# US 12,594,813 B2 · Systems and methods for dynamic climate control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,594,813 B2 - Document ID: US12594813B2 - Status: Granted - Kind: B2 - Application number: 18/089,675 - Filed: 2022-12-28 - Published: 2024-02-29 - Granted: 2026-04-07 - Earliest claimed: 2022-08-31 - Assignees: Rivian IP Holdings, LLC - Applicants: Rivian IP Holdings, LLC - Inventors: Paulo Lucena Kreppel Paes; Dewashish Prashad; Ean Joshua Hall; Ajay Panekkad; Siddartha Gangula - Web page: https://patentgrep.com/patent/US12594813B2 ## CPC - B60H 1/00742: {by detection of the vehicle occupants' presence; by detection of conditions relating to the body of occupants, e.g. using radiant heat detectors} - B60H 1/00764: {the input being a vehicle driving condition, e.g. speed (B60H1/00828, B60H1/00864 take precedence)} - B60H 1/00785: {by the detection of humidity or frost} - B60S 1/026: {using electrical means} - B60S 1/54: using gas, e.g. hot air - B60H 1/00835: {Damper doors, e.g. position control (construction or arrangement of damper doors B60H1/00664; B60H1/00864 takes precedence)} - B60H 1/3207: {for minimizing the humidity of the air} - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES - B60S: SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR ## Abstract Methods and systems are provided for managing cabin conditions. A fogging metric and a breath temperature metric are determined. A control signal response is generated based on the fogging metric and the breath temperature metric. The system facilitates modification to the operation control of the at least one climate control device based on the control signal response. ## Claims ### Claim 1 A method comprising: determining, using control circuitry, a first response based on a fogging metric for an interior of a vehicle; determining, using the control circuitry, a second response based on a breath temperature metric associated with one or more passengers within the interior based on a radiant temperature, an air temperature for the interior, and a convection metric for the interior, wherein the radiant temperature is based on a windshield temperature and a cabin temperature; generating, using the control circuitry, and based on a maximum response among the first response and the second response, a control signal response to modify an operational control of at least one climate control device associated with the vehicle; and facilitating modification to the operational control of the at least one climate control device based on the control signal response. ### Claim 2 (depends on 1) The method of claim 1, wherein the fogging metric is based on: a relative humidity corresponding to a windshield of the vehicle; a temperature corresponding to the windshield; a solar flux corresponding to the windshield; and a blower duty cycle. ### Claim 3 (depends on 1) The method of claim 1, wherein determining the fogging metric is based on a dewpoint temperature corresponding to a windshield, a temperature corresponding to the windshield, and a temperature gradient corresponding to the windshield, and wherein the temperature gradient is determined based on a solar flux and a cabin air flow rate. ### Claim 4 (depends on 1) The method of claim 1, wherein generating the control signal response comprises classifying the fogging metric based on a predetermined classification scheme. ### Claim 5 (depends on 1) The method of claim 1, wherein: generating the control signal response comprises determining a response metric based on a functional relationship with the fogging metric, wherein the functional relationship is exponential; and the operational control comprises a blower duty cycle, a heater temperature, a compressor speed, or an air system duct door position, or combinations thereof. ### Claim 6 (depends on 1) The method of claim 1, wherein: the breath temperature metric comprises a difference between a target breath temperature and an estimated breath temperature; and generating the control signal response comprises: determining a heat demand metric; determining a heating rate; and determining at least one of a blower duty cycle or a target air discharge temperature, or combinations thereof. ### Claim 7 (depends on 1) The method of claim 1, wherein facilitating the modification to the operational control comprises controlling at least one of a blower, a resistance heater, a compressor, or an actuated duct door, or combinations thereof. ### Claim 8 (depends on 1) The method of claim 1, wherein: generating the control signal response comprises, for a first climate control device of the at least one climate control device: comparing the first response to the second response to determine the maximum response. ### Claim 9 (depends on 1) The method of claim 1, further comprising receiving a plurality of sensor signals from a plurality of sensors, wherein the plurality of sensors comprises: at least one temperature sensor; at least one relative humidity sensor; a solar flux sensor; and a