US 11,920,816 B2
HVAC switchable communication bus and power bus control board systems and methods
Shaun B. Atchison, Wichita, KS (US); and Brian D. Rigg, Douglass, KS (US)
Assigned to Johnson Controls Tyco IP Holdings LLP, Milwaukee, WI (US)
Filed by Johnson Controls Tyco IP Holdings LLP, Milwaukee, WI (US)
Filed on Jun. 13, 2022, as Appl. No. 17/839,243.
Application 17/839,243 is a continuation of application No. 17/181,972, filed on Feb. 22, 2021, granted, now 11,359,832.
Application 17/181,972 is a continuation of application No. 15/892,835, filed on Feb. 9, 2018, granted, now 10,928,088, issued on Feb. 23, 2021.
Claims priority of provisional application 62/584,544, filed on Nov. 10, 2017.
Prior Publication US 2023/0031216 A1, Feb. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F24F 11/63 (2018.01); G05B 15/02 (2006.01)
CPC F24F 11/63 (2018.01) [G05B 15/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control board of a heating, ventilation, and air conditioning (HVAC) system, comprising:
a microcontroller programmed to control operation of equipment in the HVAC system;
a plurality of communication buses communicatively coupled to the microcontroller, wherein the plurality of communication buses is configured to transmit data in accordance with communication protocols different from one another; and
a switchable input/output (I/O) port communicatively coupled to the microcontroller via a switchable communication bus, wherein the microcontroller is programmed to communicatively couple the switchable communication bus and a selected communication bus of the plurality of communication buses based on a target communication protocol used by the equipment.
 
8. The control board of claim 1, comprising:
a plurality of power buses configured to transmit electrical power with different power parameters;
a switching device electrically coupled to the plurality of power buses, wherein the switching device is configured to electrically isolate the plurality of power buses; and
a switchable power bus electrically coupled to the switching device and to the switchable I/O port.
 
15. A control board of a building environmental management system, comprising:
a microcontroller programmed to control operation of equipment in the building environmental management system;
a first power bus configured to receive and transmit first electrical power with first power parameters;
a second power bus configured to receive and transmit second electrical power with second power parameters, wherein the first power parameters and the second power parameters are different from one another;
a first communication bus configured to transmit data in accordance with a first communication protocol;
a second communication bus configured to transmit data in accordance with a second communication protocol, wherein the first communication protocol and the second communication protocol are different from one another; and
a switchable input/output (I/O) port communicatively coupled to the microcontroller via a switchable communication bus, wherein the switchable I/O port is configured to couple to the equipment,
wherein, based on a target communication protocol of the equipment, the microcontroller is programmed to selectively communicatively couple the switchable communication bus and the first communication bus and to selectively communicatively couple the switchable communication bus and the second communication bus.