Self-programmable thermostat
Contents
1. LEARNED SETPOINT TEMP AND A LEARNED TIME UPON ENCOUNTERING ANOTHER RECOGNIZED PATTERN OR UPON RECIEVING ANOTHER MANUAL SETPOINT AND OR APPLYING ONE OR MORE OF RULES 1 10 INITIATING A SECOND PERIOD IN WHICH THE TEMP COND UNIT IS CONTROLLED ACCORDINGLY U S Patent Aug 31 2010 Sheet 1 of 3 US 7 784 704 B2 FIG 1 Setpoint Temp Display Actual Temp Display TEMPERATURE CONDITIONING UNIT U S Patent Aug 31 2010 Sheet 2 of 3 US 7 784 704 B2 FIG 2 E TIMER RECEIVE MANUAL MANUAL 24 hr and or 7 day SETPOINTS SETPOINTS MANUALLY ENTERED SETPT TEMP ASSOCIATED WITH 24 hr and or 7 DAY TIMESTAMP COMPARE MANUAL SETPOINT TEMP ACTUAL TO ACTUAL TEMP AND COMFORT ZONE CONTROL TEMP COND TEMPERATRURE UNIT ACCORDINGLY RECOGNIZE PATTERN WITH THE MANUALLY ENTERED SETPT TEMPS AND THEIR CORRESPONDING TIMESTAMPS BASED ON PATTERN AND OR ONE OR MORE OF RULES 1 10 ESTABLISH LEARNED SETPOINT TEMP AND A LEARNED TIME DURING A FIRST PERIOD STARTING AT THE LEARNED TIME COMPARE THE LEARNED SETPOINT TEMP TO THE ACTUAL TEMP AND CONTROL THE TEMP COND UNIT ACCORDINGLY UPON ENCOUNTERING ANOTHER RECOGNIZED PATTERN OR UPON RECIEVING ANOTHER MANUAL SETPOINT AND OR APPLYING ONE OR MORE OF RULES 1 10 INITIATING A SECOND PERIOD IN WHICH THE TEMP COND UNIT IS CONTROLLED ACCORDINGLY U S Patent Aug 31 2010 Sheet 3 of 3 US 7 784 704 B2 SENSING THE ACTUAL ZONE TEMP RECEIVE FIRST MANUALLY ENTERED SETPT TEMP CONTRO2. Such a weekly pattern can then be assigned a learned weekly setpoint temperature and a learned weekly time The learned weekly setpoint tem perature could be for example an average of the three similar manually entered setpoints temperatures spaced 7 days apart or the most recent of the three The learned time could be for example 20 minutes before the three similar timestamps Rule 3 Automatically activate a learned daily setpoint temperature at its learned daily time at its assigned Y value whereby thermostat 10 controls unit 26 based on the learned daily setpoint temperature and continues to do so until inter rupted by one of the following a the user enters a manually entered setpoint temperature adjusts the temp b another learned daily setpoint temperature becomes activated at its learned daily time or c a learned weekly setpoint tempera ture becomes activated at its learned weekly time Rule 4 Automatically activate a learned weekly setpoint temperature at its learned weekly time at its assigned X and Y values whereby thermostat 10 controls unit 26 based on the learned weekly setpoint temperature and continues to do so until interrupted by one ofthe following a the user enters amanually entered setpoint temperature adjusts the temp b a learned daily setpoint temperature becomes activated at its learned daily time but see Rule 5 or c another learned weekly setpoint temperature becomes activated at its learned
3. adjust the thermostat s setpoint temperatures accordingly Thus thermostat 10 can begin operating as a programmed thermo stat rather than just a manual one Since a user s desired temperature setpoints and time pref erences might change for various reasons any manually entered setpoint temperature 16 overrides the currently active setpoint temperature regardless of whether the current set point temperature was manually entered or was automatically activated as a learned setpoint temperature Once overridden another learned setpoint temperature might later be activated at a learned time to return thermostat 10 back to its pro grammed mode Thus thermostat 10 is somewhat of a hybrid manual programmable thermostat in that it can shift auto matically between manual and programmed operation To assign timestamps 48 to manually entered setpoint tem peratures timer 38 can actually comprise one or more timers and or counters In some embodiments for example timer 38 includes a continuously running daily or 24 hour timer that resets itself every 24 hours The time increments can be in minutes seconds or any preferred unit In some cases timer 38 is a continuously operating weekly or 168 hour timer that resets itself every seven days The increments can be in days hours minutes seconds or any preferred unit The weekly timer could also be a seven increment counter that indexes one increment every 24 hours in response to a daily or 24
