This disclosure relates generally to HVAC systems, and more particularly, to HVAC controllers that may be used for controlling HVAC systems.
Heating, ventilation, and/or air conditioning (HVAC) systems are often used to control the comfort level within a building or other structure. Such HVAC systems typically include an HVAC controller that controls various HVAC components of the HVAC system in order to affect and/or control one or more environmental conditions within the building. Over time, the HVAC system may begin to operate less efficiently. Diagnosing the cause of the loss in system efficiency may be difficult. Diagnostics may be employed to assist in monitoring the performance of an HVAC system over time.
This disclosure relates generally to HVAC systems, and more particularly, to HVAC controllers that may be used for controlling HVAC systems.
In some illustrative embodiments, an HVAC controller may be configured to log and record performance parameter data related to the performance of a connected HVAC system over a period of time. The performance parameter data related may be written to a performance log that is stored in a memory of the HVAC controller. In some instances, the HVAC controller may receive a first user request via the user interface, and in response, retrieve at least some of the performance related data from the performance log that corresponds to a first selected subset of the period of time, and display at least some of the retrieved performance parameter data on a display of the HVAC controller.
In some cases, the HVAC controller may receive a second user request via the user interface and, in response, retrieve at least some of the performance parameter data from the performance log that corresponds to a second selected subset of the period of time, and display at least some of the retrieved performance parameter data on the display of the HVAC controller. In some cases, the second subset of the period of time may be longer that the first subset of the period of time.
In some instances, and to reduce the storage requirement for the performance parameter data, the HVAC controller may only store a minimum and/or a maximum value over a specified period of time for each of the one or more different performance parameters, but this is not required. Also, and in some instances, it is contemplated that the HVAC controller may automatically change a format of the performance parameter data that is displayed on the display of the HVAC controller based on a current setup configuration of the connected HVAC system.
The preceding summary is provided to facilitate an understanding of some of the innovative features unique to the present disclosure and is not intended to be a full description. A full appreciation of the disclosure can be gained by taking the entire specification, claims, drawings, and abstract as a whole.
The disclosure may be more completely understood in consideration of the following detailed description of various embodiments in connection with the accompanying drawings, in which:
While the disclosure is amenable to various modifications and alternative forms, specifics thereof have been shown by way of example in the drawings and will be described in detail. It should be understood, however, that the intention is not to limit aspects of the disclosure to the particular embodiments described. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the disclosure.
The following description should be read with reference to the drawings wherein like reference numerals indicate like elements throughout the several views. The detailed description and drawings show several embodiments which are meant to illustrative of the claimed disclosure.
It is contemplated that the HVAC controller(s) 18 may be configured to control the comfort level in the building or structure by activating and deactivating the HVAC component(s) 6 in a controlled manner. The HVAC controller(s) 18 may be configured to control the HVAC component(s) 6 via a wired or wireless communication link 20. In some cases, the HVAC controller(s) 18 may be a thermostat, such as, for example, a wall mountable thermostat, but this is not required in all embodiments. Such a thermostat may include (e.g. within the thermostat housing) or have access to a temperature sensor for sensing an ambient temperature at or near the thermostat. In some instances, the HVAC controller(s) 18 may be a zone controller, or may include multiple zone controllers each monitoring and/or controlling the comfort level within a particular zone in the building or other structure.
An illustrative HVAC controller, which is not meant to be limiting in any way, is disclosed in: US Published Patent Application No. 20090140062, entitled “HVAC CONTROLLER THAT SELECTIVELY REPLACES OPERATING INFORMATION ON A DISPLAY WITH SYSTEM STATUS INFORMATION”; US Published Application No. 20090143880, entitled “HVAC CONTROLLER WITH CONTEXT SENSITIVE HELP SCREENS”; US Published Application No. 20090143918, entitled “METHOD AND APPARATUS FOR CONFIGURING AN HVAC CONTROLLER”; US Published Application No. 20090143916, entitled “HVAC CONTROLLER HAVING A PARAMETER ADJUSTMENT ELEMENT WITH A QUALITATIVE INDICATOR”; US Published Application No. 20090143879, entitled “HVAC CONTROLLER WITH PARAMETER CLUSTERING”; US Published Application No. 20090140056, entitled “HVAC CONTROLLER WITH QUICK SELECT FEATURE,” the entireties of which are incorporated herein by reference for all purposes.
