a circuit that address the main consideration points, such as linearity
- Design a circuit that address the main consideration points, such as linearity, environmental temperature compensation, zero and gain adjustment and margins.
- Simulation and analysis: to test through simulation to ensure the parameters mentioned in point 1 to be satisfied, and further improvement may be required.
- Implement the circuit, tests or experiment to collect data, calibrate the system—directly or indirectly. Analyse the steady state and dynamic characteristics.
- Consider to design a circuit using a two-wire, single power supply loop (24V DC) system, with the output of 4-20mA as the output.
- Add smartness to the design. The following functions can be developed: on-line electronics calibration, faults identification and alarm, digital display and 4-20mA output and so on.
About the circuit:
Use (Arduino Uno) to add functions and features to make a smart system.
- Online calibration
- Human-machine interface
- Build a digital filter
- Temperature compensation
- Set up alarm, High, Low…
- Linearization
Find the best circuits (based your knowledge)—for example, you probably use Instrumentation amplifier (connected to a DC deflection bridge) with filters, with V/I converter. You may also consider the single power supply circuit with current as the output (4-20mA) current loop.
- You also have to consider AC Bridge with Lock-in amplifier (PSD)
- Look at the linearity of your system, how to improve the linearity of your measurement system—for example, a bridge with constant current supplied to Pt100.
a circuit that address the main consideration points, such as linearity
- Design a circuit that address the main consideration points, such as linearity, environmental temperature compensation, zero and gain adjustment and margins.
- Simulation and analysis: to test through simulation to ensure the parameters mentioned in point 1 to be satisfied, and further improvement may be required.
- Implement the circuit, tests or experiment to collect data, calibrate the system—directly or indirectly. Analyse the steady state and dynamic characteristics.
- Consider to design a circuit using a two-wire, single power supply loop (24V DC) system, with the output of 4-20mA as the output.
- Add smartness to the design. The following functions can be developed: on-line electronics calibration, faults identification and alarm, digital display and 4-20mA output and so on.
About the circuit:
Use (Arduino Uno) to add functions and features to make a smart system.
- Online calibration
- Human-machine interface
- Build a digital filter
- Temperature compensation
- Set up alarm, High, Low…
- Linearization
Find the best circuits (based your knowledge)—for example, you probably use Instrumentation amplifier (connected to a DC deflection bridge) with filters, with V/I converter. You may also consider the single power supply circuit with current as the output (4-20mA) current loop.
- You also have to consider AC Bridge with Lock-in amplifier (PSD)
- Look at the linearity of your system, how to improve the linearity of your measurement system—for example, a bridge with constant current supplied to Pt100.