4. hour timer Timer 38 however is not necessarily synchronized with the actual time of day or day of the week Such synchro nization preferably is not required otherwise the user might have to manually enter or set the correct time and day of the week Inthe case where timer 36 comprises a weekly timer in the form of a 7 increment counter triggered by each 24 hour cycle of a daily timer timestamp 48 might a be a two part number such as X and Y wherein X cycles from 1 to 7 as a weekly timer and Y cycles from Oto 1 439 1 440 minutes per day as a daily timer In this case a timestamp 48 might be 3 and 700 to indicate 700 minutes elapsed during day 3 Whether day 3 represents Monday Tuesday or some other day is immaterial and whether the 700 minute represents 2 00 AM 7 30 PM or some other time of day is also imma terial As one way to provide a programmable thermostat that can operate independently of an actual time of day clock and 20 25 40 45 50 55 60 65 4 to provide thermostat 10 with other functionality micropro cessor 36 can be firmware programmed to execute one or more of the following rules Rule 1 Upon receiving a manually entered setpoint tem perature microprocessor assigns an X and Y timestamp 48 to the manually entered setpoint temperature wherein the timestamp indicates when the setpoint temperature was entered relative to other timestamps The manually entered setpoint temperature and i
5. of some embodiments is to provide a ther mostat that automatically switches from a manual mode to a programmed mode when it recognizes an opportunity to do so Another object of some embodiments is to provide a ther mostat that automatically switches from a programmed mode to a manual mode simply by manually entering a new desired setpoint temperature Another object of some embodiments is to observe and learn the temperature setting habits of a user and automati cally program a thermostat accordingly Another object of some embodiments is to provide a self programming thermostat that not only learns a user s tem perature setting habits but if those habits or temperature setting preferences change over time the thermostat continues learning and will adapt to the new habits and set points as well Another object of some embodiments is to minimize the number of inputs and actions from which a user can choose thereby simplifying the use of a thermostat Another object of some embodiments is to provide a ther mostat that can effectively self program virtually an infinite number of setpoint temperatures and times rather than be limited to a select few number of preprogrammed settings Another object ofsome embodiments is to provide a simple way of clearing programmed settings of a thermostat One or more of these and or other objects of the invention are provided by a thermostat and method that learns the manual temperature setting h
6. time of day 2 entering into the thermostat the current date or day of the week and 3 entering various chosen days times and setpoint temperatures One or more of these steps may need to be repeated in the event of daylight savings time electrical power interruption change in user preferences and various other reasons Consequently there is a need for a thermostat that offers the simplicity of a manual thermostat while providing the convenience and versatility of a programmed thermostat SUMMARY OF THE INVENTION An object of the invention is to provide an essentially self programmable thermostat for people that do not enjoy programming conventional programmable thermostats An object of some embodiments of the invention is to provide a programmable thermostat that does not rely on having to know the time of day thus a user does not have to enter that Another object of some embodiments is to provide a pro grammable thermostat with both daily and weekly occurring settings yet the thermostat does not rely on having to know the day of the week thus a user does not have to enter that Another object of some embodiments is to provide a pro grammable thermostat that does not rely on onscreen menus for programming 20 25 30 35 40 45 50 55 60 65 2 Another object of some embodiments is to provide a ther mostat that effectively programs itself as it is being used as a manual thermostat Another object
7. weekly time Rule 5 A weekly pattern overrides or supersedes a daily pattern if their assigned timestamps 48 are within a predeter mined period of each other such as for example within three hours of each other based on the Y values of their timestamps Rule 6 If a user enters a manually entered setpoint tem perature thermostat 10 controls unit 26 in response to the manually entered setpoint temperature and continues to do so US 7 784 704 B2 5 until interrupted by one of the following a the user enters another manually entered setpoint temperature adjusts the temp b a learned daily setpoint temperature becomes acti vated at its learned daily time or c a learned weekly setpoint temperature becomes activated at its learned weekly time Rule 7 If a user enters two manually entered setpoint temperatures within a predetermined short period of each other e g within 90 minutes of each other the first of the two manual entries is disregarded as being erroneous and is not to be considered as part of any learned pattern Rule 8 Ifa learned daily setpoint temperature is activated at a learned time and is soon interrupted by the user entering a manually entered setpoint temperature within a predeter mined short period e g within 3 hours and this occurs a predetermined number of days in a row e g 3 days in a row as indicated by the X value of timer 38 then the daily pattern associated with the learned daily setpo