In the illustrative HVAC system 4 shown in
In some cases, the system of vents or ductwork 10 and/or 14 can include one or more dampers 24 to regulate the flow of air, but this is not required. For example, one or more dampers 24 may be coupled to one or more HVAC controller(s) 18, and can be coordinated with the operation of one or more HVAC components 6. The one or more HVAC controller(s) 18 may actuate dampers 24 to an open position, a closed position, and/or a partially open position to modulate the flow of air from the one or more HVAC components to an appropriate room and/or zone in the building or other structure. The dampers 24 may be particularly useful in zoned HVAC systems, and may be used to control which zone(s) receives conditioned air from the HVAC component(s) 6.
In many instances, one or more air filters 30 may be used to remove dust and other pollutants from the air inside the building 2. In the illustrative example shown in
In some cases, and as shown in
When provided, the equipment interface module 34 may be configured to communicate with the HVAC controller 18 via, for example, a wired or wireless communication link 42. In some cases, the equipment interface module 34 may be incorporated or combined with the HVAC controller 18. In either cases, the equipment interface module 34 may communicate, relay or otherwise transmit data regarding the selected parameter (e.g. temperature, pressure, flow rate, etc.) to the HVAC controller 18. In some cases, the HVAC controller 18 may use the data from the equipment interface module 34 to evaluate the system's operation and/or performance. For example, the HVAC controller 18 may compare data related to the difference in temperature (delta T) between the return air side and the discharge air side of the HVAC system 4 to a previously determined delta T limit stored in the HVAC controller 18 to determine a current operating performance of the HVAC system 4.
In the illustrative embodiment of
The processor 44 may operate in accordance with an algorithm that controls or at least partially controls one or more HVAC components 6 of an HVAC system such as, for example, HVAC system 4 shown in
In some cases, the processor 44 may be programmed to receive one or more signals related to a current performance of the HVAC system from the HVAC system, either directly or via the I/O block 58. The one or more signals received by the processor 44 from the HVAC system 4 may be indicative of one or more performance parameters that may be used to characterize the performance of the HVAC system 4. For example, the one or more signals may be indicative of the total run time since installation of the HVAC system 4, the total run time for a selected time period, the number of heating or cooling cycles completed since installation of the HVAC system 4, the number of heating or cooling cycles during a selected time period, the maximum and minimum indoor air temperature, the maximum and minimum outdoor air temperature, the maximum and minimum indoor humidity, the maximum and minimum outdoor humidity, the maximum and minimum discharge air temperature, the maximum and minimum delta T, and/or the like. These are just some examples.
The processor 44 may receive and record data related to any combination of those performance parameters listed above, as well as other parameters as desired. For example, in some cases, the processor 44 may receive and record parameter data relating to two different performance parameters such as an indoor air temperature and an indoor humidity, an outdoor temperature and an outdoor humidity, a discharge air temperature and a delta T, but these are just examples. Additionally, it is useful to note that the data that is received and subsequently recorded by the processor 44 may be dependent upon the type of HVAC equipment installed. For example, if the HVAC system 4 does not include an outdoor air temperature sensor, data related to the outdoor air temperature may not be recorded by the processor 44 in the memory 52.
In some cases, the processor 44 may be configured to store data related to the performance of the HVAC system over a period of time. The performance data may be logged and recorded in one or more performance data logs stored in the HVAC controller memory 52. In some cases, heating performance data corresponding to the heating mode of the HVAC system 4 may be stored in a heating performance log, and cooling performance data corresponding to the cooling mode of the HVAC system 4 may be stored in a cooling performance log. In some cases, the heating performance log and the cooling performance log may be recorded in separate data logs in the HVAC controller memory 52, but this is not required. In other cases, the heating performance log and the cooling performance log may be combined into a single HVAC system performance data log. In such instances, the heating performance data may be displayed and viewed separately from the cooling performance data when desired, but this is not required. The performance data log(s) may be displayed on a display of the user interface 48 in response to a request initiated by a user, or may be downloaded to a remote device for viewing and/or analysis. In many cases, the heating and the cooling performance data logs may be similar to one another. As such, the heating and cooling performance logs may be described together, and may simply be referred to herein as performance data logs.
