Friedrich Balck > Biosensor > Versuche > Seva-2

Beobachtungen:

SEVA-2

facts and data

Abb. 01:

Abb. 02:

Abb. 03:

Abb. 04:

Abb. 05: misprint: charger with 12 V AC (not DC!)

Abb. 06: plastic handle, some screws bend the bottom of the black box (FB)

Abb. 6a: bottom, aluminium plate under mechanical stress (FB)

Abb. 7: Y: 20 mV/div X: 0.5 s/div CH1: QSS, CH2: zero, 0 Volt
normal signal, output voltage: ~40 mV - 50 mV (FB)

Abb. 08: continues next figure

Abb. 09: SEVA-2 is moved up and down along the scale, axis of handle is horizontally (FB)

2016-07-29-1035-wohnzimmer-ge-vertikal-bewegung-001_g.jpg

Abb. 10: from t = 400 to t= 700 s: continously moving from h=120 cm to h= 210 cm - and back, and again ... at h=180 cm there is a minimum. at h=120 and h=210 a maximum,
end time 10:35
2016-07-29-1035-wohnzimmer-ge-vertikal-bewegung.labx (FB)

Abb. 11: moving up and down, outdoor, metric scale, axis of handle is horizotally (FB)

Abb. 12: SEVA is moved up and down along the scale from h=120 cm to h=240 cm
end time: 10:42
2016-07-29-1042-draussen.labx (FB)

2016-07-29-1058-draussen-alu-leiter-att-links-40digits-001_g.jpg

Abb. 13: outdoor, from h= 80 cm to h= 300 cm back and forth, attenuation CCW max.
end time 10:58
2016-07-29-1058-draussen-alu-leiter-att-links-40digits.labx (FB)

Abb. 13a: http://www.n3kl.org/sun/noaa_archive/2016/Jul_27noaa_elec_3d.gif

Abb. 13b: http://www.n3kl.org/sun/noaa_archive/2016/Jul_31/noaa_elec_3d.gif

Abb. 15: indoor, 1000 ms average, at t=12500 s the battery was low.
start time 13:03 end time 16:57
2016-07-29-1657-indoor.labx (FB)

Abb. 15a: Periodical structure with 1024 seconds or 17 minutes
2016-07-29-1657-indoor.labx (FB)

Abb. 15b: Periodical structure with 1024 seconds or 17 minutes (FB)

mechanical problems with plastic handle

Abb. 16: supporting the instrument either with the plastic handle or the wooden handle,
mechanical problems.
2016-07-29-2120-wood-plastic-handle.labx (FB)

Outdoor, influence of temperatur (sunlight)

Abb. 17: outdoor (FB)

Abb. 18: time dependent signal, at t= 4500 s sunlight comes over the sensor.
start time 7:53 end time 09:13
2016-07-30-0913-outdoor-sun.labx (FB)

Abb. 19: time dependent, sun warms the instrument, start time:17:58, end time 20:17
temperature goes down on evening
2016-07-30-2017-outdoor-sun.labx (FB)

crossing water vein

Abb. 20: wooden buggy, crossing a water vein, moving south north (FB)

2016-07-31-1018-cradle-water-vein-attenuation-001_g.jpg

Abb. 21:wooden buggy, different positions of the potentiometer for attenuation, CW and CCW
at t=690s video when crossing the water vein, at t=920s crossing again.
2016-07-31-1018-cradle-water-vein-attenuation.labx (FB)

2016-07-31-1018-cradle-water-vein-attenuation-002_g.jpg

Abb. 21a: Zoom,
2016-07-31-1031-cradle-water-vein-attenuation-cw-max.labx (FB)

2016-07-31-1031-cradle-water-vein-attenuation-cw-max-001_g.jpg

Abb. 22: wooden buggy, crossing the water vein, twice and a half, at t=120 s stop of movement over water vein
2016-07-31-1031-cradle-water-vein-attenuation-cw-max.labx (FB)

Abb. 23: buggy, moving east-west (FB)

