Wireless ECG Sensor Antenna Interference Immunity
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Solution Overview
Problem
Current wireless electrocardiographs are not immune to electrical interference from other devices, which affects the accuracy of cardiac signal measurements.
Innovation Solution
An optimized wireless electrocardiograph with an integrated sensor system comprising a receiving antenna, miniaturized signal amplifier, filtering unit, A/D converter, and wireless communication module, housed in a single container, along with a software-based filtering system, to minimize interference and enhance signal processing and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless electrocardiographs use traditional electrical connection methods, then signal transmission is stable, but they are susceptible to electrical interference from other devices
Solution Approach 1:
The patent replaces the traditional electrical cable connection system with a wireless electromagnetic transmission system. The ECG signal is converted to electromagnetic waves for transmission, eliminating the physical electrical connection that makes the device susceptible to electrical interference from other devices while maintaining stable signal transmission.
Solution Approach 2:
The patent introduces electromagnetic waves as an intermediary medium to transmit the ECG signal between the sensor and the receiving device. This intermediary transmission method avoids direct electrical connections that are vulnerable to interference, allowing the signal to pass through the environment without being affected by electrical noise from other devices.
2Volume of moving object
If wireless electrocardiographs use integrated sensor systems, then device compactness is improved, but signal processing complexity increases
Solution Approach 1:
The patent merges the signal amplifier, filtering unit, A/D converter, and wireless communication module into a single integrated sensor system housed in one container. This consolidation reduces the overall device volume and improves compactness while managing the complexity through functional integration rather than separate components.
Solution Approach 2:
The integrated sensor system performs multiple functions within a single device: signal amplification, filtering, analog-to-digital conversion, and wireless communication. This multi-functionality approach handles the signal processing complexity by combining all necessary processing stages in one universal unit, making the device both compact and self-sufficient.
3Object-affected harmful factors
If wireless electrocardiographs use software-based filtering, then interference reduction is improved, but processing time increases
Solution Approach 1:
The patent implements hardware-based filtering circuits that perform preliminary signal conditioning and noise reduction before the signal reaches the software processing stage. This preliminary action handles basic interference reduction in real-time, allowing the software-based filtering to focus on more complex interference patterns without excessive processing time requirements.
Solution Approach 2:
The patent employs continuous real-time signal processing where the filtering operations are performed continuously as the signal flows through the system. The hardware filters operate continuously at the signal level, and the software filters process the digitized signal in real-time, ensuring continuous interference reduction without significant delays or processing time losses.
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 solution effectively reduces interference from external devices, providing accurate and reliable cardiac signal measurements, suitable for continuous monitoring and use in challenging environments like surgical operations and sports medicine, with compact and user-friendly design.
Implementation Method 1
a receiving antenna (101) configured to be placed in contact with the body
Data Source
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AI summary
Wireless electrocardiograph (100, 200, 300) comprising an integrated sensor (101, 201, 301) consisting of a receiving antenna able to receive electromagnetic signals generated by the variations of the cardiac electrical vector; a signal amplifier (102, 202, 302); a filtering unit (103, 203, 303); an A/D converter (104, 204, 304) and a wireless communication module (105, 205, 305).