Wireless Damper Blade Position Sensing Without Mechanical Linkages
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Solution Overview
Problem
Current ventilation damper systems face inaccuracies in position measurement, leading to inefficient and potentially harmful control mechanisms due to indirect measurement techniques and mechanical linkage degradation over time.
Innovation Solution
A sensor module directly coupled to the damper blade with wireless communication capabilities, utilizing MEMS sensors to accurately determine and communicate the position of the damper blade, reducing errors and providing precise feedback for control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If indirect measurement techniques using actuators or mechanical linkages are used, then device complexity is reduced, but measurement precision deteriorates due to inaccuracies and mechanical degradation
Solution Approach 1:
The patent replaces indirect mechanical measurement methods (actuators and linkages) with direct electronic sensing. A sensor module with wireless communication circuit is mounted directly on the damper blade to electronically sense and transmit position information, eliminating the need for mechanical coupling and associated degradation problems.
Solution Approach 2:
The sensor module acts as an intermediary between the damper blade and the control system. It directly senses the blade position and communicates this information wirelessly to the control system, providing accurate real-time feedback without requiring mechanical linkages or complex derivation calculations.
2Reliability
If calibration techniques are applied to improve accuracy, then measurement precision is temporarily improved, but reliability deteriorates over time due to mechanical linkage degradation
Solution Approach 1:
The sensor module provides self-service by directly sensing damper blade position without requiring external calibration or adjustment. The wireless sensor continuously provides accurate position feedback automatically, eliminating the need for periodic calibration procedures and manual maintenance that are required for mechanical linkage systems.
3Loss of information
If limit switches are used on the damper blade, then device complexity is minimized, but measurement precision deteriorates by providing little position information
Solution Approach 1:
The sensor module measures multiple position parameters simultaneously (angular position, linear displacement, or both) rather than simply detecting end positions. This provides comprehensive position information including intermediate positions, velocity, and acceleration data that limit switches cannot provide.
Data Source
AI summary
A damper assembly includes a damper frame, at least one damper blade, an actuator and a sensor module. The damper blade(s) is/are movably attached to the damper frame to at least partially regulate air flow proximate the damper frame. The actuator is configured to control a position of the at least one damper blade. The sensor module is coupled to a first damper blade and includes a sensor device operable to determine position information regarding the position of the damper blade. The sensor module further includes a wireless communication circuit that is operable to communicate the position information to a second wireless communication circuit disposed off of or away from the damper blade.