Automated Smart Seminar Hall System Using PIC Microcontroller

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International Journal of Emerging Technology and Advanced Engineering

Website: www.ijetae.com (ISSN 2250-2459, UGC Approved List of Recommended Journal, Volume 8, Issue 5, May 2018)

157

Automated Smart Seminar Hall System Using PIC

Microcontroller

Suchita Khare

1

, Ujwala Matkar

2

, Shital Kale

3

, Prof. S. M. Turakne

4 1,2,3

UG Student, 4Senior Professor, Department of Electronics and Telecommunication Engineering, PRES’S PREC Loni,

Maharashtra, India

Abstract— In this era of digital revolution, we are surrounded by smart devices that are capable of making decisions on their own without much human arbitration. Now a day automation systems have become widespread in several industries by playing an important role in controlling many operations. We live in the world of automation how most of the systems have become automated, such as industrial automation, automation in homes and alternative business sectors.

Here our seminar hall can also be made smart by implementing a real-time automation system that monitors parameters like light intensity, temperature, power consumption and human presence. Seminar hall automation may include centralized control of electrical devices including lightings, appliances and security.

In this project we will use PIC microcontroller which is central unit of the system. Different sensors can be used and according to that output signals are generated by the controller. IR sensor is used to count how many people go IN or go OUT from seminar hall. The count will be display on LCD display. In this way we can get easily idea about how much seats are available in seminar hall. Temperature sensor also there to check surrounding temperature and according to that temp, fan will ON/OFF automatically. LDR sensor is to sense light intensity according to the light intensity Bulb/Tube will turn ON/OFF. When projectors start curtains automatically gets close. Whole system should be operated on the power supply of 12V. The outputs can drive by using Relays.

Keywords— Digital Revolution, Automation, Microcontroller, Sensor, Relay, LCD display

I. INTRODUCTION

Electricity is one of essential resources in this century. It is the major source of power for most of the country's economic activities. Wastage of electricity is one of the main problems which we are facing now a day. In our home, school, colleges or industry we see that fan or lights are kept on even if there are nobody in the room or area. This happen when we are in hurry and that‗s why we often forgot to turn off the lights or fans. To avoid all such conditions we have designed this project called Automated Smart Seminar Hall System.

Moving towards energy sustainability will require modifications not only in the way energy is supplied, but also in the way it is used as well. Many times we do not turn off the light or fan at the time of deserting the room, thus electricity is wasted. By raising public awareness we can reduce the wastage of electricity. But it is not enforced due to carelessness. In this case we can use Seminar Hall Automation System. This work can be used in various rooms like seminar hall, conference hall where the capacity of room is limited and should not be exceeded. This work will display the actual number of persons inside the room. Automatic Room light and fan Controller with Visitor Counter can be used in class rooms, study rooms in colleges. This work can also be used in our home because many times we come out of our bedroom or any other room without turning off the room light. It is used only when one single person cuts the rays of the sensor hence it cannot be used when two person cross simultaneously. Seminar hall automation is the automatic or semi-automatic control and monitoring of appliances such as Fans, Curtains and Projector etc. The objective of our proposed system is to save the energy or power, used in seminar halls where the lighting is very essential for the people.

II. PROBLEM STATEMENT

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III. METHODOLOGY

The implementation of project can be done in three sections. First we prepare the basic idea and according to it the overall concept of the project is developed. Second thing is that we have to select the hardware components according to our need. According to requirement of project the specification are described and range of components can be decided. In this project we used different types of sensor according to their function. Based on the distance range the range of sensors can be computed. The microcontroller is select on the basis of its features according to our requirement. Third stage is the actual implementation of the project combining hardware and software. The programming of microcontroller is done by using the software. In hardware implementation, the voltage and current levels of different components can be matched.

Another part is tools used in the project. There are many software and hardware tools we used here. Software tools include the software used for programming and used for design of PCB. Hardware tools include the microcontroller IC, different types of sensors, relay driver circuits, switches etc. We use IR sensor to detect obstacle during people goes in seminar hall or get out from seminar hall. Here we are using one infrared transmitter receiver pair. Another sensor used is LDR, according to intensity of light, resistance of LDR varies. The LM 35 temp sensor to sense surrounding temperature, according to that temp, fan will operated. Relay driver uses to switch ON/OFF output equipment like fan, bulb, curtains etc. When controllers PIN where relay gets connected become high relay well be turns ON vice versa relay turns OFF.

