Project Description #3

Title:                                                                                  AC Control

Description:

A central thermostat with ability to control temperature in different areas.

Objectives:

Address the problem of different cooling needs in different areas

Monitor each climate zone via master control, but control temperature in each zone from either the master control or slave controls in each zone.

Compensate for any pressure developed which may be damaging to HVAC system

Specifications:

Three to four measurement areas

Master Control

Readout of desired and actual temperature in each area

Ability to change desired temperature for each area

Controls mechanism to increase cold air flow to areas that need cooling and reduce cold air flow to areas that are at desired temperature

Monitor overall pressure of entire system

Diagrams:

 

 

 

 

Cost Estimate:

                                                μP                                            $15

                                                Display                         $10

                                                Keypad                                    $15

                                                Switch relay (24V)                   $10

                                                Servo(4)                                   $10 ea.

                                                Thermocouple(4)                      $5-20 ea.

                                                Manometer                               $15

 

Schedule:

 

            Locate appropriate thermocouple, display, and thermostat controls

 

            Design plans for a full scale duct equipped with a rotating air flow diaphram

            Determine appropriate servos for controlling the diaphram within the duct

 

            Begin building duct equipped with servo and diaphram

 

            Begin design of master control

 

            Begin design of slave control

 

            Integrate master control w/power supply, thermocouple

 

            Integrate slave control w/power supply, thermocouple

 

            Integrate servo w/power supply, manometer, and master control

 

            Assemble and test entire system

 

            Test and trouble shoot