CONTENTS
List of Abbreviations and Symbols
1.1 Temperature IC and Smart Sensors
1.2 Pressure IC and Smart Sensors and Accelerometers
1.5 Humidity Frequency Output Sensors
1.6 Chemical and Gas Smart Sensors
2 Converters for Different Variables to Frequency-Time Parameters of the Electric Signal
2.1 Voltage-to-Frequency Converters (VFCs)
2.2 Capacitance-to-Period (or Duty-Cycle) Converters
3 Data Acquisition Methods for Multichannel Sensor Systems
3.1 Data Acquisition Method with Time-Division Channelling
3.2 Data Acquisition Method with Space-Division Channelling
3.3 Smart Sensor Architectures and Data Acquisition
3.4 Main Errors of Multichannel Data-Acquisition Systems
3.5 Data Transmission and Error Protection
3.5.1 Essence of quasi-ternary coding
3.5.2 Coding algorithm and examples
3.5.3 Quasi-ternary code decoding
4 Methods of Frequency-to-Code Conversion
4.1 Standard Direct Counting Method (Frequency Measurement)
4.2 Indirect Counting Method (Period Measurement)
4.4 Method for Frequency-to-Code Conversion Based on Discrete Fourier Transformation
4.5 Methods for Phase-Shift-to-Code Conversion
5 Advanced and Self-Adapting Methods of Frequency-to-Code Conversion
5.1 Ratiometric Counting Method
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