8. L TEMPCOND UNIT IN RESPONSE TO FIRST MANUALLY ENTERED SETPT TEMP RECEIVE SECOND MANUALLY ENTERED SETPT TEMP CONTROL TEMPCOND UNIT IN RESPONSE TO SECOND MANUALLY ENTERED SETPT TEMP RECEIVE THIRD MANUALLY ENTERED SETPT TEMP CONTROL TEMPCOND UNIT IN RESPONSE TO THIRD MANUALLY ENTERED SETPT TEMP ASSIGNING TIMESTAMPS TO THE FIRST SECOND AND THIRD MANUALLY ENTERED TEMPS IDENTIFY A LEARNED SETPT TEMP BASED ON FIRST SECOND AND THIRD MANUALLY ENTERED TEMPS CONTROLLING TEMP COND UNIT IN RESPONSE TO THE LEARNED SETPT TEMP RECEIVE FOURTH MANUALLY ENTERED SETPT TEMP CONTROL TEMPCOND UNIT IN RESPONSE TO FOURTH MANUALLY ENTERED SETPT TEMP SUBSEQUENTLY ONCE AGAIN CONTROLLING TEMP COND UNIT IN RESPONSE TO THE LEARNED SETPT TEMP FIG 3 62 42 64 70 66 72 68 74 76 78 80 82 84 86 US 7 784 704 B2 1 SELF PROGRAMMABLE THERMOSTAT FIELD OF THE INVENTION The subject invention generally pertains to aroom or build ing thermostat and more specifically to a method of program ming such a thermostat wherein the thermostat can in effect program itself for various daily and or weekly temperature setpoints upon learning temperature setting habits of a user and can do such self programming without ever knowing the actual time of day or day of the week BACKGROUND OF RELATED ART Furnaces air conditioners and other types of temperature conditioning units typ
9. US007784704B2 az United States Patent 10 Patent No US 7 784 704 B2 Harter 45 Date of Patent Aug 31 2010 54 SELF PROGRAMMABLE THERMOSTAT 5 165 465 A 11 1992 Kenet ee 165 11 1 5 170 935 A 12 1992 Federspiel et al 236 44 C 76 Inventor Robert J Harter 4233 Cliffside Dr La 5 902 183 A 5 1999 D Souza Crosse WI US 54601 5 943 917 A 8 1999 Truong et al 6 375 087 Bl 4 2002 Day et al EM 6 741 158 B2 5 2004 Engler et al Notice Subjectt discl the term of thi DE S Notice WIE cen ene erence TUS D506 150 S 6 2005 Backlund et al patent is extended or adjusted under 35 D506 689 S 6 2005 Backlund et al U S C 154 b by 871 days 2003 0040842 Al 2 2003 Poth 2010 0025483 Al 2 2010 Hoeyncketal 2361 C 21 Appl No 11 704 414 cited b i 22 Filed Feb 9 2007 a Goi mcrae Primary Examiner Frantz F Jules 65 Prior Publication Data Assistant Examiner Alexis K Cox US 2008 0191045 Al Aug 14 2008 e Attorney Agent or Firm www bobharter Robert J arter 51 Int Cl EN G05D 23 32 2006 01 57 ABSTRACT GOSD 23 00 2006 01 52 US Ch etree nde cea Eee 236 1 C 236 44 hybrid manual programmable thermostat for a furnace or 58 Field of Classification Search S366 Tr conditioner offe The simplicity of a manual thermostat while providing the convenience and versatility ofa program 230 49 C 1 44 E mable one Initially the hybrid thermostat appe
10. abits of a user and programs itself accordingly BRIEF DESCRIPTION OF THE DRAWINGS FIG 1 is a schematic view of a thermostat controlling a temperature conditioning unit FIG 2 shows an example of algorithm for a thermostat method FIG 3 shows another example of algorithm for a thermo stat method DESCRIPTION OF THE PREFERRED EMBODIMENT FIGS 1 3 show a thermostat 10 and a method for automati cally programming it Initially thermostat 10 might first appear and function as an ordinary manual thermostat Ther mostat 10 for instance includes a manual input 12 e g dial keyboard pointer slider potentiometer pushbutton etc that enables a user to manually enter a manual setpoint 14 that defines a manually entered setpoint temperature 16 The manually entered setpoint temperature 16 is the user s desired target temperature for a comfort zone 18 Upon comparing the manually entered setpoint temperature 16 to the comfort zone s actual temperature 20 provided by a temperature sensor 22 thermostat 10 provides an output signal 24 that controls a temperature conditioning unit 26 e g furnace heater air conditioner heat pump etc to heat or cool air 28 in comfort zone 18 thereby urging the comfort zone s actual temperature 20 toward the manually entered setpoint tem perature 16 A digital display 30 can be used for displaying the current setpoint temperature and another display 32 can show the comfort zone s ac
