Atmospheric electrostatic field acquisition system with charge

sensingTsvetan Marinov & Petya PopovaAdvising Professor: Mityo Mitev

Technical University – SofiaBulgaria

European Analog Design Contest 2013

Technical University – SofiaBulgaria

European Analog Design Contest 2013

What is Atmospheric electrostatic field?

SENSOR

European Analog Design Contest 2013

Project goals:

1. Develop “Field Mill” sensor

2. Use charge amplifier instead of I-V conversion

3. Ensure input range of +/-30kV/m

4. Implement on-board data logging

5. Implement live data stream and device control via radio

6. Ensure full weather proof enclosure

Technical University – SofiaBulgaria

European Analog Design Contest 2013

System architectureMCU: MSP430FR5739 ADC: ADS8519

Charge Amplifier: IVC102

Motor Driver: DRV8834Power Supply:TPS7A3001TPS7A4901REG101LP38690OPA369Royer convertor

Field Mill Sensor

Elec

tros

tatic

Fie

ld A

cqui

sitio

n Sy

stem

Technical University – SofiaBulgaria

European Analog Design Contest 2013

The PrototypeModularDesign

EasyMaintenance

EasyUpgrade

Functional

Technical University – SofiaBulgaria

European Analog Design Contest 2013

Acquired Data:

0 100 200 300 400 500 600 700 800 900 1000 1100

-14000-12000-10000

-8000-6000-4000-2000

0200040006000

10/06/2013 Thunderstorm - Sofia

Seconds [s]

Elec

tric

Fie

ld [V

/m]

Location: +42° 39’ 48.90”, +23° 22’ 55.17’’ (Sofia)Time: 16:45

Technical University – SofiaBulgaria

European Analog Design Contest 2013

Thank you for your attention!Questions?

Technical University – SofiaBulgaria