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Ntwali Yves Matumu

Harare Institute of Technology (HIT) is a technical college in Zimbabwe that was established in 1988 and granted degree-awarding status in 2005. It provides engineering programs and has a technology center that conducts research and commercializes technologies. One project developed by the center is a microcontroller-based egg incubator that uses sensors to monitor temperature and humidity and controls a motor to automatically rotate the eggs. The incubator hardware includes sensors connected to a microcontroller, along with heating, cooling, and motor control circuits. The software monitors temperature and humidity levels and controls the heating and motor based on set thresholds.

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INTRODUTION Harare institute of technology(HIT) is a Zimbabwean educational institution established since 1988 as a national vocational training centre involved into a Technical College offering electrical,mechanical and automotive engineering courses,producing artisans capable of operating and maintaining machinery in industry until 2005 when it was granted a degree awarding status HIT is themost energetic and responsive educational institution in Zimbabwe providing engineering programmes which are geared towards the production of industrial technical human resourse,project orientd,creative and highly qualified technologists for all the economic sectors. The Institute has a separate business entity called Insti-Holdins to enable the development and commercialisation of successful research and project from Institutes technology centre.We have fives companies under Instiholdings namely Institronics,Institools,Instisoft,Instifoods and instiherbs.
INTRO CONT. DESTINY To be the stimulant of scholarship in innovation CALLING To commercialise technology through professionalism rooted In integrity CAUSE To cultivate commitment towards technoprenuerial leadership CORE VALUES # Innovation # Leadership # Integrity # Commitment # Profesionalism
INSTI-HOLDINGS ORGANOGRAM Vice Chancelor Director of Technology Centre Institronics Chairman Instisofts Chairman Instifoods Chairman Instiherbs Chairman Institools Chairman
TECHNOLOGY CENTRE Director CNC Milling Trainer AutoCAD Trainer Lathe Trainer ORGANOGRAM PLC Trainer Hydraulics Trainer
The technology center conducts research, design, manufacture, develop, incubate, transfer, and commercialise technology for all sectors of the economy.Therefore it can be classified as operating under R&D industry The major products developed by the technology center include the solar based Vegetable Driers and the Microcontroller Based Egg Incubator.Other products from Insti-Holdings include: soy-yoghurt, soy-milk, soy-sour milk, ice cream and mineral water. Talking about corporate culture, there is a positive workmate relationship amongst the staff members and a high level of team work in execution of duties focusing on meeting one goal at a time.
HIT is still expanding and has engaged to promote and nurture the development of high school students for tertiary studies. The technology center offers visits to high school students in around the department workshops. By so doing the institute is improving its relationship with the society.
PROFESSIONAL AND PERSONAL DEVELOPMENT To be resourceful and innovative in technical aspects of the work including the ability to find and repair faults occurring in electronic system Microcontroller programming in C language. PCB board development Time management Effective communication Experience in the detailed design, implementation and testing of analogue and digital electronic circuits and systems (including microcontroller based systems).
PROJECT MICROCONTROLLER BASED EGG INCUBATOR
The project was designed to develop a microcontroller based system of an egg incubator mainly for chicken poultry production using the temperature and humidity sensors that measures the condition of the incubator and automatically rotate the position of the egg by use of DC motor. The project development was divided into three main sections namely mechanical,electronic and software designs. Incubation is the process by which birds hatch their eggs through the development of the embryo within the egg. Air ventilation is very important during the incubation process. While the embryo is developing, oxygen enters the egg through the shell and carbon dioxide escapes in the same manner The three main elements that are to be controlled for the incubator to produce good results are air ventilation, temperature and humidity
PROJECT DESIGN FLOW CHART
HARDWARE DESIGN LM35 sensor PIC16F877A limit switches Power supply HMZ333 sensor 16x2 LCD Fan&Heater circuit DC Motor circuit System block diagram
The major pats are master controller circuit, slave controller circuit, heater controller circuit and power supply circuit. The master controller circuit interfaces the temperature and humidity circuit, Liquid Crystal Display (LCD), heater and fan. For the slave controller circuit, it interfaces with DC motor circuit attached to the egg tray. The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius temperature.It does not require any external calibration or trimming to provide typical accuracies of賊14Cat room temperature and 賊34C over a full 55 to +150C temperature range.
Because of its output range, affordability and long term stability,the humidity sensor HMZ333 was used in this project The wiper DC motor was chosen because of its low speed rotation to eliminates the issues of gearing or speed control using Pulse Width Modulation (PMW). Also the wiper motor can carry heavy loads.
SOFTWARE DEVELPMENT The code was written and tested in parts/functions separately before the whole code was compiled. The main parts of the projects include the temperature(36-39degree celcius)and humidity Monitoring and Control codes and the DC motor control code. Temperature(degree celcius) Action of the code Below 36 Turn on the heater Between 36-39 Turn off the heater Above 39 Turn off the heater
TEMPERATURE MONITORING AND CONTROL FLOW CHART Start Initialize sensors Read temperature sensor Display Temp on LCD Turn ON heater NO Temp36? Temp36 Turn OFF heater YES NO YES NO B
HUMIDITY MONITORING AND CONTROL FLOW CHART B Display relative humidity NO Upper limit sensor RH C Turn ON humidifier Lower limit sensor RH Turn OFF humidifier NO YES YES
DC MOTOR CONTROL FLOW CHART B Auto switch High? STOP Motor & change diection Forward limit switch High? reversed limit switch High? C STOP Motor & change diection NO NO NO YES YES YES

