Temperature Probe with Preheating and Separation Mechanism
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Solution Overview
Problem
Existing body temperature measuring devices face challenges in achieving a balance between high precision and rapid measurement, with issues such as long thermal equilibrium times, large measurement errors, and the need for repeated disinfection of the probe.
Innovation Solution
A body temperature measuring probe with a thermistor temperature sensor, a heating assembly for preheating, and a position control assembly to manage the heating assembly's contact and separation from the sensor, allowing for quick thermal equilibrium and improved measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a thermistor temperature sensor is used for accurate body temperature monitoring, then measurement precision is improved, but thermal equilibrium time increases
Solution Approach 1:
The heating assembly preheats the temperature sensor to a temperature close to the normal body temperature range (36-37°C) before measurement. This preliminary action reduces the temperature difference between the sensor and the measurement target, thereby shortening the thermal equilibrium time while maintaining measurement precision.
2Loss of time
If the temperature sensor is preheated to close to normal body temperature range, then measurement time is reduced, but device complexity increases
Solution Approach 1:
The heating assembly is designed as a separate, independently controllable component from the temperature sensor. This segmentation allows the heating function to be added without significantly complicating the overall device structure, as the heating assembly can be controlled by simple on/off switching based on temperature feedback.
3Reliability
If a disposable protective sleeve is added to avoid cross-infection, then reliability is improved, but thermal equilibrium time increases
Solution Approach 1:
The heating assembly preheats the temperature sensor before the sensor contacts the patient's body. This preliminary heating action compensates for the thermal insulation effect of the protective sleeve, allowing the sensor to reach thermal equilibrium faster even with the sleeve in place, thereby maintaining both reliability and reasonable measurement time.
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 enables the temperature sensor to quickly reach thermal equilibrium with a measured object, reducing measurement time and improving precision, while also allowing for independent disinfection of the probe and reducing environmental pollution.
Implementation Method 1
a heating assembly for controlling preheating of the temperature sensor
Implementation Method 2
the electromagnetic coil generates an electromagnetic field through current therein, and a magnetic force of the electromagnetic field acts on the moving shaft to drive the heating assembly to move
Implementation Method 3
thermal equilibrium between a human body and a temperature sensor is established by contact of the temperature sensor with the human body
Data Source
AI summary
A body temperature measuring probe comprises a temperature sensor, a heating assembly and a position control assembly; the position control assembly controls contact or separation between the heating assembly and temperature sensor. A method for measuring body temperature comprises: starting the temperature sensor; preheating the body temperature measuring probe to a preset temperature range; once the body temperature measuring probe is preheated to the preset temperature range, separating the heating assembly from the temperature sensor, and only making the temperature sensor participate in a thermal equilibrium process of the body temperature measurement; the temperature sensor working to obtain body temperature measurement data. Once preheating of the temperature sensor is completed, the heating assembly and temperature sensor are separated so the temperature sensor may quickly reach a thermal equilibrium with a measured target; measuring time is thus shortened and high-precision body temperature measurement may be achieved.