Specifications

119
 Soldering Gun
This electric tool is used to solder loose wire connections in a circuit or
network. To accompany the gun we must have solder thread to tap out or
heat solder filament.
5.6 Environment
The testing environment for the bulk of the time will be spent inside the Senior
Design II lab. If other components that we purchase require more workspace to
work then our group will go to selected off campus locations in order to construct
our HVAC control system. In coordination with our sponsors traveling to different
sites to test out their different systems might be necessary. When placing our
HVAC control system outside it must have a cover to protect its electrical
components in case of bad weather due to heavy amounts of precipitation.
Wherever we choose a place to work at it must have a high standard of safety
and procedures in case of electrical fire due to a wire being shorted or overrun
with too much input current as well as having an electrostatic discharge.
5.7 Final Specifications and Requirements
5.7.1 Final Specifications
Through collaboration with our sponsors, we have been able to produce a set of
specifications to go with our Efficient HVAC Control and Feedback System. The
final specifications we have been able to produce through our research and
design work have come out very similar to our initial specifications. We found
that the amount of parts available for electronics based projects such as ours is
so large that with enough searching almost any realistic specification can be met.
The final specifications we have come up with for the Efficient HVAC Control and
Feedback system are shown below in list and table form.
 Total cost of the system materials is below $1500 (including development
kits)
 Intersystem wireless data transmission (temperature and relative humidity
values) over a distance of 100 feet or more
 802.11b wireless connection to allow for remote control of system via mobile
device
 Delivery of 24V AC control voltage to all HVAC components
 Realistic temperature (0 ˚F - 110˚F) and relative humidity (0% - 100%)
measurements for exterior of building
 Measurements of interior temperature with an accuracy of +- 0.5 ˚C
 Measurements of exterior temperature with an accuracy of +- 0.5 ˚C
 Measurements of interior relative humidity with an accuracy of +- 5%
 Measurements of exterior relative humidity with an accuracy of +- 5%
 LCD touch screen interface with diagonal screen size of 7”
Table 35 shown below describes about the specifications between the main and
secondary microcontrollers for the HVAC control system.