Radio Wave Measurement Device Using Vibrating Surface Modulation
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Solution Overview
Problem
Existing devices using milliwaves and microwaves for object detection suffer from broad beam spread and diffraction, leading to inaccurate detection of object position and size due to their wide directivity, often mistakenly detecting objects not on the direct line, and are costly to manufacture with limited antenna design options.
Innovation Solution
A measurement device incorporating a transmitter, a vibrating surface, and a receiver, where the vibrating surface modulates the radio waves, allowing the controller to extract specific signal components based on the vibration frequency, enabling precise detection by narrowing the detection range and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If radio waves such as milliwaves and microwaves are used for object detection, then objects hidden behind non-transparent materials can be detected, but the detection accuracy deteriorates due to broad beam spread and wide directivity
Solution Approach 1:
The patent introduces a vibrating surface that mechanically vibrates at a specific frequency to modulate the radio wave beam. This vibration creates a time-varying aperture effect that narrows the effective beam width and reduces diffraction spread, thereby improving detection precision while maintaining the ability to detect objects through non-transparent materials
Solution Approach 2:
The vibrating surface performs periodic mechanical oscillations at a predetermined frequency, creating periodic modulation of the radio wave transmission. This periodic action allows the receiver to extract signals at the specific vibration frequency, effectively filtering out background noise and improving signal-to-noise ratio for more accurate object detection
2Measurement precision
If the shapes or sizes of antennas and lenses are changed to prevent beam spread, then detection accuracy improves, but manufacturing cost and design complexity increase
Solution Approach 1:
Instead of modifying antenna or lens geometry to control beam spread, the patent uses mechanical vibration of a surface through which the radio waves pass. This approach achieves beam narrowing and reduced diffraction without requiring complex antenna designs or specialized lens shapes, thereby maintaining ease of manufacture while improving detection accuracy
Solution Approach 2:
The patent replaces the need for complex mechanical antenna structures or optical lenses with a simpler vibrating surface mechanism. By using vibration to control beam characteristics, the system avoids the manufacturing complexity and high costs associated with precision-machined antennas or specialized lens assemblies
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 approach allows for accurate and cost-effective detection of object presence, position, and size by isolating specific pathways and reducing beam spread, effectively detecting objects hidden behind non-transparent materials and improving measurement precision.
Implementation Method 1
a vibrating surface that vibrates mechanically
Implementation Method 2
on the basis of the signal of the radio wave reflected by the vibrating surface and received by the receiver
Data Source
AI summary
Disclosed is a measurement device that can accurately measure size, position, the presence of an object, and the like by means of a simple and low-cost method. Specifically, disclosed is a measurement device that is provided with: a transmitter that transmits radio waves; a vibrating surface that vibrates mechanically; a receiver that receives radio waves; and a controller that transmits radio waves from the transmitter, and on the basis of the signal of the radio waves reflected by the vibrating surface and received by the receiver, outputs information about a measured object on the pathway between the transmitter and the receiver with the vibrating surface therebetween.