Wire-Bundle Temperature Sensing for Inaccessible Motor Areas
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Solution Overview
Problem
Existing temperature measurement methods for electric motors, particularly in electric mobility applications, face challenges in accessing inaccessible areas and achieving accurate, averaged temperature measurements without the need for multiple voluminous sensors.
Innovation Solution
A measuring assembly comprising separate wires with good thermal conductivity, routed away from the test body and combined into a wire bundle at a distance, where a temperature sensor is clamped using a holder to measure temperature, allowing for precise temperature detection across multiple points without direct sensor attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature sensor is directly attached to the test body, then the temperature measurement is straightforward, but the sensor cannot access inaccessible areas and requires multiple voluminous sensors for averaged measurement
Solution Approach 1:
The patent uses wires as intermediary elements to transfer thermal energy from inaccessible measurement points to an accessible location. The wires are attached to the test body at inaccessible areas and extend to accessible regions where the temperature sensor can measure the temperature without direct contact with the test body surface.
2Measurement precision
If multiple temperature sensors are used for averaged temperature measurement, then measurement precision improves, but device complexity and volume increase
Solution Approach 1:
The patent combines multiple wire attachments into a single wire bundle that converges at an accessible location. Multiple wires can be attached at different inaccessible points on the test body, but they are bundled together and connected to a single temperature sensor, thereby achieving averaged temperature measurement without requiring multiple sensors.
3Ease of operation
If wires are combined into a bundle at a distance from the test body, then accessibility to inaccessible areas is improved, but thermal conduction efficiency may be reduced
Solution Approach 1:
The patent segments the measurement system into two distinct parts: the wire attachment points on the test body (which can be at inaccessible locations) and the measurement location (which is accessible). The wires serve as thermal conduits connecting these segmented parts, allowing the measurement portion to be separated from the measurement target.
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 accurate and averaged temperature measurement of inaccessible areas on electric motors by using thermally conductive wires and a clamping holder to secure the temperature sensor, improving measurement precision and reducing the need for multiple sensors.
Implementation Method 1
at least two separate wires suitable for thermal conduction are led away from a test body
Implementation Method 2
a temperature sensor is attached to the wire bundle by means of a holder that exerts a clamping effect
Data Source
AI summary
A measuring assembly for measuring a temperature of a test body is provided, wherein at least two separate wires suitable for thermal conduction are led away from a test body and combined into a wire bundle at a distance from the test body, and wherein a temperature sensor is attached to the wire bundle by clamping action by means of a holder. Preferably, the holder comprises a holder base having an inner side and an outer side, and spring clips connected thereto, wherein a recess for receiving a temperature sensor is arranged on the inner side of the holder base, and wherein two of the spring clips are arranged opposite each other with respect to the holder base and are adapted to generate a clamping force towards the inner side of the holder base.