LED Strip Power Dissipation Determination via Voltage Pulse
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Solution Overview
Problem
Existing methods for determining the maximum power dissipation property of light-emitting-diode (LED) strips require additional components and connections, making them complex and inefficient.
Innovation Solution
A determination device that provides voltage pulses to the LED strip's channels to detect current signals, allowing the calculation of maximum power dissipation properties without modifying the strip, using switches, detectors, and controllers to derive the necessary parameters for power supply duty cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional components (impedance modules, current sources) and connections are added to the load device for investigation, then the maximum power dissipation property can be determined, but the device complexity increases
Solution Approach 1:
The load device itself provides the measurement signal through its natural response to a voltage pulse. The current drawn by the LED strip when a voltage pulse is applied directly reveals its power dissipation characteristics, eliminating the need for external measurement components.
Solution Approach 2:
The measurement function is extracted from the operational function. By applying a brief voltage pulse and measuring the resulting current, the power dissipation property is determined without adding permanent measurement components that would alter the load device's normal operation.
2Measurement precision
If the light emitting diode strip is modified with additional components for determination, then the maximum power dissipation property can be determined, but the manufacturing precision and simplicity are reduced
Solution Approach 1:
The determination of maximum power dissipation is performed as a preliminary action during the feeding process, before the load device is fully installed. This allows the property to be determined on the unchanged load device, maintaining manufacturing precision while enabling accurate power supply configuration.
3Measurement precision
If traditional methods with additional components are used, then power dissipation can be determined, but productivity and manufacturing efficiency are reduced
Solution Approach 1:
The determination device is integrated into the feeding device, combining the power supply function with the determination function. This merging eliminates separate measurement steps and additional components, improving productivity while maintaining accurate determination of power dissipation properties.
Solution Approach 2:
The feeding device performs multiple functions: it supplies power to the load device and simultaneously determines its maximum power dissipation property. This multi-functionality eliminates the need for separate determination equipment, enhancing manufacturing efficiency.
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
Enables accurate determination of maximum power dissipation properties without additional components, simplifying the process, reducing costs, and allowing for automatic configuration, thereby improving manufacturing efficiency and reducing the need for oversized power supplies.
Implementation Method 1
a first switch (10) for providing a first invitation signal in the form of a first voltage pulse to a first channel (I) of the load device (2)
Implementation Method 2
a detector (15, 16) for detecting a first response signal in the form of a first current signal resulting from a provision of the first invitation signal to the first channel (I)
Data Source
Figure 1~2
Figure 3~4
Figure 5~8
AI summary
Determination devices (1) determine properties of load devices (2) that may remain unchanged for said determining and that comprise first channels with first elements (20, 25). The determination devices comprise first switches (10) for providing first invitation signals to the first channels, detectors (15, 16) for detecting first response signals that result from the first invitation signals, and controllers (17) for deriving the properties of the load devices (2) from detections of the first response signals. The properties define first maximum values of first loads of the first channels, and the controllers (17) calculate first maximum duty cycles of first supply signals for supplying the first channels in view of the first maximum values of the first loads and power capacities of power supplies (3) that produce the first supply signals. The load devices (2) may further comprise second channels with second elements (21, 26), and the determination devices (1) may further comprise second switches (11).