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Presentation1

  • 2. INTRODUTION Harare institute of technology(HIT) is a Zimbabwean educational institution established since 1988 as a national vocational training centre involved into a Technical College offering electrical,mechanical and automotive engineering courses,producing artisans capable of operating and maintaining machinery in industry until 2005 when it was granted a degree awarding status HIT is themost energetic and responsive educational institution in Zimbabwe providing engineering programmes which are geared towards the production of industrial technical human resourse,project orientd,creative and highly qualified technologists for all the economic sectors. The Institute has a separate business entity called Insti-Holdins to enable the development and commercialisation of successful research and project from Institutes technology centre.We have fives companies under Instiholdings namely Institronics,Institools,Instisoft,Instifoods and instiherbs.
  • 3. INTRO CONT. DESTINY To be the stimulant of scholarship in innovation CALLING To commercialise technology through professionalism rooted In integrity CAUSE To cultivate commitment towards technoprenuerial leadership CORE VALUES # Innovation # Leadership # Integrity # Commitment # Profesionalism
  • 4. INSTI-HOLDINGS ORGANOGRAM Vice Chancelor Director of Technology Centre Institronics Chairman Instisofts Chairman Instifoods Chairman Instiherbs Chairman Institools Chairman
  • 5. TECHNOLOGY CENTRE Director CNC Milling Trainer AutoCAD Trainer Lathe Trainer ORGANOGRAM PLC Trainer Hydraulics Trainer
  • 6. The technology center conducts research, design, manufacture, develop, incubate, transfer, and commercialise technology for all sectors of the economy.Therefore it can be classified as operating under R&D industry The major products developed by the technology center include the solar based Vegetable Driers and the Microcontroller Based Egg Incubator.Other products from Insti-Holdings include: soy-yoghurt, soy-milk, soy-sour milk, ice cream and mineral water. Talking about corporate culture, there is a positive workmate relationship amongst the staff members and a high level of team work in execution of duties focusing on meeting one goal at a time.
  • 7. HIT is still expanding and has engaged to promote and nurture the development of high school students for tertiary studies. The technology center offers visits to high school students in around the department workshops. By so doing the institute is improving its relationship with the society.
  • 8. PROFESSIONAL AND PERSONAL DEVELOPMENT To be resourceful and innovative in technical aspects of the work including the ability to find and repair faults occurring in electronic system Microcontroller programming in C language. PCB board development Time management Effective communication Experience in the detailed design, implementation and testing of analogue and digital electronic circuits and systems (including microcontroller based systems).
  • 10. The project was designed to develop a microcontroller based system of an egg incubator mainly for chicken poultry production using the temperature and humidity sensors that measures the condition of the incubator and automatically rotate the position of the egg by use of DC motor. The project development was divided into three main sections namely mechanical,electronic and software designs. Incubation is the process by which birds hatch their eggs through the development of the embryo within the egg. Air ventilation is very important during the incubation process. While the embryo is developing, oxygen enters the egg through the shell and carbon dioxide escapes in the same manner The three main elements that are to be controlled for the incubator to produce good results are air ventilation, temperature and humidity
  • 12. HARDWARE DESIGN LM35 sensor PIC16F877A limit switches Power supply HMZ333 sensor 16x2 LCD Fan&Heater circuit DC Motor circuit System block diagram
  • 13. The major pats are master controller circuit, slave controller circuit, heater controller circuit and power supply circuit. The master controller circuit interfaces the temperature and humidity circuit, Liquid Crystal Display (LCD), heater and fan. For the slave controller circuit, it interfaces with DC motor circuit attached to the egg tray. The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius temperature.It does not require any external calibration or trimming to provide typical accuracies of賊14Cat room temperature and 賊34C over a full 55 to +150C temperature range.
  • 14. Because of its output range, affordability and long term stability,the humidity sensor HMZ333 was used in this project The wiper DC motor was chosen because of its low speed rotation to eliminates the issues of gearing or speed control using Pulse Width Modulation (PMW). Also the wiper motor can carry heavy loads.
  • 15. SOFTWARE DEVELPMENT The code was written and tested in parts/functions separately before the whole code was compiled. The main parts of the projects include the temperature(36-39degree celcius)and humidity Monitoring and Control codes and the DC motor control code. Temperature(degree celcius) Action of the code Below 36 Turn on the heater Between 36-39 Turn off the heater Above 39 Turn off the heater
  • 16. TEMPERATURE MONITORING AND CONTROL FLOW CHART Start Initialize sensors Read temperature sensor Display Temp on LCD Turn ON heater NO Temp36? Temp36 Turn OFF heater YES NO YES NO B
  • 17. HUMIDITY MONITORING AND CONTROL FLOW CHART B Display relative humidity NO Upper limit sensor RH C Turn ON humidifier Lower limit sensor RH Turn OFF humidifier NO YES YES
  • 18. DC MOTOR CONTROL FLOW CHART B Auto switch High? STOP Motor & change diection Forward limit switch High? reversed limit switch High? C STOP Motor & change diection NO NO NO YES YES YES