Non-Light-Emitting Variable Transmission Device Control
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Solution Overview
Problem
Existing non-light-emitting variable transmission devices often exhibit non-uniform visible transmittance, making it difficult to achieve consistent glare reduction and sunlight control in buildings, as they are typically controlled using the same voltage and do not account for individual variations in characteristics.
Innovation Solution
A method and apparatus for controlling non-light-emitting variable transmission devices by determining and applying unique operating parameters based on characterization data, including voltage and current measurements, to achieve uniform visible transmittance across multiple devices, even when installed in close proximity or as part of a larger glazing system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the same voltage is applied to all non-light-emitting variable transmission devices, then the control system is simple, but the visible transmittance is not uniform across devices
Solution Approach 1:
The patent applies local quality by determining individual operating parameters for each non-light-emitting variable transmission device based on its specific characterization data. Instead of using a uniform control approach, the system tailors voltage and current parameters to each device's unique properties, ensuring uniform visible transmittance across all devices while maintaining practical control system complexity through automated parameter determination.
2Manufacturing precision
If individual operating parameters are determined for each device based on characterization data, then visible transmittance uniformity is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by obtaining characterization data for each non-light-emitting variable transmission device before implementing the control system. This preliminary characterization allows the system to pre-determine individual operating parameters, reducing the complexity of real-time control while achieving uniform visible transmittance. The characterization data is collected and processed in advance, enabling simplified operational control during actual use.
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 approach allows for more precise control of visible transmittance, ensuring uniformity and consistency across multiple devices, improving the appearance and functionality of glazing systems by accounting for individual variations and operational conditions.
Implementation Method 1
A non-light-emitting variable transmission device can reduce glare and the amount of sunlight entering a room
Data Source
AI summary
A method can be used to control the operation of one or more non-light-emitting, variable transmission devices. In an embodiment, a method of operating a plurality of non-light-emitting, variable transmission devices can include receiving requests for requested visible transmittance for the non-light-emitting, variable transmission devices; determining operating parameters for the non-light-emitting, variable transmission devices; and operating the non-light-emitting, variable transmission devices at the operating parameters, wherein the operating parameters for the non-light-emitting, variable transmission devices are different. In another aspect, the method can include operating the non-light-emitting, variable transmission device at a first operating parameter for a time period, wherein the operating parameter corresponds to an intermediate visible transmittance; generating a characterization parameter based at least part on the voltage and current measurements that are obtained during the time period; and controlling the non-light-emitting, variable transmission device period based at least in part on the characterization parameter.