In some cases, the processor 44 may be configured to log and record performance data related to the performance of the HVAC system for a period of time of: up to about five years; of up to about three years; of up to about two years; of up to about one year, or more or less. As discussed above, the performance data may be logged and recorded in a performance data log (heating, cooling, and/or combined) stored in the HVAC controller memory 52. In some cases, the processor 44 may be programmed to group performance data into one or more subsets of data according to, for example, various time periods. For example, the processor 44 may be programmed to group, classify or sort performance data stored in the performance data logs into data subsets corresponding to a one hour period, a one day period, a one week period, a one month period, a three month period, a six month period, a one year period, an eighteen month period, a two year period, and/or any other suitable time period(s). Grouping the performance related data into subsets according to various different time periods may allow the performance related data to be more easily sorted, classified and/or viewed according to one or more of the selected time periods. Additionally, data subsets corresponding to shorter periods of time (e.g. a minute, an hour, a day, a week, etc.) may be used to provide a more contemporary view the most recently collected performance related data. Data subsets corresponding to longer periods of time (e.g. a month, a three month period, a six month period, a year period, etc.) may be used to provide a more long term, historical view of the collected performance related data.
The processor 44 may be configured to record and log performance related data on a second, minute, hourly, daily, weekly, monthly, yearly, or any other suitable basis. In one specific example, the processor 44 may be configured to record and log performance related data on an hourly basis for the most recent 192 hours, on a daily basis for the most recent fifteen days, on a weekly basis for the most recent eight weeks, and on a monthly basis for the most recent twenty-five months. In some cases, the amount of data entries that may be logged and recorded on an hourly, daily, weekly, monthly and/or yearly basis by the processor 44 may only be limited by the capacity of the controller memory 52.
To help conserve memory, the processor 44 may be programmed to record and log only the minimum and maximum values for each of the performance related parameters being monitored during the corresponding time period. For example, each data log entry logged and recorded at the end of an hour period of time may include only the minimum and maximum values detected during the hour period for the indoor air temperature, the outdoor air temperature, the indoor humidity, the outdoor humidity, the discharge air temperature, the delta T, and/or the like, as applicable. Also, each data log entry logged and recorded at the end of a daily time period may include only the minimum and maximum values detected during the daily time period for the indoor air temperature, the outdoor air temperature, the indoor humidity, the outdoor humidity, the discharge air temperature, the delta T, and/or the like, as applicable.
Additionally, the data log entry may record the total run time of the HVAC system 4 since installation, the total run time for each time period, the number of heating or cooling cycles completed since installation of the HVAC system, the number of heating or cooling cycles during each time period, as applicable. In some cases, each data log entry logged and recorded by the processor 44 may include a date and time stamp. The date and time stamp may be provided by the processor according to the date and time when the data log entry was recorded. In some cases, an HVAC cycle number count may be used in addition to, or in lieu of, a date and time stamp.
When the shortest time period corresponds to an hour, the content of the performance data logs may be updated on an hourly basis at the end of every sixty minute period as determined by an internal clock or timer provided with the processor 44. The internal clock or timer may be integral with the processor 44 or may be provided as a separate component. In some cases, when the amount of data log entries exceeds the capacity of the data log, the oldest data log entry may be removed from the performance data log before a new data log entry is recorded (First-In-First-Out). The oldest data log entry may be the oldest entry that was created for a selected period of time. For example, at the end of every hour a new data log entry may be recorded. If there are 192 hourly data entries previously recorded in the hourly data log before the new data log entry is made, the oldest created hourly data log entry may be removed. Similarly, at the end of every hour, the processor 44 may be programmed to compare the day of the current time and date stamp to the current daily data log entry. If the days are different, a new daily log entry may be created. In some cases, this may cause the processor 44 to remove the oldest daily log entry from the performance data log.
