Portable RF Sensor Array for Compact Object Characterization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The proliferation of mobile devices has created a need for compact and lightweight sensors that can characterize objects for various applications, including drug testing and imaging, which existing technologies have not adequately addressed.
Innovation Solution
A portable sensing system comprising a wideband electromagnetic transducer array, a transmitter unit for applying RF signals, and a receiver unit for receiving coupled RF signals, which can be configured as a microwave radar or capacitive sensor array, integrated into mobile devices to provide imaging and sensing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional sensors are used in mobile devices, then the sensing function can be provided, but the device size and weight increase
Solution Approach 1:
The patent combines multiple sensing functions (microwave radar, capacitive sensing) into a single integrated sensor unit that can be incorporated into mobile devices. This merging approach provides comprehensive sensing capabilities while minimizing the overall size and weight added to the device.
Solution Approach 2:
The sensor unit is designed to perform multiple functions including microwave radar for imaging, capacitive sensing for proximity detection, and potentially other sensing modalities. This multi-functionality allows a single compact unit to replace what would traditionally require multiple separate sensors, thereby reducing overall device weight while maintaining comprehensive sensing capabilities.
2Adaptability or versatility
If advanced sensing capabilities are added to mobile devices, then the functionality is enhanced, but the device complexity increases
Solution Approach 1:
The sensing system is segmented into distinct functional modules including a microwave radar subsystem with transmitter and receiver antennas, a capacitive sensing subsystem with sensor plates, and signal processing units. Each module performs a specific function and can be independently optimized, which manages overall system complexity while providing advanced sensing capabilities.
Solution Approach 2:
The patent employs intermediate signal processing stages that bridge the raw sensor outputs and the final processed information. These intermediary processing units simplify the complexity by systematically transforming complex raw signals into manageable data structures that can be easily interpreted and utilized by higher-level applications.
3Volume of moving object
If compact sensor design is implemented, then the device size is reduced, but the sensing precision may be compromised
Solution Approach 1:
The patent utilizes parameter changes in the electromagnetic domain by employing wideband frequency signals and varying signal characteristics to enhance the information content captured by the compact sensors. This allows the small sensor unit to achieve high measurement precision through sophisticated signal processing that extracts maximum information from the limited physical footprint.
Solution Approach 2:
The sensor system transitions from traditional spatial dimension scaling to utilizing the electromagnetic frequency dimension for achieving high precision. By operating across wide frequency bands and processing signals in the frequency domain, the compact sensor achieves imaging and characterization capabilities that would traditionally require much larger physical dimensions.
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 the characterization of objects, including drug authenticity and 3D imaging, through RF signal processing and capacitive sensing, enhancing the functionality of mobile devices with compact and lightweight sensor solutions.
Implementation Method 1
a wideband electromagnetic transducer array said array comprising a plurality of electromagnetic transducers; a transmitter unit for applying RF (radio-frequency) signals to said electromagnetic transducer array
Implementation Method 2
said plurality of electromagnetic transducers are capacitive sensor plates
Data Source
AI summary
A portable sensing system device and method for providing microwave or RF (radio-frequency) sensing functionality for a portable device, the device comprising: a portable device housing configured to be carried by a user; and a sensing unit within said housing con-figured to characterize an object located in proximity to the portable system, said sensing unit comprising: a wideband electromagnetic transducer array said array comprising a plurality of electromagnetic transducers; a transmitter unit for applying RF signals to said electromagnetic transducer array; and a receiver unit for receiving coupled RF signals from said electromagnetic transducers array.