CHAPTER 1
INTRODUCTION
This chapter discuss about the introduction, project objectives, project scopes, and problem statement of this project.
1.1 Introduction of the project
This project is built for a condenser in a car air-conditioning system. This condenser is controlled by a PIC with an appropriate programming using C Language. This project
covered electrical, mechanical, and electronic engineering field. By using a pressure switch, the condenser that connected to a PIC circuit will detect
the pressured gas from a compressor. It will trigger the pressure sensor and the PIC circuit will send a signal to the
condenser’s fan to switch it ON. Condenser is a device designed to condense a gas into a liquid. It also designed to
change the high pressure refrigerant vapor to liquid. The high pressure vapor is coming from the compressor. The condenser looks like a radiator, so it has parallel tubing and
tiny cooling fin. The fins help the air flowing through the condenser, removing the heat and change the heat into much cooler liquid. The function of the cooling fan is to suck
the outside air and flow through the condenser. So it is easier to cool the compressed air. For this Projek Sarjana Muda PSM, the whole system is controlled by
intelligent controller which is Peripheral Interface Circuit PIC compared to the old system that use only heat detector and timer to start up the cooling fan.
1.2 Project Objectives
To learn the basic concept of an air conditioner system.
To model and design a condenser system.
To design a controller for a condenser system.
To produce a complete system by combining both hardware and software part of
the project.
1.3 Project Scopes
To learn the basic process of condenser in a car air-conditioner system.
To learn the concept of microcontroller PIC PIC16F877A and micro-C
programming to get finest tune.
To learn the best way of programming the micro-controller using C language.
To determine the suitable sensor to control a condenser pressure sensorswitch.
To design an appropriate way to control the cooling fan using both PIC and
pressure sensor.
1.4 Problem Statements
