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Test Objective 1
Test Objective #1 Ensure the Cigarette Lighter is Producing Enough Power
Test Description The cigarette light must provide 10 volts of power throughout the shuttles
Test Conditions
Expected Results
entire route.
A multi-meter will be connected to the shuttle’s cigarette lighter and the
voltage of its output will be tested for the duration of the shuttles entire
route.
The cigarette lighter should provide a consistent power source of 10 volts.
Once it is confirmed that the shuttle is able to provide enough power to the system
during the entire route, it’s now time to test to ensure the system unit is converting this
power properly. This was done in a similar method as Test Objective 1, but this time the
unit was connected to the cigarette lighter. The power was then tested from the micro
controller board to ensure that not only is the shuttle providing enough power, but the
micro controller is converting this power correctly for usage.
Test Objective 2
Test Objective #2 Ensure the Power From the Cigarette Light is Converted Properly
Test Description The cigarette light converter must provide 5 volts of power throughout the
Test Conditions
Expected Results
shuttles entire route.
A multi-meter will be connected to the hardware unit’s cigarette lighter
converter and the voltage of its output will be tested for the duration of
the shuttles entire route.
The cigarette lighter converter should provide a consistent power source
of 5 volts.
The most important test dealing with power is how the system responds to power loss.
This power failure could come from different situations, such as the bus being turned off
as it waits for students to board. In the event that this occurs, the system not only
needed to be able to handle this power loss, but it also had to be able to recover quickly
once power was restored so it can continue to transmit data. This scenario did not need
to be tested directly on the shuttle; instead it can be done with any supply voltage that
meets the system unit's power specifications.
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