Combination Sensor Ultrasonic Capacitive Fluid Measurement
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Solution Overview
Problem
Existing systems require multiple sensors to measure various fluid characteristics, such as level, temperature, speed-of-sound, and dielectric constant, which can be cumbersome and inefficient.
Innovation Solution
A combination sensor system that includes a transducer for outputting ultrasonic waves and a capacitive sensor with a capacitive plate to reflect these waves, allowing for simultaneous measurement of multiple fluid characteristics within a single sensing system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate sensors are used to measure different fluid characteristics, then measurement precision for each parameter is maintained, but device complexity increases
Solution Approach 1:
The patent combines multiple sensing functions (ultrasonic wave transmission and capacitive sensing) into a single integrated sensor assembly. The transducer and capacitive sensor share a common housing and can sense the same fluid simultaneously, reducing the number of separate sensors needed while maintaining measurement capabilities for multiple fluid characteristics including level, temperature, and dielectric constant
Solution Approach 2:
The integrated sensor system performs multiple measurement functions through a single device. The ultrasonic transducer measures fluid level and speed of sound, while the capacitive sensor measures dielectric constant and temperature. This multi-functional approach allows one sensor assembly to replace what would traditionally require multiple separate sensors
2Adaptability or versatility
If multiple separate sensors are deployed, then comprehensive fluid monitoring is achieved, but ease of operation deteriorates
Solution Approach 1:
By merging multiple sensing functions into a single integrated assembly with shared housing and coordinated operation, the system simplifies installation and operation. The combined sensor requires a single mounting location and provides comprehensive fluid monitoring through coordinated ultrasonic and capacitive measurements
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 efficient and multi-parameter measurement of fluid characteristics, reducing the complexity and number of sensors needed while providing accurate data for fluid quantity, quality, and dielectric constant analysis.
Implementation Method 1
The transducer is configured to output an ultrasonic wave through the fluid
Implementation Method 2
The capacitive sensor includes a capacitive plate configured to reflect the ultrasonic wave toward the transducer
Data Source
AI summary
A fluid sensor including a sensing area configured to receive a fluid. The fluid sensor includes a transducer and a capacitive sensor. The transducer is configured to output an ultrasonic wave through the fluid. The capacitive sensor includes a capacitive plate configured to reflect the ultrasonic wave toward the transducer.