Week 12 Data Acquisition and simulation of MEMS sensors
Introduction to Equipments: DAQ
Here are the key points from your session on the National Instruments Virtual Bench:
### Overview
- **Purpose**: The National Instruments Virtual Bench serves to provide required signals for
fabricated sensors, including voltage generation and data recording.
- **Multi-functionality**: Acts as a function generator, oscilloscope, logic analyzer, and variable
power supply.
### Connectivity
- **Modes of Communication**: Can connect to a PC via USB or Wi-Fi.
- **Software Control**: Automatically opens software upon connection for controlling
functionalities.
### DC Power Supply
- **Channels**: One channel provides 0 to 6 volts; another provides ±25 volts.
- **Applications**: Suitable for systems requiring positive and negative voltages, such as
operational amplifiers.
,### Functionality Demonstrations
1. **Oscilloscope**:
- Channels (CH1 and CH2) for signal observation.
- Features like auto setup and adjustable time scales.
2. **Function Generator**:
- Generates various waveforms (sine, square, triangular).
- Amplitude and frequency can be adjusted via software.
3. **Multimeter Functionality**:
- Measures DC/AC voltage, current, resistance, diode testing, and continuity.
### Data Acquisition
- **Screenshot and Data Export**: Captures screen data and exports to CSV files for analysis.
### Practical Applications
- **Signal Generation**: Excites sensors and performs signal conditioning.
,- **Versatile Use**: Combines power supply, multimeter, oscilloscope, and function generator in
one unit.
### Conclusion
- **Laboratory Utility**: Essential for fabricating devices and sensors, providing power, signal
conditioning, and data acquisition.
This summary encapsulates the main functionalities and benefits of the National Instruments
Virtual Bench for your cleanroom facility.
Introduction to Equipments: DAQ contd…
Here are the key points from your session on the Compact DAC (C-DAC):
### Overview
- **Compact DAC (C-DAC)**: Advanced data acquisition unit with better accuracy, resolution,
and sampling rate compared to previous devices.
- **Applications**: Ideal for acquiring small signals, particularly in sensor measurements.
### Setup and Components
- **Anti-Vibration Table**: Used to minimize vibration effects on measurements.
- **Modular Design**: Various modules can be interchanged on the chassis for different
functionalities:
- **Analog Input Channels**: For current and voltage inputs, with onboard ADCs and
amplifiers.
- **Bridge Circuit Support**: Supports half and full bridge configurations for strain gauges and
force sensors.
- **Analog Output**: 16-bit output capable of 20 mA current.
### Connection and Configuration
- **Network Connectivity**: Connects to a PC via LAN for data visualization and acquisition.
- **Differential Input Measurement**: Essential for applications using bridge configurations to
measure differential voltage.
### Data Acquisition Process
, 1. **Hardware Connection**:
- Connect signals from a power supply to the Compact DAC input channels.
- Ensure correct connections using spring clips for reliable contact.
2. **Software Interface**:
- **NI MAX**: Used to test and visualize the connected C-DAC modules.
- **LabVIEW Integration**: For advanced data acquisition and processing.
- **Test Panels**: Verify module functionality and signal acquisition.
### Signal Generation and Visualization
- **Voltage Signal Generation**: Signals can be generated from a virtual bench and acquired by
C-DAC.
- **Continuous Data Acquisition**: Adjust sampling rates to visualize signal changes effectively.
### LabVIEW Programming
- **Data Processing**: Create algorithms to process acquired signals.
- **User Interface**: Display acquired data using gauges and meters on the front panel.
- **Flexibility**: LabVIEW allows for various functionalities like loops, arrays, and controls for
comprehensive data management.
### Conclusion
- **Multi-functional Use**: The Compact DAC serves for acquiring, monitoring, and processing
sensor signals, enhancing laboratory capabilities in data acquisition and analysis.
This summary highlights the functionalities, setup, and advantages of the Compact DAC in your
lab.
Electronic Module for Gas sensor
Certainly! Here’s a summary of the key points from the lecture on gas sensors and signal
conditioning circuits:
### Overview of Sensors
- **Types of Sensors**: There are various types, including thermal, pressure, force, piezo
resistive, and gas sensors, among others.
- **Focus on Gas Sensors**: The lecture specifically addresses gas sensors, their principles,
and applications.
### Applications of Gas Sensors
- **Industrial Use**: Monitoring gas leaks (e.g., CO2 leaks in pipelines).
- **Medical Diagnostics**: Analyzing breath for volatile organic compounds (VOCs) to detect
diseases (e.g., diabetes, cancer) through non-invasive methods.
