Infrared Temperature Sensor with Projection Module
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Solution Overview
Problem
Conventional non-contact temperature-sensing devices face challenges in readability due to low or high light intensity environments and miniaturization, which complicates the display of temperature measurements, especially for visually impaired individuals and increases the risk of incorrect readings.
Innovation Solution
An infrared temperature-sensing device with a projecting function, incorporating a temperature-sensing element, Fresnel lens, microprocessor, and projecting module, which focuses infrared radiation, projects temperature values onto a plane, allowing easy reading and adjusts light intensity based on ambient conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a display is used to show measured temperature, then temperature information is provided to users, but reading difficulty increases in low or high light intensity environments
Solution Approach 1:
The patent introduces a projecting module as an intermediary between the display and the user. Instead of directly viewing the display, users can project the temperature information onto a separate surface (such as their hand or arm), which provides a better viewing experience in various lighting conditions and eliminates reading difficulty caused by ambient light interference.
2Volume of moving object
If display size is reduced due to device miniaturization, then device portability is improved, but information display capability is reduced
Solution Approach 1:
The patent transitions the information display from a two-dimensional confined space (small display screen) to a larger projected surface in three-dimensional space. By projecting the temperature information onto an external surface, the display capability is significantly enhanced without increasing the physical size of the device, effectively solving the contradiction between miniaturization and information display capability.
3Ease of operation
If display intensity is increased to improve readability in bright environments, then visibility is improved, but energy consumption increases
Solution Approach 1:
The projecting module serves as a mediator that transfers information without requiring high-energy display intensification. By projecting onto an external surface, the system achieves good visibility in bright environments without needing to dramatically increase the energy consumption of the display itself, as the projected image leverages ambient light reflection rather than requiring high-intensity direct emission.
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
Enables convenient temperature measurement reading, particularly for visually impaired users, and prevents errors due to ambient light variations by projecting temperature values and adjusting light intensity accordingly.
Implementation Method 1
The temperature-sensing element is used for sensing infrared radiation of the measured body and derives a temperature signal
Implementation Method 2
The Fresnel lens is located between the measured body and the temperature-sensing element for focusing the infrared radiation on the temperature-sensing element
Data Source
AI summary
An infrared temperature sensing device with projecting function is using for sensing temperature of a measured body. The infrared temperature sensing device includes a temperature-sensing element, a Fresnel lens, a microprocessor and a projecting module. The temperature-sensing element is used for sensing infrared radiation and deriving at least a temperature signal. The Fresnel lens is located between the measured body and the temperature-sensing element for focusing the infrared radiation on the temperature-sensing element. The microprocessor is electrically connected to the temperature-sensing element. The projecting module is electrically connected to the microprocessor and projecting at least a body temperature value corresponding to the temperature signal.