Graphical Setpoint Plot Interface for Intuitive Thermostat Programming
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Solution Overview
Problem
Existing HVAC thermostats either overwhelm users with complex controls or lack energy-saving sophistication, making it difficult for typical users to access and utilize energy-saving features effectively, leading to missed energy-saving opportunities.
Innovation Solution
A user-friendly thermostat interface featuring a graphical two-dimensional setpoint plot area on an electronic display, allowing users to intuitively adjust temperature and time settings with animated feedback, facilitating easy interaction and control of HVAC systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If programmable thermostats with multiple settings are provided, then energy-saving capability is improved, but device complexity increases making users intimidated and unable to use the features
Solution Approach 1:
The thermostat automatically learns and adapts to user temperature adjustments and occupancy patterns, programming itself without user intervention. The system monitors manual adjustments over time to build learned setpoints and schedules autonomously, eliminating the need for users to program complex schedules while maintaining energy-saving capabilities
Solution Approach 2:
The system dynamically changes operational parameters based on learned patterns. It transitions from using manufacturer defaults to using user-specific learned setpoints and schedules, adapting temperature values, timing, and HVAC control parameters automatically based on observed user behavior and environmental conditions
2Ease of operation
If self-programming behavior is implemented, then ease of operation is improved, but user confidence and control perception deteriorate
Solution Approach 1:
The system provides continuous feedback to users about its learned behaviors, current setpoints, and operational status. It displays learned schedules and allows users to review and verify that the thermostat is executing the correct temperature profiles, maintaining user awareness and confidence in the automated system
Solution Approach 2:
The thermostat performs preliminary learning during an initial setup period, collecting data on user manual adjustments and occupancy patterns before fully activating self-programming. This gradual introduction allows users to observe the system learning their preferences before complete automation begins, building confidence through visible progress
3Ease of operation
If manufacturer default profiles are used, then ease of operation is improved, but energy-saving effectiveness deteriorates due to one-size-fits-all approach
Solution Approach 1:
The system transitions from static manufacturer default profiles to dynamic user-specific learned schedules. It continuously adapts temperature setpoints and timing based on individual household patterns, making the energy-saving profile customized and effective for each user rather than applying a universal default approach
Solution Approach 2:
The thermostat implements location-specific and user-specific temperature preferences by learning which rooms are occupied and what temperatures individual users prefer at different times. It creates localized comfort zones and personalized schedules rather than applying uniform temperature control throughout the building
Data Source
AI summary
A user-friendly programmable thermostat is described that includes a body having a central electronic display surrounded by a ring that can be rotated and pressed inwardly to provide user input in a simple and elegant fashion. The thermostat can be used to graphically display a two-dimensional setpoint plot area that includes a number of setpoint symbols each being positioned according to the time of day and temperature associated with the setpoint. The user can initiate the “birth” of a new setpoint, which includes presenting an animated sequence in which a new setpoint symbol is moved to a position on the plot area associated with the time of day and temperature for the new setpoint.