Magnetic Float Liquid Level Indicator for Dark Environments
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Solution Overview
Problem
Existing visual liquid level indicators are difficult to use in dark, tight, or hard-to-reach locations, such as radiator cabinets, engine rooms, or open areas like oil storage tank fields, breweries, and dairy farms, where they provide limited utility due to restricted visibility.
Innovation Solution
A tank and liquid level indicator system featuring a buoyant magnetic float within a cylindrical housing, aligned with magnetic sensors and light sources, allowing for sequential detection of the liquid level and actuation of light sources through a light-transmissive cover, enabling wide-angle visibility of the liquid level indication even in dark environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a traditional visual liquid level indicator is used, then the device structure is simple, but the visibility is limited in dark or confined locations
Solution Approach 1:
The patent replaces traditional mechanical visual indicators with a magnetic sensing system that uses magnetic fields to detect liquid level. Magnetic sensors detect the position of a magnetic float, and this information is transmitted to external indicators, eliminating the need for direct line-of-sight viewing and enabling operation in dark or confined spaces.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the liquid level (float) and the indication system. The magnetic float generates a magnetic field that is detected by magnetic sensors, which then trigger visual indicators. This intermediary allows the system to function without direct optical access to the liquid level.
2Difficulty of detecting and measuring
If magnetic sensors and light sources are added to improve visibility, then the illumination and detection capability is enhanced, but the device complexity increases
Solution Approach 1:
The patent designs the magnetic float to serve multiple functions: it indicates liquid level position and simultaneously generates a magnetic field for detection. The system integrates sensing, signal generation, and indication functions into a unified architecture, reducing the need for separate components and simplifying the overall device complexity.
Solution Approach 2:
The magnetic float automatically generates the magnetic field needed for detection as it moves with the liquid level. The system uses the float's own motion and magnetic properties to provide the detection signal, eliminating the need for external actuators or complex sensing mechanisms.
3Ease of operation
If the indicator is made visible from multiple angles with a light-transmissive cover, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent transitions from a single-point visual indicator to a multi-dimensional indication system. The light-transmissive cover with light sources allows viewing from multiple angles and positions, adding spatial dimensions to the indication capability. This enables operators to view the liquid level from various locations without requiring direct access to the indicator face.
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
The system provides clear, wide-angle visual indication of liquid levels, allowing users to easily determine the level from various vantage points, even in challenging environments, and includes an electrical signal output for fluid level monitoring, enhancing operational efficiency.
Implementation Method 1
At least a portion of the float is magnetic so that a magnetic field extends from the float
Implementation Method 2
A float is disposed within the second volume and is buoyant with respect to the liquid so that the float moves with the level of the liquid in the second volume
Implementation Method 3
A light-transmissive cover is attached to the second housing so that the at least one light source is disposed between the second housing and an outer surface of the light-transmissive cover
Data Source
AI summary
A tank and liquid level indicator has first housing that holds a liquid and a second elongated housing in fluid communication with the first elongated housing so that a liquid level in the second housing is approximately equal to the level in the first housing. A float in the second housing cooperates with the circuitry to operate one or more light switches. A light-transmissive cover is disposed over the light source.