Myographical Signal Processing Board for Micro:bit Robotic Control
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Solution Overview
Problem
Existing educational systems lack a convenient and efficient way to process myographical sensor signals for controlling robotic systems using an educational micro-controller unit like the Micro:bit system, due to the minute signal strength of myographical sensors requiring significant pre-processing.
Innovation Solution
A processing system is developed that includes electrode input sets, differential, rectifying, smoothing, and gain circuits to preprocess myographical signals, generating output signals suitable for controlling robotic systems through a Micro:bit Edge Connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If myographical sensors are used to control robotic systems, then robotic control capability is achieved, but signal processing complexity increases due to minute signal strength requiring significant pre-processing
Solution Approach 1:
The patent introduces a dedicated signal processing board as an intermediary component between the myographical sensors and the Micro:bit microcontroller. This processing board handles all the complex pre-processing operations (amplification, filtering, normalization) externally, allowing the simple Micro:bit to receive ready-to-use signals without requiring complex onboard processing circuitry.
Solution Approach 2:
The system is divided into separate functional modules: electrode sets for signal acquisition, a dedicated processing board for signal conditioning and pre-processing, and the Micro:bit for high-level control logic. This segmentation allows each component to be optimized independently, with the processing board handling complexity while the microcontroller focuses on control functionality.
2Measurement precision
If pre-processing conditioning is applied to myographical signals, then signal strength is sufficient for robotic control, but the number of processing stages increases
Solution Approach 1:
The patent combines multiple necessary processing stages (amplification, filtering, normalization) into a single integrated processing board. Rather than implementing each stage separately as discrete components, the board integrates these functions in a unified circuit that processes signals through all necessary stages in sequence, reducing overall system complexity while maintaining required signal precision.
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 effectively processes myographical signals to generate robust control signals for robotic systems, enabling efficient control of teaching robots or prosthetics using a Micro:bit system.
Implementation Method 1
one or more differential circuits each coupled to an associated one of the one or more electrode input sets and configured to generate a difference between the corresponding positive input and the negative input of the corresponding electrode input set to thereby generate one or more differential signals
Implementation Method 2
one or more gain circuits each coupled to an associated one or more differential signals and configured to apply a selective gain to the associated one or more differential signals to thereby generate one or more gained signals
Data Source
AI summary
A processing system for electromyography signals includes one or more electrode input sets, one or more differential circuits each coupled to an associated one of the one or more electrode input sets and configured receive a corresponding positive input and a negative input of the corresponding electrode input set to thereby generate one or more differential signals each associated, one or more gain circuits each coupled to an associated one or more differential signals and configured to apply a selective gain to the associated one or more differential signals to thereby generate one or more gained signals, and one or more output pins each coupled to an associated one or more gained signals, to thereby generate a first one or more output myography signals, wherein the one or more output pins each configured to be coupled to a corresponding pin on a Micro:bit Edge Connector.