VEHPI-4: Calculate Battery life at max power consumption



Issue Information

Issue Type: Sub-task
 
Priority: Major
Status: In Progress

Reported By:
Ben Tasker
Assigned To:
Ben Tasker
Project: VehManPi (VEHPI)
Resolution: Unresolved

Created: 2013-11-30 12:28:04
Time Spent Working
Child of: VEHPI-2: Source Hardware


Description
Based on the power supply rating, we need to calculate the lifetime of the car battery if the system is running whilst the car is sat for a prolonged period.



Toggle State Changes

Activity


btasker changed status from 'Open' to 'In Progress'
btasker added 'Ben Tasker' to assignee
As part of testing, have removed the power supply from the powered hub.

Currently, running from the 1A power supply powering the Pi is

- WLAN adapter
- GPS dongle

Haven't yet tried a reboot to ensure that the GPS is able to get a fix with the available power (though it should be able to) but the maximum possible power consumption at the moment is 1A, meaning a 70A/h battery will power the system for 70 hours.

However, due to authentication issues with the access point (which is definitely the AP and not the Pi at fault) the Wifi isn't currently connected. Need to test that it can establish and maintain a connection.

Will need to run a similar test once VEHPI-13 is implemented