The processor 44 may be further programmed to compare the week of the current date and time stamp to the week of the currently weekly entry and, if the weeks are different, a new weekly data log entry may be added to the performance data log. As a result, in some cases, the oldest weekly data log entry may be removed from the performance data log. The processor 44 may also be programmed to compare the month of the current time date and time stamp to the month of the current monthly data log entry. If the months differ, the processor 44 may be programmed to add a new monthly data log entry. In some cases, the oldest monthly log entry may be removed. These time periods are only illustrative. Also, in some cases, only the minimum and maximum values may be stored for each time period, which may help conserve memory space within memory 52.
In some cases, the processor 44 also may be configured to monitor one or more signals from the HVAC system 4 to determine whether or not the HVAC system 4 has violated a pre-determined diagnostic limit for a selected parameter stored in the HVAC controller memory 52. In some cases, for example, the processor 44 may monitor one or more signals to/from the HVAC system 4 to determine whether or not the HVAC system has violated a pre-determined delta T limit in either the heating and/or cooling mode. A violation of a pre-determined diagnostic limit such as, for example, a delta T limit may occur if, for example, the HVAC system 4 fails to reach a minimum delta T limit or exceeds a maximum delta T limit. Additionally, a violation may occur if, for example, the HVAC system 4 fails to meet or exceed a minimum delta T limit within a pre-determined period of time. These are just some examples. The diagnostic limits and the conditions for violating a diagnostic limit may be dependent upon the HVAC system set-up, the number and type of HVAC components 6 included in the HVAC system 4, whether or not the HVAC system 4 is subject to a utility load shutoff, user preferences, user specified conditions for determining a diagnostic fault, and the like.
In many cases, when a diagnostic limit has been violated, the processor 44 may be configured to indicate to the user that a diagnostic fault has occurred. This may be accomplished in a variety of ways. For example, if the processor 44 has determined that a diagnostic limit has been violated, and a diagnostic fault has occurred, the processor 44 may display a user alert on a display of the user interface 48. In some cases, the processor 44 may be programmed to alert the user to a diagnostic fault only after a pre-determined number of faults are detected by the processor 44. In some cases, the user alert may be a simple text string displayed on the display of the user interface 48 describing the nature of the violation that has occurred. In other instances, the processor 44 may provide some visual indication to alert the user that a fault has occurred. Such visual indication may include a colored, flashing, highlighted, or grayed-out button or icon provided on the user interface 48. In still other instances, the processor 44 may be configured to send an email, instant message, or text message to a user to alert the user that a fault has occurred. Such an alert may be provided to the user even when the user is away from the home, building, or other structure in which the HVAC system 4 is installed.
Memory 52 of the illustrative HVAC controller 18 may be in communication with the processor 44. Memory 52 may be any suitable type of storage device including, but not limited to, RAM, ROM, EPROM, flash memory, a hard drive, and/or the like. In some cases, processor 44 may store information within memory 52, and may subsequently retrieve the stored information. Memory 52 may be used to store any desired information, such as control algorithms, set points, diagnostic limits such as, for example, differential pressure limits, delta T limits, and the like, for the HVAC controller 18. As eluded to above, memory 52 may also be used to store performance data related to the performance of the HVAC system 4 in one or more performance logs. The performance data may be stored in the memory 52 such that it may be retrieved from the memory upon request. In some cases, the performance data may be stored in the memory 52 such that at least one subset of the data may be retrieved from the memory in response to a request from a user.
In some cases, HVAC controller 18 may also include a data port 56. Data port 56 may be a wireless port such as a Bluetooth™ port or any other wireless protocol. In other cases, data port 56 may be a wired port such as a serial port, a parallel port, a CAT5 port, a USB (universal serial bus) port, or the like. In some instances, data port 56 may be a USB port and may be used to download and/or upload information from a USB flash drive. Other remote devices may also be employed, as desired.
