Analog HVAC controller including dial for setting temperature set points
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Solution Overview
Problem
Existing HVAC systems lack an intuitive and efficient method to visually represent and switch between temperature set points, making it difficult for users to manage heating and cooling modes effectively.
Innovation Solution
An HVAC controller with an analog display featuring a dial and LEDs that indicate temperature set points, allowing users to change between cooling and heating modes by rotating the dial, with the LEDs illuminating corresponding markers to show the current and set temperatures, enabling seamless transitions between modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a digital display is used to show temperature set points, then the precision of temperature indication is improved, but the ease of operation and user interaction is worsened
Solution Approach 1:
The temperature scale is segmented into discrete marker positions around the dial, with each marker representing a specific temperature value. This segmentation allows the analog display to maintain precision comparable to digital displays while preserving the intuitive rotational interaction that users find easier to operate.
Solution Approach 2:
The patent employs a circular dial layout where temperature values are arranged along the circumference. This curved arrangement allows users to rotate the dial naturally to adjust temperature, combining the precision of marked intervals with the ease of rotational manipulation, thereby resolving the contradiction between precision and ease of operation.
2Loss of information
If multiple temperature set points are displayed simultaneously, then the information completeness is improved, but the device complexity is worsened
Solution Approach 1:
The analog dial serves multiple functions: it displays the current temperature, indicates the set point temperature, and allows user adjustment through rotation. The LED markers serve dual purposes by both marking temperature values and illuminating to highlight the active set point. This multi-functionality reduces the need for separate display elements, thereby maintaining information completeness while limiting device complexity.
Solution Approach 2:
The patent uses LED illumination to change the visual state of markers, illuminating those corresponding to the current set point temperature. This optical change provides clear visual feedback about the active temperature setting without requiring additional display components, thus maintaining information completeness while avoiding increased complexity.
3Ease of operation
If an analog dial interface is used, then the ease of operation is improved, but the measurement precision of temperature setting is worsened
Solution Approach 1:
The dial is divided into discrete angular segments, each corresponding to a specific temperature value marked by LED indicators. This segmentation allows users to rotate the dial to precise predetermined temperature positions, maintaining measurement precision while preserving the ease of rotational operation. The discrete markers eliminate the ambiguity that can occur with continuous analog scales.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a user-friendly interface for managing temperature set points, enhancing user interaction and system efficiency by clearly displaying temperature changes and mode transitions, thus improving the control over heating and cooling operations.
Implementation Method 1
The electric motor may set a position of the pointer to indicate, or 'point,' at a marker corresponding to a current temperature of the area
Implementation Method 2
the HVAC controller may control a set of light-emitting diodes (LEDs) to illuminate one or markers of the set of markers in order to identify one or more temperature set points
Data Source
AI summary
In some examples, a device controls a heating, ventilation, and air conditioning (HVAC) system within a building. The device includes an analog display including a set of markers. Additionally, the devices includes processing circuitry configured to determine whether one or both of a cooling set point mode and a heating set point mode is activated and cause a set point to change from a first set point value to a second set point value in response to receiving a first rotation input to a dial. Additionally, the processing circuitry is configured to control a set of LEDs to transition from illuminating a first marker of the set of markers to illuminating a second marker of the set of markers, wherein the first marker corresponds to the first set point value and the second marker corresponds to the second set point value.