# US 10,873,999 B2 · Environment controller and method for proportionally adjusting the light intensity of several lighting devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,999 B2 - Document ID: US10873999B2 - Status: Granted - Kind: B2 - Application number: 16/673,996 - Filed: 2019-11-05 - Published: 2020-02-27 - Granted: 2020-12-22 - Earliest claimed: 2018-08-09 - Assignees: Distech Controls Inc. - Applicants: Distech Controls Inc. - Inventors: Dominic Gagnon - Web page: https://patentgrep.com/patent/US10873999B2 ## CPC - H05B 39/042: {by measuring the incident light} - H05B 45/10: Controlling the intensity of the light - H05B 47/10: Controlling the light source - H05B 47/165: following a pre-assigned programmed sequence; Logic control [LC] - H05B 47/19: via wireless transmission - H05B 47/196: {characterised by user interface arrangements} - H05B 47/1965: {using handheld communication devices} - Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract Environment controller and method for proportionally adjusting a respective light intensity of a plurality of lighting devices. The environment controller determines a current light intensity for each one of the plurality of lighting devices; and determines a current average light intensity by calculating the average of the current light intensities. The environment controller determines a target average light intensity; and determines a new light intensity for each one of the plurality of lighting devices, by proportionally adjusting the light intensity of each one of the plurality of lighting devices from its respective current light intensity to its respective new light intensity, so that the average of the new light intensities is equal to the target average light intensity. The current and new light intensities may be expressed as a percentage; and the target average light intensity received from a computing device or via a user interaction with the environment controller. ## Claims ### Claim 1 An environment controller for proportionally adjusting a respective light intensity of a plurality of lighting devices, the environment controller comprising: a communication interface; and a processing unit for: determining a current light intensity for each one of the plurality of lighting devices; determining a current average light intensity of the plurality of lighting devices by calculating the average of the current light intensities; receiving a target average light intensity of the plurality of lighting devices from a computing device via the communication interface or from a user via a user interface of the environment controller; and calculating a new light intensity for each one of the plurality of lighting devices by proportionally adjusting the light intensity of each one of the plurality of lighting devices from its respective current light intensity to its respective new light intensity so that the average of the new light intensities is equal to the target average light intensity of the plurality of lighting devices, the proportional adjustment being performed by an algorithm which calculates each new light intensity based at least on the corresponding current light intensity, the current average light intensity of the plurality of lighting devices and the target average light intensity of the plurality of lighting devices. ### Claim 2 (depends on 1) The environment controller of claim 1, wherein the processing unit further transmits the new light intensities to one or more light controller via the communication interface, the one or more light controller controlling the plurality of lighting devices. ### Claim 3 (depends on 1) The environment controller of claim 1, wherein the current light intensity and the new light intensity are expressed as a percentage for each one of the plurality of lighting devices. ### Claim 4 (depends on 3) The environment controller of claim 3, wherein the target average light intensity At is lower than the current average light intensity Ac and the adjustment from the current light intensity Ic to the new light intensity In is calculated as follows: In=Ic+Ic*(At−Ac)/Ac. ### Claim 5 (depends on 1) The environment controller of claim 1, wherein the processing unit transmits the current average light intensity to the computing device via the communication interface; and the target average light intensity is received from the computing device via the communication interface. ### Claim 6 (depends on 1) The environment controller of claim 1, wherein the processing unit displays the current average light intensity on a display of the environment controller; and the target average light intensity is received from the user via the user interface of the environment controller. ### Claim 7 A method for proportionally adjusting a respective light intensity of a plurality of lighting devices, the method comprising: determining by a processing unit of an environment controller a current light intensity for each one of the plurality of lighting devices; determining by the processing unit of the environment controller a current average light intensity of the plurality of lighting devices by calculating the average of the current light intensities; receiving by the processing unit of the environment controller a target average light intensity of the plurality of lighting devices from a computing device via a communication interface of the environment controller or from a user via a user interface of the environment controller; and calculating by the processing unit of the environment controller a new light intensity for each one of the plurality of lighting devices by proportionally adjusting the light intensity of each one of the plurality of lighting devices from its respective current light intensity to its respective new light intensity so that the average of the new light intensities is equal to the target average light intensity of the plurality of lighting devices, the proportional adjustment being performed by an algorithm which calculates each new light intensity based at least on the corresponding current light intensity, the current average light intensity of the plurality of lighting devices and the target average light intensity of the plurality of lighting devices. ### Claim 8 (depends on 7) The method of claim 7, wherein the environment controller comprises the communication interface and the method