Wireless Sensor Node Sealed Casing Opening
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Solution Overview
Problem
Installing sensors in difficult-to-access locations is cumbersome due to the need for cabling, requiring significant technical effort and investment.
Innovation Solution
A sensing device with a radio frequency interface and a sealed casing that exposes a sensitive element, allowing wireless data transmission and energy transfer, eliminating the need for cabling and enabling autonomous operation in harsh environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are installed in difficult-to-access locations with cabling, then measurement capability is achieved, but installation complexity and technical effort increase significantly
Solution Approach 1:
The patent extracts the cabling requirement from the sensor system by implementing wireless communication. The sensor node communicates measurement data wirelessly to external systems, eliminating the need for physical cable installation in difficult-to-access locations while maintaining measurement capability.
Solution Approach 2:
The patent replaces the mechanical cabling system with an electromagnetic field-based wireless communication system. This substitution eliminates the need for physical connections, reducing installation complexity while preserving data transmission functionality.
2Reliability
If sensors are installed in difficult-to-access locations with cabling, then measurement capability is achieved, but installation cost increases
Solution Approach 1:
The patent removes the cabling component from the installation system, eliminating the costs associated with cable installation, labor, and maintenance in difficult-to-access locations. The wireless sensor node provides measurement capability without requiring expensive physical infrastructure.
3Object-affected harmful factors
If a sealed casing is used to protect the sensor, then protection from environment is improved, but access to sensitive element is restricted
Solution Approach 1:
The patent applies local quality by creating a selective opening in the sealed casing specifically for the sensitive element. This localized opening provides environmental protection for the majority of the sensor components while allowing the sensitive element to access the target environment for measurement, resolving the contradiction between protection and access.
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 device can be easily installed in hard-to-reach areas, reducing installation complexity and cost, while maintaining protection and reliability, and can be used in various applications with minimal space requirements.
Implementation Method 1
a radio frequency interface for transmitting the sensor data
Implementation Method 2
A seal is arranged for sealing the opening against an interior of the casing
Data Source
AI summary
The present sensing device comprises a sensor (1, ) for providing sensor data representative of a quantity to be measured. Together with the sensor (1, ) a radio frequency interface (2, ) for transmitting the sensor data is arranged in a casing (3, ). The casing (3, ) comprises an opening (33, ) for exposing a sensitive element (11, ) of the sensor (1, ) to an environment of the casing (3, ). A seal (4, ) is provided for sealing the opening (33, ) against an interior (3, ) of the casing (3, ). The sensing device can be used as autonomous humidity detector for detecting humidity e.g. in cars under test.