11. ars to function as an ordinary manual thermostat however it privately 56 References Cited observes and learns a user s manual temperature setting hab its and eventually programs itself accordingly If users begin U S PATENT DOCUMENTS changing their preferred temperature settings due to seasonal See application file for complete search history 4 335 847 A 6 1982 Levine nss 236 046R changes or other reasons the thermostat continues learning 4 350 966 A 9 1982 Nelson and will adapt to those changes as well For ease of use the 4 467 178 A 8 1984 Swindle 392 449 thermostat does not require an onscreen menu as a user inter 4 469 274 A 9 1984 Levine 236 46 R face In some embodiments the thermostat can effectively 4 531 064 A 7 1985 Levine eaput ege aet eue ee onines 307 66 program itself for temperature settings that are set to occur at 4 669 654 A 6 1987 Levine et al particular times daily or just on weekends yet the user is not 3056712 A 10 1991 Enc roce 236n0R Iiredto enter the time of day or the day of the week 5 088 645 A 2 1992 Bell 236 46 R 5 115 967 A 5 1992 Wedekind 236 46 R 5 Claims 3 Drawing Sheets S7 BN TIMER 24 hr and or 7 day RECOGNIZE PATTERN WITH THE MANUALLY ENTERED SETPT TEMPS AND CORRESPONDING TIMESTAMPS BASED ON PATTERN AND OR ONE OR MORE OF RULES 1 10 ESTABLISH 56
12. by the next learned setpoint or interrupted by a manually entered setpoint 5 Ifa learned weekly setpoint and a learned daily setpoint are set to occur near the same time on given day the learned daily setpoint is ignored on that day because the day is prob ably a Saturday or Sunday 6 Whenever the user manually adjusts the temperature the manually entered setpoint temperature always overrides the currently active setting The manually entered setpoint remains active until it is interrupted by a subsequent manual or learned setting 7 If a user repeatedly tweaks or adjusts the temperature within a short period only the last manually entered setpoint temperature is used for learning purposes as the other set tings are assumed to be trial and error mistakes by the user 8 Ifauser has to repeatedly correct a learned daily setpoint e g correct it3 days ina row that learned setpoint is deleted and no longer used Using 3 days as the cutoff avoids deleting a good daily pattern due to 2 days of corrections over a weekend 30 35 40 45 55 60 65 6 9 If a user has to repeatedly correct a learned weekly setpoint e g correct it 2 weeks in a row that learned set point is deleted and no longer used 10 Switching between heating and cooling for at least 5 seconds or so deletes the entire collection of learned data To execute one or more ofthe aforementioned rules micro processor 36 could operate under the
13. ck 86 Although the invention is described with respect to a pre ferred embodiment modifications thereto will be apparent to those of ordinary skill in the art The scope of the invention therefore is to be determined by reference to the following claims The invention claimed is 1 A thermostat method for a temperature conditioning unit wherein the temperature conditioning unit helps control a temperature of a comfort zone the method comprising US 7 784 704 B2 7 receiving a first manually entered setpoint temperature which is assigned a first timestamp controlling the temperature conditioning unit in response to the first manually entered setpoint temperature receiving a second manually entered setpoint temperature which is assigned a second timestamp controlling the temperature conditioning unit in response to the second manually entered setpoint temperature receiving a third manually entered setpoint temperature which is assigned a third timestamp controlling the temperature conditioning unit in response to the third manually entered setpoint temperature identifying a learned setpoint temperature based on the first manually entered setpoint temperature the second manually entered setpoint temperature and third manu ally entered setpoint temperature and controlling the temperature conditioning unit in response to the learned setpoint temperature and wherein the first timestamp the second timestamp and
14. control of various algo rithms such as for example an algorithm 40 of FIG 2 an algorithm 42 of FIG 3 a combination of algorithms 40 and 42 or another algorithm altogether Referring to the example of FIG 2 a block 44 represents receiving a plurality of manual setpoints 14 that are manually entered at various points in time over a period each of the manual setpoints 14 provides a manually entered setpoint temperature 16 that in block 46 becomes associated with a timestamp 48 via timer 38 Timer 38 can run independently or irrespective of the actual time of day and irrespective of the actual day of the week In blocks 50 and 52 thermostat 10 controls unit 26 as a function of a differential between the actual zone temperature 20 and a currently active manually entered setpoint In block 54 microprocessor 36 recognizes patterns with the manually entered setpoints Based on the patterns in block 56 microprocessor 10 establishes learned setpoint temperatures and corresponding learned times In block 58 some time after controlling unit 26 in response to the manually entered setpoint temperatures block 50 auto matically switching at the learned time to controlling the temperature conditioning unit in response to the learned set point temperature This might continue until interrupted by block 60 wherein microprocessor 36 encounters another rec ognized pattern or upon receiving another manual setpoint at which point unit 26 is controll
