Gain Amplifier and ADC for Rogowski Coil differential Output
Posted: Tue May 15, 2018 10:33 amHey guys,
I am working on a current monitor that should measure current using Rogowski coils.
The coils (not chosen yet) have an output of e.g. 0.1 V/kA should be connected to the ESP8266 (huzzah feather wifi to be more precise) using a gain amplifier and an analog to digital converter. The ESP8266 then sends the sensor data to a RaspberryPi via MQTT. Integration will be done on the RaspberryPi.
As I have not worked with microcontrollers before I am not sure:
- what gain amplifier to use or how to choose one
- what ADC to use or how to choose
- what the signal to or from the GPIO pins will look like? If i have a digital signal, will it always be 0 or 1, and how can i then now the current?
Do you have any suggestions?
I am working on a current monitor that should measure current using Rogowski coils.
The coils (not chosen yet) have an output of e.g. 0.1 V/kA should be connected to the ESP8266 (huzzah feather wifi to be more precise) using a gain amplifier and an analog to digital converter. The ESP8266 then sends the sensor data to a RaspberryPi via MQTT. Integration will be done on the RaspberryPi.
As I have not worked with microcontrollers before I am not sure:
- what gain amplifier to use or how to choose one
- what ADC to use or how to choose
- what the signal to or from the GPIO pins will look like? If i have a digital signal, will it always be 0 or 1, and how can i then now the current?
Do you have any suggestions?