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Updated: Jul 10, 2026
09:36
Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
Published on: June 25, 2021
Wireless platform for multi-channel analog measurements.
1Inst. of Electron., Tampere Univ. of Technol., Tampere, Finland. sami.m.heinisuo@tut.fi
Summary
This study presents a wireless measurement platform for implantable electrocardiogram (ECG) monitoring, offering inductive power and data transmission with multiple analog channels. The low-power, component-based system is ideal for wearable health technology.
Area of Science:
- Biomedical Engineering
- Wireless Sensor Networks
- Implantable Devices
Background:
- Wireless power and data transmission are crucial for implantable medical devices.
- Existing systems often face limitations in power consumption, data rate, or channel capacity.
- There is a need for low-power, versatile wireless measurement platforms for chronic in-vivo monitoring.
Purpose of the Study:
- To develop and characterize a novel wireless measurement platform for implantable applications.
- To enable multi-channel analog data acquisition using inductive power and data transfer.
- To demonstrate the platform's suitability for implantable electrocardiogram (ECG) measurements.
Main Methods:
- Utilized inductive coupling at 125 kHz for wireless power and data transmission.
- Implemented data transmission via magnetic field modulation.
- Integrated up to four 10-bit analog measurement channels with a sample rate of 237 samples/second.
- Designed the platform using commercially available components, excluding the antenna coil.
Main Results:
- Achieved a low power consumption of less than 1.5 mW at a 2.85 V supply voltage.
- Demonstrated the capability for multi-channel analog measurements, including single-channel ECG.
- Verified functionality with commercially available components for potential scalability and cost-effectiveness.
- Platform supports flexible channel allocation based on application needs.
Conclusions:
- The developed wireless measurement platform offers a low-power, versatile solution for implantable sensing.
- Inductive power and data transmission provide a robust wireless link for medical monitoring.
- The platform's modular design and low power consumption make it suitable for long-term in-vivo applications like ECG monitoring.
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