15. ed in response thereto Referring to the example of FIG 3 a block 62 represents microprocessor 36 receiving temperature feedback signal 20 from temperature sensor 22 Sensor 22 could be incorporated within thermostat 10 as shown in FIG 1 or sensor 22 could be installed at some other location to sense the room tempera ture such as the temperature of air 28 entering unit 26 Blocks 64 66 and 68 represent microprocessor 36 sequentially receiving first second and third manually entered setpoint temperatures Blocks 70 72 and 74 represent thermostat 10 controlling unit 26 at sequential periods in response to a differential between the comfort zone temperature and the various manually entered setpoint temperatures Block 76 represents assigning timestamps 48 to the various manually entered setpoint temperatures A block 78 represents micro processor 36 identifying a learned setpoint temperature based on the first second and third manually entered setpoint tem peratures In block 80 thermostat 10 controls unit 26 in response to a differential between the learned setpoint tem perature and the actual zone temperature Block 82 represents subsequently receiving a fourth manually entered setpoint temperature Block 84 represents controlling unit 26 in response to the fourth manually entered setpoint temperature Some time after that thermostat 10 returns to controlling unit 26 in response to the learned setpoint temperature as indi cated by blo
16. g a second manually entered setpoint temperature which is assigned a second timestamp controlling the temperature conditioning unit in response to the second manually entered setpoint temperature receiving a third manually entered setpoint temperature which is assigned a third timestamp controlling the temperature conditioning unit in response to the third manually entered setpoint temperature identifying a learned setpoint temperature based on the first manually entered setpoint temperature the second manually entered setpoint temperature and third manu ally entered setpoint temperature and controlling the temperature conditioning unit in response to the learned setpoint temperature and wherein the first timestamp the second timestamp and the third timestamp are based on a 168 hour timer
17. ically respond to a thermostat in con trolling the air temperature of a room or other area of a building Currently thermostats can be classified as manual or programmable With manual thermostats a user manually enters into the thermostat a desired temperature setpoint and then thermo stat controls the temperature conditioning unit to bring the actual room temperature to that setpoint At various times throughout the day the user might adjust the setpoint for comfort or to save energy When operating in a heating mode for instance a user might lower the setpoint temperature at night and raise it again in the morning Although manual thermostats are easy to understand and use having to repeat edly adjust the setpoint manually can be a nuisance Programmable thermostats on the other hand can be pro grammed to automatically adjust the setpoint to predeter mined temperatures at specified times The specified times can initiate automatic setpoint adjustments that occur daily such as on Monday Friday or the adjustments might occur weekly on days such as every Saturday or Sunday For a given day programmable thermostats can also be programmed to make multiple setpoint adjustments throughout the day such as at 8 00 AM and 11 00 PM on Saturday or at 6 00 AM and 10 PM on Monday through Friday Such programming how ever can be confusing as it can involve several steps includ ing 1 synchronizing the thermostat s clock with the current
18. int temperature is erased from the memory Rule 9 If a learned weekly setpoint temperature is acti vated at a learned time and is soon interrupted by the user entering a manually entered setpoint temperature within a predetermined short period e g within 3 hours and this occurs a predetermined number of weeks in a row e g 2 weeks in a row as indicated by an additional counter that counts the cycles of the X value of timer 38 then the weekly pattern associated with the learned weekly setpoint tempera ture is erased from the memory Rule 10 Actuating switch 34 between cool and heat or actuating some other manual input can be used for erasing the entire collection of learned data Rules 1 10 might be summarized more concisely but per haps less accurately as follows 1 Assign timestamps 48 to every manually entered set point temperature 2 Identify daily patterns similar manually entered tem peratures and times 3 days in a row and identify weekly patterns 3 similar manually entered temperatures and times each spaced a week apart Based on those patterns establish learned setpoint temperatures and learned times 3 Activate learned daily setpoints at learned times and keep them active until the activated setpoint is overridden by the next learned setpoint or interrupted by a manually entered setpoint 4 Activate learned weekly setpoints at learned times and keep them active until the activated setpoint is overridden
