Field controller for a building management system
AssigneeJohnson Controls Tyco IP Holdings LLP
InventorsBoudhayan Bandyopadhyay, Saikat Patra, Khalil B. Mujawar, Neeraj S. Kale
Life of this patent
Estimating the term…
Abstract
A controller for building equipment in a building management system, the controller including a processing circuit configured to receive a field signal from the building equipment on an input port of the controller, determine a type of the field signal, and update a control logic comprising instructions for reading the field signal by tagging within the control logic the input port with the determined type of the field signal.
Claims20
A controller for building equipment in a building management system, the controller comprising a processing circuit configured to:
- receive a field signal from the building equipment on an input port of the controller;
- determine a type of the field signal, including generate a first and second output voltage based on the field signal, wherein the first output voltage is proportional to a voltage drop across a first resistor of the controller, and the second output voltage is proportional to a voltage drop across a second resistor of the controller, wherein the first resistor and the second resistor are distinct from each other;
- compare the first output voltage and the second output voltage;
- and
- update a control logic comprising instructions for reading the field signal by tagging within the control logic the input port with the determined type of the field signal.
A method for updating a control logic for a controller in a building management system, the method comprising the steps of:
- receiving, through an input port of the controller, a field signal from a piece of building equipment;
- determining, by the controller, a type of the field signal, including generating, by the controller, a first and second output voltage based on the field signal, wherein the first output voltage is proportional to a voltage drop across a first resistor of the controller, and the second output voltage is proportional to a voltage drop across a second resistor of the controller, wherein the first resistor and the second resistor are distinct from each other;
- and
- updating, by the controller, the control logic by tagging the input port with the determined type of the field signal.
A system for updating control logic of a controller comprising:
- a signal processing unit configured to:
- receive a field signal from an input port of the controller;
- and
- generate a first and second output based on the field signal;
- and
- a processing circuit communicably coupled to the signal processing unit configured to;
- determine a type of the field signal by comparing a first output voltage and a second output voltage, wherein the first and second output voltages are a first output voltage corresponding to a voltage drop across a first resistor of the signal processing unit and a second output voltage corresponding to a voltage drop across a second resistor of the signal processing unit, wherein the first resistor and the second resistor are distinct from each other;
- and
- update a control logic comprising instructions for reading sensed data from the field signal by tagging the input port of the controller with the determined type of the field signal.
Dependencies are inferred from the claim text.