Data port 56 may be configured to communicate with processor 44 and may, if desired, be used to either upload information to processor 44 or to download information from processor 44. Information that can be uploaded or downloaded may include values of operating parameters. In some instances, data port 56 may be used to upload a previously-created thermostat configuration into HVAC controller 18, thereby hastening the programming process. In some cases, data port 56 may be used to download a thermostat configuration that has been created using HVAC controller 18, so that the thermostat configuration may be transferred to other similar thermostats. In some cases, data port 56 may be used to upload and/or download information pertaining to an HVAC dealer or contractor.
In some cases, data port 56 may be used to download data stored within the memory 52 for analysis. For example, data port 56 may be used to download a performance data log or parts thereof to a remote device such as a USB memory stick (also sometimes referred to as a thumb drive or jump drive), personal computer, laptop, iPAD® or other tablet computer, PDA, smart phone, or other remote device, as desired. In some cases, the data may be convertible to an MS EXCEL®, MS WORD® file, text, or XML file, but this is not required.
In some cases, HVAC controller 18 may be configured to provide substantial display and/or programming functionality, but this is not required. In some cases, HVAC controller 18 may be configured to display a default display, referred to herein as a home screen, which is displayed by HVAC controller 18 when no other data entry is underway for a period of time.
The illustrative home screen 72 shown in
In some cases, illustrative home screen 72 may be considered as having two or more regions. For example, home screen 72 may include a first region 86 and a second region 88. In some instances, first region 86 may be considered as displaying or otherwise providing primary information, while second region 88 may be considered as displaying or otherwise providing secondary information. In some cases, primary information may be information that is considered to be more important, more interesting and/or more useful than secondary information. To illustrate, first region 86 may display one or more of a current air temperature reading, a current indoor humidity, a schedule status, and the like. Second region 88 may display one or more of a date and time, an outdoor air temperature reading, an outdoor humidity reading, an equipment status, and the like.
Home screen 72 may also include a third region 90 that may be used for displaying and/or adjusting a set point value. In the example shown, third region 90 may display a first parameter 92, a first up arrow 94 and a first down arrow 96. Third region 90 may also display a second parameter 98, a second up arrow 100 and a second down arrow 102. First parameter 92 may be adjusted up or down by a user using first up arrow 94 and/or first down arrow 96, as appropriate. Second parameter 98 may be adjusted up or down by a user using second up arrow 100 and/or second down arrow 102, as desired. In some cases, third region 90 may, as illustrated, display both a heating temperature set point and a cooling temperature set point, but this is not required.
Upon selection of the INSTALLER OPTIONS menu options 118, the illustrative HVAC controller 18 may be configured to display a password prompt screen 128, as illustrated in
Upon selection of the DONE button 144 confirming entry of a password, the HVAC controller 18 may confirm that a valid password has been entered. If a valid password has been entered, the HVAC controller 18 may display an installer options menu screen 156, such as illustrated in
In the example shown, the table 160 includes a number of installer options 180 that may be selected by the user. In some cases, a DATA LOGS option 180 may be provided, which may provide access to a performance data log stored in the HVAC controller memory 52. In some instances, selection of the DATA LOGS option 180 may cause a data logs menu screen 184 to be displayed by the HVAC controller 18, as shown in
In the example shown, a user may select either performance log option 188c or 188d to access a performance data log stored in the HVAC controller memory 52. For example, a user may select the COOLING PERFORMANCE LOG option 188d to access a cooling performance log stored in the HVAC controller memory 52. In some instances, upon selection of the COOLING PERFORMANCE LOG option 188d, the HVAC controller 18 may retrieve at least some of the cooling performance data stored in the memory 52 and display the cooling performance data via one or more screens such as, for example, screens 200, 202, 204, 206 as shown in the illustrative examples provided by
Tabs or buttons 208, 212, 216, and 220 shown in
In the example shown, performance data log screen 200 displays hourly performance data from the performance data log identified by the first label 228. In some cases, the hourly performance data may be presented in a table, such as table 236. In some cases, table 236 may be a scrolling table, in which case the performance data log screen may include a scroll bar and/or arrow keys (not shown) to facilitate navigation of table 236. In some cases, table 236 may display maximum and minimum values for one or more performance parameters identified in a first column 240 of table 236. The maximum and minimum values may be displayed in separate columns 244, 248 of table 236, but this is not required. Table 236 may include one or more rows 252, each corresponding to a performance parameter monitored by the HVAC controller 18. Each performance parameter may include a label 254 identifying the monitored performance parameter for which the maximum and minimum values are displayed. Because the performance data that may be logged and recorded by the HVAC controller 18 may be dependent upon type of HVAC equipment and the equipment setup, the HVAC controller 18 may be programmed to dynamically change the format of table 236 displayed on screen 200 so as to not display rows/labels 252, 254 for one or more performance parameters that do not include corresponding performance parameter data stored in the controller memory 52. For example, if the HVAC equipment does not include discharge air temperature sensor, then table 236 may not display a row/label 252, 254 corresponding to either the discharge air temperature or delta T.
