Concept of Operation
Advantages of Miniaturization the Cardiovascular Sensor System
- Implantability: long-term measurements(several days – years), occurrences of arrhythmias is ofter unpredictable, influence of nervous system can be studied, data is more meaningful and more realistic
- Reduced Interconnection Problems
- Easier Handling
- Improved Performance: mechanical load of cables on electrode is eliminated, noise reduction
Base of Sensor System Model Generation
Smart Christams-Tree Electrode
Model Elements:
Model Element-Sensors
Model Element-Sensors
Graph of Sensor Element Data
Interconnections
Integrated Circuits
Simulation Systems Description and Comparison
Biopotential Sensor Systems Ion-Selective Sensor Systems
Biopotential Sensor Graphs Ion-Selective Sensor
Simulation Results
- Diameter of biopotential electrode sites > 1µm
- Amplifier input resistance for ion-selective electrodes > 2.0 GΩ
- Amplifier input resistance for ion-selective electrodes > 4.8 GΩ
- Ion-selective membrane composition: product of concentration and diffusion coefficient for ion that determines dc-resistance > 1E-14 mol cm−1 s−1
Sensor System Noise Model Sensor System Noise
Sensor System Noise Model
Sensor System Noise
BBB-Circuit (4 Features) Impedance Plot of BBB-Circuit
Impedence of BBB
Simulation of Sunken Semicircles