POWER SYSTEM - CURRENT CONSUMPTION
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System is powered by 12 Vdc battery system.
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!POWER DISTRIBUTION JUNCTION BOXES
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!!Recording site
* Voltmeter 0 - 15 V dc
* Amperemeter 20 A dc
* Fuse 20 A slow, resetable
* Wrong polarity protection: None.
* Outputs:
** 3 x GEODES
** PC Laptop
** Blaster
** Radio
** DVS V Analog Module
* Size (W x H x D): 255 x 180 x 102 mm
* Material: Polycarbonate
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Attach:co2-jbox2.png<br />''Power distribution junction box, recording site (not finished).''
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!!Shooting site
* Voltmeter 0 - 15 V dc
* Amperemeter 10 A dc
* Fuse: 6.3 A slow, 5 x 20 mm
* Wrong polarity protection: Diode in reverse, causing fuse to blow.
* Outputs:
** Blaster
** Radio
* Size (W x H x D): 178 x 130 x 78 mm
* Material: Polycarbonate
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Attach:co2-jbox1.png<br />''Power distribution junction box, shooting site (not finished).''
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!CURRENT CONSUMPTION - RECORDING
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12 Vdc supply
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(:table border=1 cellpadding=1 cellspacing=0:)
(:cell align=center bgcolor=#eeeeee:) '''Item'''
(:cell align=center bgcolor=#eeeeee:) '''Current consumption [A]'''
(:cellnr align=center:) Laptop PC Dell Latitude D505
(:cell align=center:) 8.3
(:cellnr align=center:) GEODES 3 ea
(:cell align=center:) 2.8
(:cellnr align=center:) Radio Yaesu FT-2400
(:cell align=center:) Idle: 0.46<br />Transmitting:
* Low power: 3.0
* Medium power: 5.9
* High power: Not measured
(:cellnr align=center:) Blaster, I/O Encoder Mod. ENC-200
(:cell align=center:) Idle: 0.6
(:cellnr align=center:) DFS V Analog Module
(:cell align=center:) Unit only used separately, when checking geophone lines.
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!! Notes
Lap-top (not measured - estimated):
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Label on primary recording laptop - Dell Latitude D505 - says: "19.5 Vdc - 4.62 A", which means it draws 90 W power. We need DC/DC-converter that takes 12 Vdc system voltage as input and gives 19.5 Vdc out. Assuming 90% efficiency in converter, the power required by the PC and converter combined will be 90W/0.9 = 100 W. With 12 Vdc input to the converter, current consumption will be 100/12 =
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--->%red%'''8.3 A'''%%
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!!Total current consumption, recording site
!!! Idle
<pre class='escaped'>
Laptop: 8.3 A
Geode x 3: 2.8 A
Radio: 0.5 A
Blaster: 0.6 A
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Total: 12.2 A
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!!! Transmitting peak, low power radio output
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Laptop: 8.3 A
Geode x 3: 2.8 A
Radio: 3.0 A
Blaster: 0.6 A
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Total: 14.7 A
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!CURRENT CONSUMPTION, SHOOTING SITE
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12 Vdc supply
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(:table border=1 cellpadding=1 cellspacing=0:)
(:cell align=center bgcolor=#eeeeee:) '''Item'''
(:cell align=center bgcolor=#eeeeee:) '''Current consumption [A]'''
(:cellnr align=center:) Radio Yaesu FT-2400
(:cell align=center:) Idle: 0.46<br />Transmitting:
* Low power: 3.0
* Medium power: 5.9
* High power: Not measured
(:cellnr align=center:) Blaster, I/O Decoder Mod. DEC-200
(:cell align=center:) Idle: 0.6
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!!Total current consumption, shooting site
!!! Idle
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Radio: 0.5 A
Blaster: 0.6 A
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Total: 1.1 A
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!!! Transmitting peak, low power radio output
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Radio: 3.0 A
Blaster: 0.6 A
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Total: 3.6 A
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