In some cases, even if a particular type of HVAC equipment (e.g. air temperature sensor) may be present as part of the HVAC system 4, the HVAC equipment may not report any data, may report only data outside the allowable range, or may report data indicating the equipment is not operating or available over a certain time period for any number of reasons including, for example, an equipment malfunction. As such, table 236 may still include a row/label 252, 254 for the performance parameter related to that equipment type (e.g. air temperature sensor), but will not display any data in the adjacent row. Instead, the table 236 may include an indicator that may indicate that data is missing, out of range, or not available for the selected period of time. Exemplary indicators may include “--,” “-,” “N/A,” “NA,” “Error,” and the like. If some data is reported during the selected time period, then table 236 may include a data entry related to that equipment type for the selected time period.
In some cases, performance data log screen 200 may include first and second buttons 258, 262 for navigating forward and backward in time within the hourly performance data stored in the performance data log. For example, selection of first button 258 labeled “Previous Hour” by a user may cause HVAC controller 18 to cause table 236 to display performance log data from the previous hour. Similarly, selection of second button 262 labeled “Next Hour” by a user may cause HVAC controller 18 to display performance log data from the next succeeding hour. In some cases, holding first button 258 or second button 262 may cause HVAC controller 18 to rapidly move through the hourly performance log data displayed in table 236, sometimes by four or more hours at a time. This feature may help a user to more quickly navigate to a desired time period contained with the performance data log.
Performance data log screen 200 may also include a HELP button 266 that, when selected may cause HVAC controller 18 to display additional information that may be helpful to a user in using the current screen. The user may select button 270 labeled “OK” or “Done” when they are finished viewing the performance log data displayed on screen 200. Selection of button 270 labeled “OK” may cause the HVAC controller 18 to return to a previous screen such as menu screen 184 shown in
In some cases, a user may select another subset of performance data for viewing by selecting a corresponding tab or button 212, 216, 220 provided along a top portion 224 of screen 200. For example, a user may select tab 212 corresponding to daily performance data for the performance data log identified by the first label 228. In some cases, the daily performance data may overlap and/or include at least some of the hourly performance data contained within the identified performance data log.
Similar to the performance data log screen 200 shown in
The user may select button 270 labeled “OK” or “Done” when they are finished viewing the performance log data displayed on screen 202. Selection of button 270 labeled “OK” may cause the HVAC controller 18 to return to a previous screen such as menu screen 184 shown in
In some cases, a user may select yet another subset of performance data for viewing by selecting the corresponding tab or button 208, 216, 220 provided long the top portion 224 of screen 202. For example, a user may select tab 216 corresponding to weekly performance data for the performance data log identified by the first label 228. In some cases, the weekly performance data may overlap and/or include at least some of the hourly and/or daily performance data contained within the identified performance data log.
Similar to performance data log screens 200 and 202 shown in
The user may select button 270 labeled “OK” or “Done” when they are finished viewing the performance log data displayed on screen 204. Selection of button 270 labeled “OK” may cause the HVAC controller 18 to return to a previous screen such as menu screen 184 shown in
In some cases, a user may select yet another subset of performance data for viewing by selecting the corresponding tab or button 208, 212, 220 provided long a top portion 224 of screen 202. For example, a user may select tab 220 corresponding to monthly performance data for the performance data log identified by the first label 228. In some cases, the monthly performance data may overlap and/or include at least some of the hourly, daily, and/or weekly performance data contained within the identified performance data log.
