Infrared Thermometer Mode Switching via Detachable Cover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing infrared thermometers that switch between forehead and ear temperature measurement modes are cumbersome due to manual operation or unreliable mechanical connections, and forehead temperature measurements are prone to environmental interference, leading to inaccuracies.
Innovation Solution
An infrared thermometer with a detachable forehead temperature measurement cover featuring a thermistor for mode switching and ambient temperature compensation, allowing for simple and reliable electrical connections through engaging protrusions and recesses, enabling automatic mode switching and improved calibration of forehead temperature readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual switch is used to switch between forehead and ear temperature measurement modes, then the switching operation is simple, but the operation becomes troublesome and time-consuming
Solution Approach 1:
The system automatically detects whether the forehead cover is installed and switches measurement modes accordingly without requiring manual user input. The control unit automatically selects ear temperature measurement mode when the cover is installed and forehead temperature measurement mode when it is removed, eliminating the need for manual switching operations.
Solution Approach 2:
The patent replaces the manual mechanical switch with an automatic detection system using electrical contacts and a control unit. The system uses electrical signals from the cover's contact points to trigger automatic mode switching, substituting mechanical manual operation with an automated electromechanical system.
2Extent of automation
If a mechanical connection structure is used to detect cover installation, then the switching control is automatic, but the structure becomes complicated and production becomes troublesome
Solution Approach 1:
The patent replaces complex mechanical detection structures with a simple electrical contact system. The cover contains electrical contacts that make contact with corresponding contacts on the thermometer body when installed, providing a straightforward electrical signal to the control unit without requiring complicated mechanical linkages or sensors.
Solution Approach 2:
The patent extracts the detection function from a complex mechanical structure and implements it through simple electrical contacts integrated into the cover. This separates the detection function into a simple electrical signaling mechanism rather than requiring a complex integrated mechanical system.
3Extent of automation
If a mechanical connection structure is used to detect cover installation, then the switching control is automatic, but mechanical contact reliability becomes problematic
Solution Approach 1:
The patent replaces unreliable mechanical contact detection with a more reliable electrical contact system. The electrical contacts in the cover provide direct electrical signaling to the control unit, which is more reliable than mechanical linkages or sensors, as electrical contacts have fewer failure modes and can be easily tested and replaced if needed.
4Ease of operation
If forehead temperature measurement is performed without ambient temperature compensation, then the measurement process is simple, but the measurement accuracy is greatly affected by ambient environment
Solution Approach 1:
The system uses the thermistor to detect ambient temperature and provides feedback to the control unit, which then compensates the forehead temperature measurement accordingly. The control unit reads the resistance value of the thermistor, determines the ambient temperature, and uses this information to correct the measured forehead temperature value, eliminating measurement errors caused by environmental factors.
Solution Approach 2:
The patent changes the measurement parameters by introducing ambient temperature as a compensating variable. The system measures both the forehead temperature and the ambient temperature (via the thermistor), then adjusts the final temperature reading based on the ambient conditions, transforming a single-parameter measurement into a multi-parameter compensated measurement.
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 simplifies mode switching and enhances the accuracy of forehead temperature measurements by using a thermistor for both mode detection and ambient compensation, reducing operational complexity and improving measurement reliability.
Implementation Method 1
The forehead temperature measurement cover has a thermistor and a second electrical contact connected to the thermistor
Implementation Method 2
An infrared thermometer that can switch a forehead temperature measurement mode and an ear temperature measurement mode
Data Source
AI summary
An infrared thermometer capable of switching a forehead temperature measurement mode and an ear temperature measurement mode and a switching method are disclosed. The infrared thermometer includes an infrared thermometer body and a forehead temperature measurement cover. The infrared thermometer body has a measuring probe and a printed circuit board. The printed circuit board is connected with a first electrical contact. The forehead temperature measurement cover has a thermistor and a second electrical contact. The forehead temperature measurement cover is detachably connected to the infrared thermometer body to selectively cover or expose the measuring probe for switching the forehead temperature measurement mode and the ear temperature measurement mode.