Magnetic Induction Probe Cap for Infrared Thermometer Mode Switching
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Solution Overview
Problem
Existing infrared thermometers face accuracy issues due to electronic element and battery state dependencies, and mechanical complexities in automatic cap identification for dual ear and forehead temperature measurements, especially in varying ambient conditions and for users with otitis media.
Innovation Solution
An infrared thermometer with a magnetic induction identification probe cap, featuring a magnet block on the cap's inner wall and a magnetic induction element in the thermometer body, which outputs control signals for mode switching between forehead and ear canal temperature measurements, eliminating the need for mechanical switches and enhancing assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mechanical switches or tactile switches are used for cap identification and mode switching, then the thermometer can recognize cap status and switch between forehead and ear temperature measurement modes, but the device complexity increases due to additional accessories and mechanical structures that may frequently malfunction
Solution Approach 1:
The patent replaces mechanical switches and tactile switches with a magnetic field-based detection system. A magnet is embedded in the cap, and a magnetic sensor on the thermometer body detects the magnet's presence to identify cap status and trigger mode switching. This substitution eliminates complex mechanical structures while maintaining the adaptability of switching between forehead and ear temperature measurement modes
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the cap and the thermometer's control system. The magnet in the cap generates a magnetic field that the magnetic sensor detects, serving as an indirect communication mechanism. This intermediary approach avoids direct mechanical contact and complex switching mechanisms while enabling reliable cap identification and mode switching
2Extent of automation
If multiple accessories and mechanical structures are added for automatic cap identification, then the thermometer can automatically recognize cap status, but the assembly process becomes more troublesome and the reliability decreases due to frequent mechanical failures
Solution Approach 1:
The patent replaces unreliable mechanical identification structures with a magnetic field-based detection system. The magnet embedded in the cap and the magnetic sensor on the thermometer body create a contactless, wear-free identification mechanism that maintains high reliability while achieving automatic cap recognition
Solution Approach 2:
The magnet embedded in the cap serves as a self-contained identification element that automatically signals its presence to the thermometer's magnetic sensor when the cap is attached. This self-service mechanism eliminates the need for complex external detection systems or manual intervention, achieving reliable automatic cap identification through the cap's own magnetic field
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 solution provides accurate, efficient, and easier operation for dual temperature measurements, with longer service life and improved robustness against ambient conditions, by using magnetic induction for cap identification and mode switching.
Implementation Method 1
magnetic induction between the magnet block and the magnetic induction element enables the magnetic induction output control signals
Data Source
AI summary
The present disclosure discloses an infrared thermometer for a magnetic induction identification probe cap, including the body of the infrared thermometer, at an upper end of which is a temperature probe designed with a cap, of which an inner side wall is beset with a magnet block; in the infrared thermometer body ata lower end of the temperature probe is a magnetic induction element connected with a main control unit of the body of the infrared thermometer; when the cap covers the temperature probe or is removed there-from, the magnetic induction between the magnet block and the magnetic induction element enables magnetic induction output control signals. For the infrared thermometer applicable for both forehead temperature measurement and ear canal temperature measurement, the magnetic induction identification probe cap switches between a forehead temperature measurement mode and an ear canal temperature measurement mode.