further comprises transmitting by the processing unit of the environment controller via the communication interface of the environment controller the new light intensities to one or more light controller, the one or more light controller controlling the plurality of lighting devices. ### Claim 9 (depends on 7) The method of claim 7, wherein the current light intensity and the new light intensity are expressed as a percentage for each one of the plurality of lighting devices. ### Claim 10 (depends on 9) The method of claim 9, wherein the target average light intensity At is lower than the current average light intensity Ac and the adjustment from the current light intensity Ic to the new light intensity In is calculated as follows: In=Ic+Ic*(At−Ac)/Ac. ### Claim 11 (depends on 7) The method of claim 7, further comprising transmitting by the processing unit of the environment controller the current average light intensity to the computing device via the communication interface of the environment controller; and the target average light intensity is received from the computing device via the communication interface of the environment controller. ### Claim 12 (depends on 7) The method of claim 7, further comprising displaying by the processing unit of the environment controller the current average light intensity on a display of the environment controller; and the target average light intensity is received from the user via the user interface of the environment controller. ### Claim 13 A non-transitory computer program product comprising instructions executable by a processing unit of an environment controller, the execution of the instructions by the processing unit of the environment controller providing for adjusting a respective light intensity of a plurality of lighting devices by: determining by a processing unit of an environment controller a current light intensity for each one of the plurality of lighting devices; determining by the processing unit of the environment controller a current average light intensity of the plurality of lighting devices by calculating the average of the current light intensities; receiving by the processing unit of the environment controller a target average light intensity of the plurality of lighting devices from a computing device via a communication interface of the environment controller or from a user via a user interface of the environment controller; and calculating by the processing unit of the environment controller a new light intensity for each one of the plurality of lighting devices by proportionally adjusting the light intensity of each one of the plurality of lighting devices from its respective current light intensity to its respective new light intensity so that the average of the new light intensities is equal to the target average light intensity of the plurality of lighting devices, the proportional adjustment being performed by an algorithm which calculates each new light intensity based at least on the corresponding current light intensity, the current average light intensity of the plurality of lighting devices and the target average light intensity of the plurality of lighting devices. ### Claim 14 (depends on 13) The computer program product of claim 13, wherein the current light intensity and the new light intensity are expressed as a percentage for each one of the plurality of lighting devices, the target average light intensity At is lower than the current average light intensity Ac and the adjustment from the current light intensity Ic to the new light intensity In is calculated as follows: In=Ic+Ic*(At−Ac)/Ac. ### Claim 15 A method for proportionally adjusting a respective set point of a plurality of controlled appliances, the method comprising: determining by a processing unit of an environment controller a current set point for each one of the plurality of controlled appliances; determining by the processing unit of the environment controller a current average set point of the plurality of controlled appliances by calculating the average of the current set points; processing by the processing unit of the environment controller the current average set point of the plurality of controlled appliances; receiving by the processing unit of the environment controller a target average set point of the plurality of controlled appliances from a computing device via a communication interface of the environment controller or from a user via a user interface of the environment controller; and calculating by the processing unit of the environment controller a new set point for each one of the plurality of controlled appliances by proportionally adjusting the set point of each one of the plurality of controlled appliances from its respective current set point to its respective new set point so that the average of the new set points is equal to the target average set point of the plurality of controlled appliances, the proportional adjustment being performed by an algorithm which calculates each new set point based at least on the corresponding current set point, the current average set point of the plurality of controlled appliances and the target average set point of the plurality of controlled appliances. ### Claim 16 (depends on 15) The method of claim 15, wherein the current set point and the new set point are expressed as a percentage for each one of the plurality of controlled appliances. ### Claim 17 (depends on 16) The method of claim 16, wherein the target average set point At is lower than the current average set point Ac and the adjustment from the current set point SPc to the new set point SPn is calculated as follows: SPn=SPc+SPc*(At−Ac)/Ac. ### Claim 18 (depends on 15) The method of claim 15, further comprising transmitting by the processing unit of the environment controller the current average set point to the computing device via the communication interface of the environment controller; and the target average set point is received from the computing device via the communication interface of the environment controller. ### Claim 19 (depends on 15) The method of claim 15, further comprising displaying by the processing unit of the environment controller the current average set point on a display of the environment controller; and the target average set point is received from the user via the user interface of the environment controller.