2016-07-31-1159 cradle-crossing-garden-east-west-east-001_g.jpg

Abb. 24: crossing garden from east to west and back,
t = 0 to 120 crossing; t > 120 s : no action; end time: 11:59
2016-07-31-1159 cradle-crossing-garden-east-west-east (FB)

2016-07-31-1159 cradle-crossing-garden-east-west-east-002_g.jpg

Abb. 25: Zoom; t = 30 to t= 60: east-west; t=60 to t = 100: west-east.
2016-07-31-1159 cradle-crossing-garden-east-west-east(FB)

Abb. 26: 2016-08-01, outdoor, handle axis horizontally (FB)

Abb. 27: 180 degree turned around vertical axis, 2016-08-01 20:52 (FB)

Abb. 28: 2016-08-01 20:53 after turning 180 degree (FB)

Abb. 29: outdoor, handle axis horizontally, 500 ms average,
at t= 6200 s --> the system was turned 180 degree around a vertical axis (see pictures 26 and 27)
The temperature decreased during end of the day from 18°C to 13°C, sundown ~ 21:00
start time: 19:04, end time: 22:31
2016-08-01-2231-outdoor-vertical-180-002 (FB)

ELF-Signal

Abb. 30: ELF-Signal indoor
2016-08-02-1300-elf-signel-indoor-001_g.jpg (FB)

Abb. 31: FFT, ELF-Signal indoor
2016-08-02-1300-elf-signel-indoor-002_g.jpg (FB)

Abb. 32: over water vein (FB)

Abb. 32a: ELF-Signal, outdoor, over water vein, signal clipped at -100 mV
2016-08-02-1321-elf-signel-outdoor-water-vein-001_g.jpg

Abb. 33: FFT, ELF-Signal, outdoor, over water vein
2016-08-02-1321-elf-signel-outdoor-water-vein-002_g.jpg

Abb. 34: ELF-Signal, outdoor, 2 m near water vein, signal clipped at -100 mV
2016-08-02-1325-elf-signal-outdoor-2m-near-water-vein-001_g.jpg

Abb. 35: FFT, ELF-Signal, outdoor, 2 m near water vein
2016-08-02-1325-elf-signal-outdoor-2m-near-water-vein-002_g.jpg

Abb. 36: ELF-Signal, outdoor, 4 m far from water vein, signal clipped at -100 mV
2016-08-02-1329-elf-signal-outdoor-far-water-vein-001_g.jpg

Abb. 37: postion with 9 Hz signal??? (FB)

Abb. 37a: FFT, ELF-Signal, outdoor, 4 m far from water vein, 9 Hz Signal
2016-08-02-1329-elf-signal-outdoor-far-water-vein-002_g.jpg

Abb. 38: ELF-Signal, outdoor, 3.5 m far from water vein, signal clipped at -100 mV
2016-08-02-1335-elf-signal-outdoor-far-water-vein-001_g.jpg

Abb. 39: FFT, ELF-Signal, outdoor, 3.5 m far from water vein
2016-08-02-1335-elf-signal-outdoor-far-water-vein-003_g.jpg

Abb. 40: near house (FB)

Abb. 40a: ELF-signal, outdoor, near house, signal greater than 100 mV, not clipped
2016-08-02-1358-elf-signal-outdood-near-house-001_g.jpg

Abb. 41: FFT, ELF-signal, outdoor, near house
2016-08-02-1358-elf-signal-outdood-near-house-002_g.jpg

Influence of power line, 50 Hz

Abb. 42: QSS-Signal, 5 ms sample
2016-08-02-1603-living-room-noise-001_g.jpg (FB)

Abb. 43: FFT, 50 Hz
2016-08-02-1603-living-room-noise-002_g.jpg

Rotation, turn table

Abb. 44: The wooden handle can be attached in steps to 90 degree. (FB)

Abb. 45: plastic rails for linear movement (FB)

Abb. 46: Plastic tube as a long handle with counterweight - usefull for holding in hand. (FB)

Abb. 47: Works as a turn table, 1 m heigth (FB)

Abb. 48: works as a turn table, 2 m heigth (FB)

Abb. 49: works as a turn table, 3 m heigth (FB)

Literatur: b-literatur.htm