Control methods for setting a reference voltage in an air treatment system
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional air treatment systems lack efficient and accurate control mechanisms for blower speed adjustment and filter life tracking, particularly in response to varying environmental conditions such as smoke and dust concentrations, leading to suboptimal performance and inaccurate filter replacement timing.
Innovation Solution
An automated control system that adjusts blower motor speed based on particulate and smoke concentrations, incorporates a variable delay mechanism, calibrates sensors, and tracks filter life using algorithms to optimize performance and provide timely filter replacement notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual control systems are used to adjust motor speed and operation time, then the user can increase motor speed in response to environmental conditions, but the user must continually adjust the system to match environmental conditions
Solution Approach 1:
The control system automatically monitors environmental conditions (smoke, particulates, CO2 levels) and adjusts motor speed and operation time without user intervention. The system serves itself by making real-time decisions based on sensor inputs, eliminating the need for continual manual adjustment while maintaining responsiveness to environmental changes.
2Extent of automation
If conventional control systems track filter life using simple usage time, then the system can provide visual indication for filter replacement, but the approximation of filter life is not accurate
Solution Approach 1:
The system continuously monitors multiple parameters including hours of operation, motor runtime, environmental conditions (smoke, particulates, CO2), and filter pressure differential. This multi-parameter feedback mechanism provides accurate real-time assessment of filter loading and remaining life, enabling precise prediction of filter replacement timing rather than simple time-based estimates.
3Extent of automation
If automated control systems adjust motor speed based on environmental conditions, then the need for manual adjustment is eliminated, but the system complexity increases
Solution Approach 1:
The control system integrates multiple functions into a single automated unit: environmental sensing (smoke, particulates, CO2), motor speed control, operation timing, and filter life tracking. This multi-functional approach consolidates what would otherwise require separate systems, achieving high automation while managing complexity through integration rather than proliferation of separate components.
Data Source
AI summary
A control system and associated methods for an air treatment system. In one aspect, the present invention provides a control system and method for controlling blower speed as a function of separately determined smoke and dust concentrations. In one embodiment, the control system and method provides a variable delayed between changes in motor speed to address undesirable rapid changes between speeds. In another aspect, the present invention provides a system and method for calibrating a sensor to provide more uniform operation over time. In yet another aspect, the present invention provide a system and method for calibrating motor speed to provide more consistent and uniform motor speed over time. The present invention also provides a system and method for tracking filter life by as a function of time, motor speed and/or a sensed variable, such as particulate concentration in the environment.