19. the third timestamp are based ona 24 hour timer and all lie within a predetermined range of each other based on the 24 hour timer 2 The thermostat method of claim 1 wherein first manu ally entered setpoint temperature the second manually entered setpoint temperature and third manually entered set point temperature all lie within 5 F of each other 3 The thermostat method of claim 1 further comprising after controlling the temperature conditioning unit in response to the learned setpoint temperature receiving a fourth manually entered setpoint temperature and after receiving the fourth manually entered setpoint tem perature controlling the temperature conditioning unit in response to the fourth manually entered setpoint tem perature 10 20 25 30 8 4 The thermostat method of claim 3 further comprising after controling the temperature conditioning unit in response to the fourth manually entered setpoint tem perature returning to controlling the temperature con ditioning unit in response to the learned setpoint tem perature 5 A thermostat method for a temperature conditioning unit wherein the temperature conditioning unit helps control a temperature of a comfort zone the method comprising receiving a first manually entered setpoint temperature which is assigned a first timestamp controlling the temperature conditioning unit in response to the first manually entered setpoint temperature receivin
20. ts timestamp 48 are stored in memory for later reference Rule 2 Microprocessor 36 looks for patterns of manual setpoints wherein each manual setpoint has a manually entered setpoint temperature and a timestamp 48 A daily pattern for example can be defined as three con secutive days in which a series of three similar manually entered setpoint temperatures e g within a predetermined deviation of perhaps 2 F or 5 F of each other have similar daily timestamps 48 e g each Y value being within a prede termined deviation of perhaps 90 minutes of each other Such a daily pattern can then be assigned a learned daily setpoint temperature and a learned daily time The learned daily setpoint temperature could be for example an average of the three similar manually entered setpoints temperatures or the most recent of the three The learned daily time could be for example 20 minutes before the three similar times tamps For future automatic settings the 20 minutes might allow microprocessor 36 to activate the learned daily setpoint temperature before the user would normally want to adjust the setpoint A weekly pattern for example can be defined as three manual setpoints spaced 7 days apart e g same X value after one complete 7 day cycle in which three similar manu ally entered setpoint temperatures e g within 2 F or 5 F of each other have similar timestamps 48 e g each Y value being within 90 minutes of each other
21. tual temperature Displays 30 and 32 could be combined into a single display unit wherein the combined US 7 784 704 B2 3 display unit could show the current setpoint temperature and the zone s actual temperature simultaneously or in an alter nating manner Thermostat 10 might also include a selector switch 34 for manually switching between a cooling mode for cooling zone 18 and a heating mode for heating zone 18 Items such as display 30 selector switch 34 manual input 12 and output 24 are well known to those of ordinary skill in the art One or more of such items for example can be found in a model CT8775C manual thermostat provided by Honey well Inc of Golden Valley Minn Although thermostat 10 can operate as a regular manual thermostat by controlling unit 26 as a function ofa differential between the actual zone temperature and the most recently entered manual setpoint temperature thermostat 10 includes a microprocessor 36 e g computer CPU firmware pro grammed chip etc that enables thermostat 10 to observe the temperature setting habits ofthe user e g person that manu ally enters setpoint temperatures into the thermostat After several manual settings microprocessor 36 may learn the user s preferred setpoint temperatures and timestamps them with the aide of a timer 38 With one or more learned setpoint temperatures and timestamps 48 microprocessor 36 can begin anticipating the user s desires and automatically
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