMAD N. ELBSAT ,  MICHAEL J. WENZEL ,  ROBERT D. TURNEY

IPC: G05B23/02 ,  G05B19/042 ,  G06N3/08

Abstract: A model predictive maintenance (MPM) system for building equipment includes one or more processing circuits having one or more processors and memory. The memory store instructions that, when executed by the one or more processors, cause the one or more processors to perform operations including estimating a degradation state of the building equipment, using a degradation impact model to predict an amount of one or more input resources consumed by the building equipment to produce one or more output resources based on the degradation state of the building equipment, generating a maintenance schedule for the building equipment based on the amount of the one or more input resources predicted by the degradation impact model, and initiating a maintenance activity for the building equipment in accordance with the maintenance schedule.

公开(公告)号：US20200292192A1

公开(公告)日：2020-09-17

申请号：US16591205

申请日：2019-10-02

Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY

Inventor： Andrew Michael BOYD ,  Madhuka Manuranga Jayarathne ,  Thomas D. Chase ,  Theresa N. Gillette

IPC: F24F11/39 ,  F24F11/52 ,  F24F11/65 ,  F24F11/64 ,  B01D46/00 ,  B01D46/42 ,  B01D46/46

Abstract: A climate control unit (e.g., for a residential building) may include a heat exchanger, a blower that circulates air from a return duct, across the heat exchanger, to a supply duct, and a filter that cleans the air before entering the heat exchanger. The effectiveness and/or efficiency of the filter may decrease as the filter collects particles. The climate control unit may include a controller configured to set a baseline measurement according to measurements of a blower property after a reset event. The controller may be configured to measure a deviation of the blower property from the baseline measurement of the blower property. The controller may be configured to generate a status notification in response to the deviation satisfying a threshold. The status notification may indicate that the filter should be changed.

公开(公告)号：US10767886B2

公开(公告)日：2020-09-08

申请号：US15900459

申请日：2018-02-20

Applicant: Johnson Controls Technology Company

Inventor： Anas W. I. Alanqar ,  Matthew J. Ellis ,  Michael J. Wenzel

IPC: F24F11/63 ,  F24F11/00 ,  G05B13/02

Abstract: A building management system includes building equipment, a sensor, and a saturation detector. The building equipment is configured to operate at an operating capacity to drive a variable state or condition of a building zone toward a setpoint. The operating capacity and the setpoint vary over time. The sensor is in the building zone and is configured to provide a zone measurement of the variable state or condition of the building zone. The saturation detector is configured to determine whether the operating capacity is in a non-transient region for a threshold amount of a time period upon determining that an error for the building zone exists for the time period, and, in response to a determination that the operating capacity is in the non-transient region for at least the threshold amount of the time period, indicate the time period as a saturation period.

公开(公告)号：US10761516B2

公开(公告)日：2020-09-01

申请号：US16153266

申请日：2018-10-05

Applicant: Johnson Controls Technology Company

Inventor： Sudhi Sinha ,  Youngchoon Park

IPC: H04L12/26 ,  G05B19/418 ,  G05B19/4065 ,  G05B19/048 ,  G05B15/02 ,  G05B19/042 ,  H04L12/24 ,  H04L12/28

Abstract: A building device for a building management system (BMS) includes a processing circuit configured to receive one or more health messages from one or more other building devices. The processing circuit is configured to update an existing health message stored in a memory of the building device based on the one or more health messages by updating a message list of the existing health message with message list data of the one or more health messages, updating a sick node list of the existing health message based on the updated message list, and updating a sick node matrix of the existing health message based on the updated sick node list and the received one or more health messages. The processing circuit is configured to communicate the updated health message to at least one of the one or more other building devices.

公开(公告)号：US10760809B2

公开(公告)日：2020-09-01

申请号：US15983899

申请日：2018-05-18

Applicant: Johnson Controls Technology Company

Inventor： Theresa N. Gillette ,  Shaun B. Atchison ,  Jonathan A. Burns

IPC: F24F11/46 ,  F24F11/64 ,  F24F11/523 ,  F24F11/65 ,  G05B19/042 ,  F24F11/57 ,  F24F140/60 ,  F24F110/10 ,  F24F120/12 ,  F24F120/14 ,  F24F120/20 ,  F24F140/50

Abstract: A building controller for a building that includes a first zone and a second zone. The building controller includes a processing circuit configured to store zone modes for the building. The zone modes include zone activity modes each associated with an occupant activity within the zone and one or more environmental settings. The processing circuit is configured to receive an indication to operate the first zone in a first zone mode of the zone modes and an indication to operate the second zone in a second zone mode of the zone modes. The processing circuit is configured to operate one or more pieces of building equipment based on the first zone mode and operate the one or more pieces of building equipment based on the second zone mode.