Sensor device for optically detecting characteristics of a fluid
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sensor devices for optically detecting fluid characteristics, such as turbidity in washing machines, are complex and costly due to the production of reflecting surfaces at the ends of separate transparent bodies mounted on finger-like appendages, with the optical path extending mainly in a plane parallel to the longitudinal directions of the housing.
Innovation Solution
The optical path is oriented at an angle, preferably orthogonal, to the longitudinal directions of the housing appendages, with reflecting surfaces integrated into the housing made of moulded plastic, allowing for the deflection of radiation beams without additional components, and optoelectronic devices mounted on a single circuit board for efficient parallel beam transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reflecting surfaces are formed at the ends of separate transparent bodies mounted on finger-like appendages, then the optical path can be established, but the production becomes complicated and costly
Solution Approach 1:
The patent combines the housing structure with the optical path formation by creating finger-like appendages that are integral parts of the housing. The reflecting surfaces are formed directly on these appendages, merging the structural support function with the optical path definition function, thereby simplifying production and reducing the number of separate components
Solution Approach 2:
The finger-like appendages serve multiple functions: they provide structural support for the housing, define the optical path geometry, and carry the reflecting surfaces. This multi-functionality eliminates the need for separate transparent bodies and mounting structures, reducing manufacturing complexity while maintaining optical performance
2Ease of operation
If the optical path extends in a plane parallel to the longitudinal directions of the appendages, then the beam transmission is straightforward, but the device complexity increases
Solution Approach 1:
The patent changes the orientation of the optical path from being parallel to the longitudinal directions of the appendages to extending in a plane at an angle (preferably orthogonal) to these directions. This dimensional reorientation allows the optical beam to traverse the measurement region more efficiently while reducing the overall device structure complexity
3Adaptability or versatility
If separate transparent bodies are used for the optical path, then the optical components can be independently positioned, but the number of parts increases
Solution Approach 1:
The patent merges the housing structure with the optical path formation by creating finger-like appendages that are integral parts of the housing. The reflecting surfaces are formed directly on these appendages, merging the structural support function with the optical path definition function, thereby simplifying production and reducing the number of separate components
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 design simplifies production, reduces costs, and ensures consistent optical performance by integrating reflecting surfaces and optoelectronic devices within the housing, minimizing beam divergence and enhancing measurement accuracy while maintaining the ability to detect fluid characteristics like turbidity effectively.
Implementation Method 1
the first reflecting surface being adapted to deflect the radiation beam transmitted by the first optoelectronic device towards the aforesaid fluid crossing portion
Implementation Method 2
the second reflecting surface being adapted to deflect the beam from said crossing portion towards the second optoelectronic device
Implementation Method 3
Sensor device for optically detecting characteristics of a fluid, such as the turbidity of the washing bath
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Sensor device (1) comprising a housing (2) with a base portion (3) from which first and second appendages (4, 5) extend at least partially facing each other and between which, in use, a fluid is present, and first and second optoelectronic devices (13, 14) adapted to transmit and receive radiation and mounted, respectively, at the first and second appendages (4, 5) of the housing (2), whereby, in use, a radiation beam transmitted by the first optoelectronic device (13) propagates in an optical path including a portion (16) crossed by the fluid between said appendages (4, 5) and reaches the second optoelectronic device (14), said optical path comprises at least one reflecting surface (10a, 11a) integral with an appendage (4, 5) of the housing (2) and adapted to deflect the radiation beam between the associated optoelectronic device (13, 14) and said portion (16).