Performance data log screen 206 may also include first and second buttons 290, 294 for navigating forward and backward within the monthly performance data stored in the performance data log. For example, selection of first button 290 labeled “Previous Month” by a user may cause HVAC controller 18 to update table 236 to display performance log data from the previous month (e.g. December). Similarly, selection of second button 294 labeled “Next Month” by a user may cause HVAC controller 18 to display performance log data from the next month (e.g. February). In some cases, pressing and holding first button 290 or second button 294 may cause HVAC controller 18 to rapidly move through the monthly performance log data displayed in table 236, sometimes by three or more months at a time. This feature may help a user to more quickly navigate to a desired month contained with the performance data log.
The user may select button 270 labeled “OK” or “Done” when they are finished viewing the performance log data displayed on screen 206. Selection of button 270 labeled “OK” may cause the HVAC controller 18 to return to a previous screen such as menu screen 184 shown in
While
Performance data log screen 302 of
In some cases, the HVAC controller 18 may be configured to display heating or cooling performance data by stage combination of the HVAC system. Referring now back to
User query screen 400, as shown in
Upon receiving positive confirmation from a user via user query screen 400 that viewing the performance data by stage is desired, HVAC controller 18 may then display an equipment stage selection screen 430 as shown in
In some instances, upon selection of the HEAT 1, 2 option 434b, the HVAC controller 18 may retrieve at least some of the heating performance data for the selected stage (e.g. HEAT 1, 2) stored in the memory 52 and display the heating performance data for the selected heating stage (e.g. HEAT 1, 2) via one or more screens such as, for example, screens 500, 502, 504, 506 as shown in the illustrative examples provided by
Tabs or buttons 508, 512, 516, and 520 shown in
In the example shown, equipment stage performance data log screen 500 displays hourly performance data from the performance data log identified by the first label 528. In some cases, the hourly performance data may be presented in a table, such as table 536. In some cases, table 536 may be a scrolling table, in which case the performance data log screen may include a scroll bar and/or arrow keys (not shown) to facilitate navigation of table 536. In some cases, table 536 may display maximum and minimum values for one or more performance parameters identified in a first column 540 of table 536. The maximum and minimum values may be displayed in separate columns of table 536, but this is not required. Table 536 may include one or more rows 552, each corresponding to a performance parameter monitored by the HVAC controller 18. Each performance parameter may include a label 554 identifying the monitored performance parameter for which the maximum and minimum values are displayed. Because the performance data that may be logged and recorded by the HVAC controller 18 may be dependent upon the type of HVAC equipment and the equipment setup, the HVAC controller 18 may be programmed to dynamically change the format of table 536 displayed on screen 500 so as to not display rows/labels 552, 554 for one or more performance parameters that do not include corresponding performance parameter data stored in the controller memory 52. For example, if the HVAC equipment does not include discharge air temperature sensor, then table 536 may not display a row/label 552, 554 corresponding to either the discharge air temperature or delta T.
In some cases, equipment stage performance data log screen 500 may include first and second buttons 558, 562 for navigating forward and backward in time within the hourly performance data stored in the performance data log. For example, selection of first button 558 labeled “Previous Hour” by a user may cause HVAC controller 18 to cause table 536 to display performance log data from the previous hour. Similarly, selection of second button 262 labeled “Next Hour” by a user may cause HVAC controller 18 to display performance log data from the next succeeding hour. In some cases, holding first button 558 or second button 562 may cause HVAC controller 18 to rapidly move through the hourly performance log data displayed in table 536, sometimes by four or more hours at a time. This feature may help a user to more quickly navigate to a desired time period contained with the performance data log.
Equipment stage performance data log screen 500 may also include a HELP button 566 that, when selected may cause HVAC controller 18 to display additional information that may be helpful to a user in using the current screen. The user may select button 570 labeled “OK” or “Done” when they are finished viewing the performance log data displayed on screen 500. Selection of button 570 labeled “OK” may cause the HVAC controller 18 to return to a previous screen such as menu screen 184 shown in
In some cases, a user may select another subset of performance data corresponding to an equipment stage for a selected mode for viewing by selecting the corresponding tab or button 512, 516, 520 provided along a top portion 524 of screen 500. For example, a user may select tab 512 corresponding to daily performance data by equipment stage for the performance data log identified by the first label 528. In some cases, the daily performance data may overlap and/or include at least some of the hourly performance data contained within the identified performance data log.
