Recessed Temperature Sensor for Accurate Thermal Measurement
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Solution Overview
Problem
Existing temperature sensor installations on test bodies, such as power rails in electric vehicles or air conditioners, face challenges in achieving stable and accurate temperature measurements due to poor thermal connection and sensitivity to vibrations, which can lead to systematic temperature differences and reduced measurement accuracy.
Innovation Solution
A test arrangement with a recessed temperature sensor that allows for secure mechanical attachment without screws, utilizing a spring clamp or cable tie for fixation, and potentially filled with a contact agent to enhance heat exchange, thereby reducing slippage and heat dissipation, and improving thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the temperature sensor is pressed externally onto the surface of the test body, then the installation is simple, but the thermal connection is poor and systematic temperature differences occur
Solution Approach 1:
The temperature sensor is recessed into a cavity in the test body, nesting the sensor within the structure. This allows the sensor to be partially enclosed by the test body material, improving thermal contact while maintaining simple installation through the recessed design that eliminates the need for complex fastening mechanisms.
Solution Approach 2:
A contact agent is introduced as an intermediary substance between the temperature sensor and the test body. This contact agent enhances thermal conductivity, ensuring good thermal connection while allowing the sensor to maintain its recessed position without requiring direct mechanical pressure.
2Ease of operation
If the temperature sensor is attached to the surface, then installation is easy, but sensitivity to vibrations increases and measurement stability decreases
Solution Approach 1:
By recessing the temperature sensor into a cavity in the test body, the sensor is partially enclosed and constrained by the surrounding structure. This nesting approach reduces the sensor's exposure to external vibrations while maintaining easy installation, as the recessed design naturally limits sensor movement without requiring additional vibration-damping components.
3Device complexity
If the temperature sensor is externally applied, then installation requires no special structures, but heat exchange occurs only from one side reducing response time
Solution Approach 1:
The recessed configuration allows the temperature sensor to be surrounded by the test body material on multiple sides, enabling heat exchange from several directions simultaneously. This multi-directional heat transfer path accelerates the temperature response while the overall structure remains simple, as the recessed cavity itself provides the necessary thermal contact surfaces without requiring additional heat exchange 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 configuration ensures stable and accurate temperature measurements by enhancing heat exchange, reducing sensitivity to vibrations, and preventing systematic temperature differences, leading to improved measurement accuracy and faster response times.
Implementation Method 1
heat exchange or heat flow from the test body to the temperature-sensitive element
Implementation Method 2
heat exchange or heat flow from the test body to the temperature-sensitive element from several spatial directions
Data Source
AI summary
The invention relates to a test arrangement comprising a test body and a temperature sensor for measuring the temperature thereof, as well as a correspondingly suitable temperature sensor. In the test arrangement, a temperature sensitive element of the temperature sensor is at least partially recessed into a recess in the test body by insertion into the recess.