March 1st, 2012 
admin A Commercial real estate site visit is based on three pre-plan assumptions:
Observe potential Team members in action.
Research ; Networking Prior to your visit
-Identified list of key potential Team members
Planning The Visit
-What are my key questions about this market ; investment strategy?
Executing The Visit
Learn more about commercial real estate site visit plans from a proven Investor Education Resource:
Keywords: EPROM, Fuzzy logic, Real-Time, Control, Interface, microcontroller.
1.1 Incubating Conditions
Poor results are most commonly produced with improper control of temperature and humidity. Poor results also occur from improper ventilation, egg turning and sanitation of the machines or eggs. Prolonged periods of high or low temperatures will alter hatching success. High temperatures are especially serious. One that runs consistently cooler tends to produce late hatches.
Maintain a still-air incubator at 102 degrees F. to compensate for the temperature layering within the incubator. Obtain the proper temperature reading by elevating the bulb of the thermometer to the same height as the top of the eggs when the eggs are laying horizontal. The temperature is measured at the level where the embryos develop (at the top of the egg). Do not allow the thermometer’s bulb to touch the eggs or incubator.
- Transistors (BC 337- NPN, BC 557-PNP)
- Crystal oscillators
- Diodes
- Capacitor
- Resistor
10) The Temperature Sensor (LM 35)
- 4KB of Read-Only Memory (ROM)
- Four 8-bit I/O ports
- 256 x 8 of Random Access Memory
- Six Interrupt Sources
- External memory interface
- Standard 40-pin package
- Two 16-bit timer/ counters
The series resonant frequency:
- ; 1.1;
3.0; LM 35 TEMPERATURE SENSOR
The temperature sensor used in this project is the LM35. The LM35 measures temperature and gives an output voltage that is proportional to the Celsius temperature.
The sensor self-heating causes less than 0.1oC temperature rise in still air.
The general equation used to convert output voltage to temperature is:
Temperature(oC) = Vout; C 100oC/V.
So if Vout ;= 0.5V, then temperature = 0.5 x 100 = 50oC
Again, if the temperature controller is set to maintain the temperature below 30oC, then the maximum output voltage that will trip the relay is
The LM35 in measures temperature and gives an output voltage that is proportional to the Celsius temperature.
The sensor self-heating causes less than OO/OC temperature rise in still on.
Typical voltage value of the LM35 is 5V.
4.0 ANALOG TO DIGITAL CONVERTER ADC
An ADC is an electronic device that converts continuous signals to discrete digital numbers.
Most ADC’s are of a type known as linear which means that the range of input values that map to each output value has a linear relationship with the output value.
The ADC used is an IC, ADC 0804.
Pin 7 is also connected to ground.
; A 150Pf capacitor is connected from Pin A (Clock IN) to ground and the 10k ohm resistor from Pin 4 to Pin 19.
; If the input range of ADC is O-5V.
- resolution =; 255/5 = 0.02V;
; Resolution can be expressed electrically and expressed in bits.
EFSR = full scale voltage range
M = resolution in bits
; RESOLUTION
The rate of new values is called the sampling rate or sampling frequency of the converter.
ERRORS IN ADC
In case of syntax error in program code, program will not be compiled and HEX file will not be generated. The assembler is a software tool- a program-designed to simply the task of writing computer programs. It performs the clerical task of translating symbolic code into executable object code.
4.0 DEVELOPMENT OF THE PROGRAM
(ii); Assembling the Program:
; The microcontroller cannot understand programs entered in assembly language. When powered it displayed “set temperature”. The required temperature was entered using the increment button. Then the incubator attained the required temperature.