vehicle speed sensor. ### Claim 10 A system comprising: at least one climate control device of a vehicle; control circuitry configured to: determine a first response based on a fogging metric for an interior of the vehicle; determine a second response based on a breath temperature metric associated with one or more passengers within the interior based on a radiant temperature, an air temperature for the interior, and a convection metric for the interior, wherein the radiant temperature is based on a windshield temperature and a cabin temperature; generate, based on a maximum response among the first response and the second response, a control signal response to modify an operational control of the at least one climate control device; and facilitate modification to the operational control of the at least one climate control device based on the control signal response. ### Claim 11 (depends on 10) The system of claim 10, wherein the control circuitry is further configured to determine the fogging metric by: determining a relative humidity corresponding to a windshield; determining a temperature corresponding to the windshield; determining a solar flux corresponding to the windshield; and determining a blower duty cycle. ### Claim 12 (depends on 10) The system of claim 10, wherein the control circuitry is further configured to determine the fogging metric based on a dewpoint temperature corresponding to a windshield, a temperature corresponding to the windshield, and a temperature gradient corresponding to the windshield, and wherein the temperature gradient is determined based on a solar flux and a cabin air flow rate. ### Claim 13 (depends on 10) The system of claim 10, wherein: the control circuitry is further configured to generate the control signal response based on a response having a functional relationship with the fogging metric, wherein the functional relationship is exponential; and the response comprises a blower duty cycle, a heater temperature, a compressor speed, or an air system duct door position, or combinations thereof. ### Claim 14 (depends on 10) The system of claim 10, wherein: the breath temperature metric comprises a difference between a target breath temperature and an estimated breath temperature; and the control circuitry is further configured to generate the control signal response based on the fogging metric and on the breath temperature metric by: determining a heat demand metric; determining a heating rate; and determining at least one of a blower duty cycle or a target air discharge temperature, or combinations thereof. ### Claim 15 (depends on 10) The system of claim 10, wherein the at least one climate control device comprises at least one of a blower, a resistance heater, a compressor, or an actuated duct door, or combinations thereof. ### Claim 16 (depends on 10) The system of claim 10, wherein: the control circuitry is further configured to generate the control signal response, for a first climate control device of the at least one climate control device, by: comparing the first response to the second response to determine the maximum response. ### Claim 17 (depends on 10) The system of claim 10, further comprising a plurality of sensors, wherein the control circuitry is further configured to receive a plurality of sensor signals from the plurality of sensors, and wherein the plurality of sensors comprises: at least one temperature sensor; at least one relative humidity sensor; a solar flux sensor; and a vehicle speed sensor. ### Claim 18 A non-transitory computer-readable medium having instructions encoded thereon that when executed by control circuitry cause the control circuitry to: determine a first response based on a fogging metric for an interior of a vehicle; determine a second response based on a breath temperature metric associated with one or more passengers within the interior based on a radiant temperature, an air temperature for the interior, and a convection metric for the interior, wherein the radiant temperature is based on a windshield temperature and a cabin temperature; generate, based on a maximum response among the first response and the second response, a control signal response to modify an operational control of at least one climate control device associated with the vehicle; and facilitate modification to the operational control of the at least one climate control device based on the control signal response. ### Claim 19 (depends on 1) The method of claim 1, wherein determining the first response comprises determining a time scale of the first response based on the fogging metric, wherein the time scale affects how quickly the control signal response responds to the fogging metric. ### Claim 20 (depends on 10) The system of claim 10, wherein the control circuitry is further configured to determine the first response by determining a time scale of the first response based on the fogging metric, wherein the time scale affects how quickly the control signal response responds to the fogging metric.