Field Unit Screen Lighting Circuit Using Surplus Power
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Solution Overview
Problem
Display devices for field units often have low contrast, making them difficult to read, especially in poor lighting conditions, and power supply issues are common due to remote locations without power access.
Innovation Solution
A circuit arrangement with a power measuring device and distribution system that utilizes surplus power from measurement instruments to drive a luminous device for screen illumination, including an optical waveguide for even light distribution, and a screen light drive device that activates the luminous device only when sufficient power is available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a screen light is added to improve display readability, then the contrast and visibility of the display are improved, but the power consumption increases and requires additional power supply infrastructure
Solution Approach 1:
The screen light is powered by surplus power from the measurement instrument's own operation. The power measuring device monitors the available power, and the screen light drive device uses any excess power to illuminate the display, making the system self-sufficient without external power sources.
Solution Approach 2:
The measurement instrument's power supply serves dual purposes: powering the measurement functions and simultaneously powering the screen light through surplus power utilization. This multi-functional use of power eliminates the need for separate power infrastructure.
2Illumination intensity
If a screen light is added to improve display readability, then the contrast and visibility of the display are improved, but the device complexity increases due to additional power distribution components
Solution Approach 1:
The power distribution for the screen light is merged with the existing power supply infrastructure of the measurement instrument. The power measuring device and screen light drive device are integrated into the existing circuit arrangement, avoiding separate power distribution systems.
Solution Approach 2:
The system automatically manages power distribution by monitoring surplus power availability and activating the screen light only when power is available, eliminating the need for complex manual control systems or additional power infrastructure.
3Illumination intensity
If the screen light operates continuously to ensure readability, then the display visibility is maintained, but the power consumption increases and may deplete available power
Solution Approach 1:
The screen light operation is dynamic rather than static. The screen light drive device continuously monitors power availability and activates or deactivates the screen light accordingly, allowing the system to adapt to changing power conditions and extend the duration of power availability for critical functions.
Solution Approach 2:
The power measuring device provides feedback on surplus power availability to the screen light drive device, which adjusts the screen light operation in real-time. This feedback mechanism ensures the screen light operates only when power is available, preventing power depletion.
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 energy-efficient screen lighting, reduces power consumption, and ensures readable display values even in low-light environments without additional power sources, while maintaining power for critical functions.
Implementation Method 1
The light distribution device is arranged for distributing incident light evenly over the field unit screen module
Implementation Method 2
a light generating device (916)
Data Source
AI summary
A lighting arrangement for a field unit screen is provided. The lighting arrangement comprises a circuit arrangement for a field unit with a power measuring device, a power distribution device, and a luminous device. The power measuring device and the power distribution device are adapted for determining an existing power and forwarding a surplus power to a screen light drive device. The screen light drive device determines whether the existing power is sufficient for lighting, and drives a luminous device when sufficient power is available. The luminous device comprises a light distribution device and a light generating device.