Multi-Sensor Infrared Probe Layout for Accurate Body Temperature Sensing
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Solution Overview
Problem
Existing infrared thermometers rely on single sensors for temperature measurement, leading to limited detection ranges and inaccurate readings due to positional changes during multiple measurements.
Innovation Solution
A multi-sensor synchronous non-contact measuring probe with multiple infrared sensors and optical channels, utilizing an MCU chip for compensation algorithms to improve accuracy by synchronously detecting skin temperature and averaging results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single infrared sensor is used for temperature measurement, then the device structure is simple, but the detection range is limited and measurement accuracy deteriorates due to positional changes
Solution Approach 1:
The patent divides the single sensor into multiple infrared sensors (at least two) arranged on the pressing block. Each sensor has its own optical channel, creating segmented detection zones that collectively cover a larger area and provide multiple measurement points for improved accuracy through compensation algorithms
Solution Approach 2:
The patent combines multiple infrared sensors into a single integrated probe structure with unified optical channels and shared MCU control. The sensors work together as a coordinated system, merging their individual detection capabilities to achieve enhanced measurement precision while maintaining structural compactness
2Area of stationary object
If multiple infrared sensors are arranged to expand detection coverage, then the detection range is improved, but the device structure and optical path design become more complex
Solution Approach 1:
The patent nests multiple optical channels within a single sensor fixing sleeve structure. The optical channels are arranged in parallel within the same housing, with each channel containing an infrared sensor. This nested arrangement expands the detection area while keeping the overall device structure compact and manageable
Solution Approach 2:
The patent arranges optical channels in different spatial dimensions (parallel or oblique angles) to expand the detection area in multiple directions. This multi-dimensional arrangement allows the sensors to cover a broader area without significantly increasing the linear dimensions of the probe
3Area of stationary object
If the optical channels are arranged in parallel, then the detection areas are staggered or overlapping to improve coverage, but the alignment precision requirements increase
Solution Approach 1:
The patent designs each optical channel with specific local characteristics (parabolic, triangular, elliptical, or stepped shapes) optimized for its particular detection zone. This allows each channel to be independently optimized while maintaining overall system performance, reducing the impact of alignment variations
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
Enhances the accuracy of human body temperature detection by compensating for positional variations using multiple sensors and optical path designs, ensuring precise temperature readings.
Implementation Method 1
The infrared thermometer uses an infrared receiving sensor to acquire the infrared radiation emitted by the human skin surface
Implementation Method 2
according to the law of blackbody radiation, all objects above absolute zero in nature are constantly radiating energy outward
Data Source
AI summary
The present disclosure discloses a multi-sensor synchronous non-contact measuring probe of an infrared thermometer, comprising a sensor fixing sleeve and a pressing block arranged at the inner end of the sensor fixing sleeve, wherein at least two infrared sensors are arranged on the pressing block, the sensor fixing sleeve is provided with optical channels with the same number as that of the infrared sensors, the detection surface of each of the infrared sensors is interfaced with a corresponding optical channel, and the infrared sensors are connected with MCU chips.