Thermostat User Input Sequencing to Reduce Operator Errors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Thermostats in building systems face challenges in differentiating between multiple user inputs received within a short period of time, leading to potential operator errors and incorrect control actions in HVAC systems.
Innovation Solution
A control device and method for a thermostat that includes a user interface capable of receiving two distinct user inputs within a predetermined time, where the first input triggers a specific action and the second input triggers another action, with the system navigating directly to relevant menus or settings based on the input sequence, using a dial for input and providing information through larger icons, numbers, or letters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the thermostat processes multiple user inputs received within a short period, then the system becomes more responsive to user commands, but operator errors increase due to difficulty in differentiating between simultaneous inputs
Solution Approach 1:
The patent applies preliminary action by establishing a predetermined time window threshold before processing inputs. The system pre-defines the acceptable time range for simultaneous inputs, allowing it to quickly determine whether multiple inputs should be processed together or sequentially, thus maintaining responsiveness while preventing operator errors through pre-established criteria
Solution Approach 2:
The patent changes the time parameter by introducing a predetermined time window that dynamically adjusts how inputs are interpreted. By modifying the time threshold parameter, the system can distinguish between intentional simultaneous inputs and accidental repeated inputs, resolving the contradiction between responsiveness and reliability
2Productivity
If the thermostat navigates directly to menus based on input sequence, then user interaction efficiency improves, but device complexity increases due to additional processing logic
Solution Approach 1:
The system pre-establishes navigation rules and menu structures before user interaction occurs. By preparing the navigation path and menu options in advance, the thermostat can quickly direct users to relevant settings based on input sequence without requiring complex real-time decision-making logic
Solution Approach 2:
The patent introduces an intermediary navigation layer that mediates between user inputs and system actions. This intermediary structure organizes the complexity into manageable navigation steps, allowing efficient user interaction while containing device complexity within the navigation framework rather than scattered throughout the control logic
Data Source
AI summary
A control device for a building, the control device includes a single user interface configured to receive a first signal from a first user input and a second signal from a second user input. The control device further includes a processing circuit configured to receive both the first signal and the second signal within a predetermined period of time. The processing circuit is further configured to perform a first action based on the first signal when the first signal is received before the second signal and not perform a second action in response to the second signal and perform the second action based on the second signal when the second signal is received before the first signal and not perform the first action in response to the first signal.