RF Shielded Robotic Testing Platform for Telecom Devices
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Solution Overview
Problem
Traditional testing platforms for telecommunications devices with touch screens face interference from ambient radio frequency (RF) energy, which complicates the testing of these devices and makes it difficult to achieve repeatable and reliable results.
Innovation Solution
A radio frequency (RF) shielded robotic testing system that encloses the telecommunications device within an RF-shielded enclosure, using a robot to simulate user interactions and employ a power conditioner to filter out interfering RF energy, ensuring controlled and repeatable testing protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional testing platforms are used to test touch screen devices, then the testing process is simple, but ambient RF energy interferes with the testing accuracy
Solution Approach 1:
An RF-shielded enclosure is introduced as an intermediary barrier between the telecommunication device under test and the ambient RF environment. The enclosure acts as a mediator that allows controlled RF signals to reach the device while blocking unwanted ambient interference, thereby enabling accurate testing in the presence of RF energy.
Solution Approach 2:
The patent creates an RF-shielded enclosure that establishes a controlled, inert RF environment for testing. This enclosure isolates the device from external RF interference while maintaining the necessary RF conditions for testing, similar to how an inert atmosphere protects against unwanted chemical reactions.
2Adaptability or versatility
If robotic systems are used to simulate user interaction, then dynamic testing protocols can be implemented, but RF interference from the robot exacerbates the testing complexity
Solution Approach 1:
The robotic testing system and RF-shielded enclosure are merged into a single integrated platform. The robot operates within the enclosed space, combining the capabilities of robotic automation with RF shielding to create a unified system that achieves both dynamic testing and interference protection without requiring separate complex systems.
Solution Approach 2:
The RF-shielded enclosure serves multiple functions: it shields the device from ambient RF interference, contains the robotic system during operation, and provides a controlled environment for testing. This multi-functionality reduces overall system complexity by consolidating multiple requirements into a single structure.
3Object-affected harmful factors
If the telecommunication device is enclosed in an RF-shielded enclosure, then RF interference is blocked, but the enclosure may attenuate test signals
Solution Approach 1:
The RF-shielded enclosure is designed with differentiated RF properties in different regions. The enclosure provides strong shielding against ambient RF interference while incorporating specific openings, windows, or signal transmission mechanisms that maintain good RF signal transmission for testing purposes. Different parts of the enclosure have different RF characteristics optimized for their specific functions.
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 system allows for highly repeatable and efficient testing of telecommunications devices by shielding them from ambient RF energy, ensuring accurate performance metrics and reducing the impact of external interference.
Implementation Method 1
an RF-shielded robotic device testing platform may be used to perform repeatable testing of a device... By robotically initiating operations... within an RF-shielded enclosure which shields the telecommunication device from ambient RF energy
Data Source
AI summary
An RF shield for enclosing a robotic tester unit while testing mobile devices. In some embodiments, the RF shield includes at least two conductive RF shield layers separated by an insulator material. In some embodiments, an inner surface of the RF shield is further lined with a RF absorbing material to absorb EM radiation generated within the RF Shield enclosure. In some embodiments, the internal components required for testing, e.g. the robot, are powered via a power conditioner that removes from the power source frequencies above a threshold, e.g. 100 Hz, to eliminate RF signals absorbed into the power lines via radio towers and/or intentionally induced into the power lines to control power equipment.