Magnetic Inductive Switch Probe Motion Detection

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Solution Overview

Problem

Existing electronic clinical thermometers require complex structures and high manufacturing costs to detect probe motion for pre-heating, leading to measurement errors and inefficiencies.

Innovation Solution

An induction type electronic thermometer probe motion detection device with a simple structure using a magnetic inductive switch and annular magnet to detect probe motion, allowing for energy-efficient and cost-effective pre-heating control without an electrical power source.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a photonic transmitter and photodetector are used to detect probe motion, then the probe motion can be detected, but the device structure becomes complicated and manufacturing cost increases

Engineering Contradiction:

Improveprobe motion detectionVSAvoiddevice structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the photonic detection system (optical components) with a magnetic detection system using a magnetic inductive switch and magnet. This substitution simplifies the overall device structure while maintaining reliable probe motion detection functionality, directly resolving the contradiction between detection reliability and device complexity

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the complex photonic transmitter and photodetector components from the device, retaining only the essential magnetic inductive switch and magnet components. This extraction eliminates unnecessary complexity while preserving the core motion detection capability

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If a circuit board with photonic components is used for probe motion detection, then the probe motion can be detected, but the manufacturing cost increases

Engineering Contradiction:

Improveprobe motion detectionVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent substitutes expensive photonic components with a simple magnetic inductive switch and magnet system that can be manufactured at lower cost. The magnetic components are simpler to produce and integrate, directly reducing manufacturing costs while maintaining detection reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs inexpensive magnetic components (magnetic inductive switch and magnet) that can be easily manufactured and replaced if needed, significantly reducing the overall manufacturing cost compared to expensive photonic components while maintaining adequate functionality

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 solution provides accurate and efficient probe motion detection, reducing measurement errors and costs while ensuring stable operation and environmental sustainability.

Implementation Method 1

Inside the cavity locates a magnetic inductive switch, wherein the magnetic inductive switch communicates to the host of electronic thermometer by wires; A magnetic signal source located in the position of the other side of the probe holder after the placement of the probe, where corresponding with the magnetic inductive switch

Methodology Applied

Scientific EffectMagnetic induction: Electromagnetic Induction

Implementation Method 2

Inside the probe tip has a heating mechanism, wherein the probe tip and the heating mechanism electrically connected with the host of the electronic thermometer by wires

Methodology Applied

Scientific EffectResistive heating: Joule Heating

Data Source

PatentUS8256955B2Induction type of electronic thermometer probe motion detection device

Publication Date: 2012.09.04 EDAN INSTR

AI summary

The invention discloses an induction type of electronic thermometer probe motion detection device, including a probe and a probe holder; wherein the probe includes a cavity and a probe tip; Inside the probe tip has a heating mechanism, wherein the probe tip and the heating mechanism electrically connected with the host of the electronic thermometer by wires; Inside the cavity locates a magnetic inductive switch, wherein the magnetic inductive switch communicates with the host of electronic thermometer by wires; A magnetic signal source located in the position of the other side of the probe holder after the placement of the probe, where corresponds to the magnetic inductive switch, and then the magnetic signal source and the magnetic inductive switch composed to the probe motion detection device. When the probe put back to the probe holder, the magnetic inductive switch will induce the magnetic signal source in the probe holder, and the magnetic inductive switch is on the closed mode and communicates with the host of the electronic thermometer by wire, then turns off the pre-heating process; Likewise, when the probe leave the probe holder, the magnetic inductive switch is not able to induce the magnetic signal source, and the magnetic inductive switch is on the open mode and communicates with the host of the electronic thermometer by wire, then initiates the pre-heating process.