In some cases, a user may select yet another subset of performance data corresponding to an equipment stage for a selected mode for viewing by selecting the corresponding tab or button 508, 516, 520 provided long the top portion 524 of screen 502. For example, a user may select tab 516 corresponding to weekly performance data for the performance data log identified by the first label 228. In some cases, the weekly performance data may overlap and/or include at least some of the hourly and/or daily performance data contained within the identified performance data log.
In some cases, a user may select yet another subset of performance data corresponding to an equipment stage for a selected mode for viewing by selecting the corresponding tab or button 508, 512, 520 provided long a top portion 524 of screen 502. For example, a user may select tab 520 corresponding to monthly performance data for the equipment stage performance data log identified by the first label 528. In some cases, the monthly performance data for the identified equipment stage may overlap and/or include at least some of the hourly, daily, and/or weekly performance data contained within the identified performance data log.
In some cases, equipment stage performance data log screens 500, 502, 504, and 506 may also include first and second buttons 578, 582 for navigating forward and backward between different equipment stages for which performance data may be available. This may allow a user to quickly access information for a different equipment stage for which performance data may be available. The different equipment stages for which performance data may be available may be listed on the stage selection menu screen 430, as shown in
As discussed above, HVAC controller 18 may be configured to display the combined performance data for all available equipment stages for a selected time period for the identified mode (e.g. heating or cooling). In some cases, the HVAC controller 18 may be configured to retrieve the combined performance data for all available equipment stages for the identified mode upon selection of option 438 displayed on equipment stage selection menu screen 430 as shown in
While
In some cases, an HVAC system may include two or more different equipment types for either heating and/or cooling. For example, an HVAC system for heating may include a heat pump or compressor and a backup heat. Each of the heat pump and the backup heat may have multiple equipment stages. As such, for HVAC systems including two or more different equipment types, it may be desirable to view a performance data log by equipment type. In some cases, the data for the selected equipment type also may be presented by equipment stage.
Referring now again to
It should be noted with respect to each of the illustrative examples discussed herein, that if the HVAC controller 18 is not in direct control of the one or more HVAC components, a performance log for heating may not offer display of the minimum discharge temperature and the minimum delta T. Similarly, if the HVAC controller 18 is not in direct control of the one or more HVAC components, a performance log for cooling may not offer display of the maximum discharge temperature. The performance log also may not display what the internal algorithm considers the maximum delta T that would normally be displayed as the minimum delta T. Finally, if all of the minimum and maximum indoor temperature, minimum and maximum outdoor temperature, minimum and maximum indoor humidity, minimum and maximum outdoor humidity, minimum and maximum discharge temperature, and minimum and maximum delta T information is available, then the results may be displayed in a table. However, if some discharge and delta T information is not to be displayed, then the discharge and delta T values could be displayed separate from the table so that it does not appear that information is missing.
Having thus described several illustrative embodiments of the present disclosure, those of skill in the art will readily appreciate that yet other embodiments may be made and used within the scope of the claims hereto attached. Numerous advantages of the disclosure covered by this document have been set forth in the foregoing description. It will be understood, however, that this disclosure is, in many respect, only illustrative. Changes may be made in details, particularly in matters of shape, size, and arrangement of parts without exceeding the scope of the disclosure. The disclosure's scope is, of course, defined in the language in which the appended claims are expressed.
This is a continuation of co-pending U.S. patent application Ser. No. 13/326,553, filed Dec. 15, 2011, which is incorporated herein by reference.
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Prosecution History from U.S. Appl. No. 13/326,553 dated Apr. 1, 2014 through Jun. 20, 2017, 300 pp. |
Number | Date | Country | |
---|---|---|---|
20170269618 A1 | Sep 2017 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 13326553 | Dec 2011 | US |
Child | 15610406 | US |