### Volatile Organic Compounds (VOCs)
Introduction to Equipments: DAQ
Here are the key points from your session on the National Instruments Virtual Bench:
### Overview
- **Purpose**: The National Instruments Virtual Bench serves to provide required signals for
fabricated sensors, including voltage generation and data recording.
- **Multi-functionality**: Acts as a function generator, oscilloscope, logic analyzer, and variable
power supply.
### Connectivity
- **Modes of Communication**: Can connect to a PC via USB or Wi-Fi.
- **Software Control**: Automatically opens software upon connection for controlling
functionalities.
### DC Power Supply
- **Channels**: One channel provides 0 to 6 volts; another provides ±25 volts.
- **Applications**: Suitable for systems requiring positive and negative voltages, such as
operational amplifiers.
,### Functionality Demonstrations
1. **Oscilloscope**:
- Channels (CH1 and CH2) for signal observation.
- Features like auto setup and adjustable time scales.
2. **Function Generator**:
- Generates various waveforms (sine, square, triangular).
- Amplitude and frequency can be adjusted via software.
3. **Multimeter Functionality**:
- Measures DC/AC voltage, current, resistance, diode testing, and continuity.
### Data Acquisition
- **Screenshot and Data Export**: Captures screen data and exports to CSV files for analysis.
### Practical Applications
- **Signal Generation**: Excites sensors and performs signal conditioning.
,- **Versatile Use**: Combines power supply, multimeter, oscilloscope, and function generator in
one unit.
### Conclusion
- **Laboratory Utility**: Essential for fabricating devices and sensors, providing power, signal
conditioning, and data acquisition.
This summary encapsulates the main functionalities and benefits of the National Instruments
Virtual Bench for your cleanroom facility.
Introduction to Equipments: DAQ contd…
Here are the key points from your session on the Compact DAC (C-DAC):
### Overview
- **Compact DAC (C-DAC)**: Advanced data acquisition unit with better accuracy, resolution,
and sampling rate compared to previous devices.
- **Applications**: Ideal for acquiring small signals, particularly in sensor measurements.
### Setup and Components
- **Anti-Vibration Table**: Used to minimize vibration effects on measurements.
- **Modular Design**: Various modules can be interchanged on the chassis for different
functionalities:
- **Analog Input Channels**: For current and voltage inputs, with onboard ADCs and
amplifiers.
- **Bridge Circuit Support**: Supports half and full bridge configurations for strain gauges and
force sensors.
- **Analog Output**: 16-bit output capable of 20 mA current.
### Connection and Configuration
- **Network Connectivity**: Connects to a PC via LAN for data visualization and acquisition.
- **Differential Input Measurement**: Essential for applications using bridge configurations to
measure differential voltage.
### Data Acquisition Process
, 1. **Hardware Connection**:
- Connect signals from a power supply to the Compact DAC input channels.
- Ensure correct connections using spring clips for reliable contact.
2. **Software Interface**:
- **NI MAX**: Used to test and visualize the connected C-DAC modules.
- **LabVIEW Integration**: For advanced data acquisition and processing.
- **Test Panels**: Verify module functionality and signal acquisition.
### Signal Generation and Visualization
- **Voltage Signal Generation**: Signals can be generated from a virtual bench and acquired by
C-DAC.
- **Continuous Data Acquisition**: Adjust sampling rates to visualize signal changes effectively.
### LabVIEW Programming
- **Data Processing**: Create algorithms to process acquired signals.
- **User Interface**: Display acquired data using gauges and meters on the front panel.
- **Flexibility**: LabVIEW allows for various functionalities like loops, arrays, and controls for
comprehensive data management.
### Conclusion
- **Multi-functional Use**: The Compact DAC serves for acquiring, monitoring, and processing
sensor signals, enhancing laboratory capabilities in data acquisition and analysis.
This summary highlights the functionalities, setup, and advantages of the Compact DAC in your
lab.
Electronic Module for Gas sensor
Certainly! Here’s a summary of the key points from the lecture on gas sensors and signal
conditioning circuits:
### Overview of Sensors
- **Types of Sensors**: There are various types, including thermal, pressure, force, piezo
resistive, and gas sensors, among others.
- **Focus on Gas Sensors**: The lecture specifically addresses gas sensors, their principles,
and applications.
### Applications of Gas Sensors
- **Industrial Use**: Monitoring gas leaks (e.g., CO2 leaks in pipelines).
- **Medical Diagnostics**: Analyzing breath for volatile organic compounds (VOCs) to detect
diseases (e.g., diabetes, cancer) through non-invasive methods.
### Volatile Organic Compounds (VOCs)