The output of sensors is given to the PIC microcontroller as I/P, according to the status of input the microcontroller gives the output to the Relay driver circuit. Relay Driver operates the each device connected to it.

IV. PROPOSED SYSTEM

This system consists of three sections:

1. Input section.

2. Central processing unit. 3. Output section.

The input section consists of IR sensor, Temperature sensor, LDR and switches. One infrared transmitter receiver pair is use to detect obstacle during people goes in seminar hall or get out from seminar hall. Another sensor used is LDR, according to intensity of light, resistance of LDR varies. The cell resistance falls with increase in light intensity.

Hence the automatic dimming of light can be controlled. LM 35 temp sensor sense surrounding temp according to that temperature fan will operated.

Central processing unit is the PIC microcontroller, which gets the input from sensors and according to input produces output signals and give it to the output section. The microcontroller has three inputs, one from IR sensor, one from Temperature sensor and one from LDR.

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The output sections consists of LCD display, Buzzer, and Rely driver circuits which are used to operate different electrical appliances.

Fig. 1 Block diagram of Automated Seminar Hall System

V. POWER SUPPLY

The AC supply is applied to 12V step down transformer. The transformer output is the 12V AC which is rectified using a diode bridge. The output of Diode Bridge of 12V. DC is filtered by capacitors. Actual output to controller is 5v regulated by regulator IC7805.

VI. PICMICROCONTROLLER

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Fig 2 pin diagram of PIC18F4520

VII. LCDDISPLAY

LCD has the ability to display numbers, characters &graphics. The display is interfaced to I/O port of micro-controller (P0.0-P0.7). The display is in multiplexed mode i.e. only one display remains on at a time. Within 1/10th of a second the next display switches on..

Fig.3 LCD Display

VIII. RELAY DRIVER

Relay driver uses to switch ON/OFF output equipment like fan, bulb, curtains etc. It consists of transistor circuit. When controllers PIN where relay gets connected become high relay well be turns ON vice versa relay turns OFF. Relay are simple switches which operate electrically. Relay consists of an electromagnet and also a set of contacts.

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The switching mechanism is carried out with help of the electromagnet. We used a 12 v single pole double throw relay.

Fig. 4. Relay

IX. TEMP SENSOR

In this project we will use LM 35 temp sensor to sense surrounding temp. According to that temp fan will operated. LM35 temperature sensor output voltage is

linearly proportional to the Centigrade (celcius)

temperature. The LM35 is operate over 55° to +150°C industrial temperature range.

It varies 10mv of the output voltage of LM35 for the change of per degree celcius temperature. The speed of the fan can be controlled by the variable voltage drops of LM35. With the increase of output voltage of LM35, the speed of the fan is also increased.

Fig. 5 Temperature sensor

X. LDR

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Fig. 6. Working of LDR

XI. IRSENSOR

Infrared sensor is thermopile. Thermopile detector are voltage generating devices. To detect obstacle during people goes in seminar hall or get out from seminar hall IR obstacle sensor will use. Here one infrared transmitter receiver pair is use.

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Section Headings.

Fig. 7 IR sensor

XII. BUZZER

A buzzer or beeper is an audio signaling device which used for indication purpose. This is used here when count will increases and decreases.

Fig. 8 Buzzer

XIII. ADVANTAGES

1. Does not need any human interaction: As it is fully automated system it does not need any human interaction.

2. Energy efficiency: The system is energy efficient as less power is consumed by the used components like sensors etc.

3. Save wastage of light: It is automatic hence the energy saving takes place.

4. Save time: It saves time of human as system does all the work.

5. More efficient because use of different sensors.

6. Make smart seminar hall.

XIV. APPLICATIONS

1. In home Automation: In home, when the person enters in room, automatically the lights will ON and switch OFF when the person is leaving the room.

2. Hospitals: In ICU units of hospitals, any illegal entry can be restricted by using password based lock.

3. Shopping malls: In many malls like ―Best-Prize‖, only those people can enter who have its membership. This can be also controlled by using automated system by giving specific password to each member.

[image:4.612.56.283.389.578.2]

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5.School/colleges:In classrooms, the system will work when no movement is detected inside the class in given time. After the timeout, all the electrical appliances like fan, tubes etc will automatically OFF.

XV. CONCLUSION

Implementation of our project helps to save electricity in the particular room or Seminar hall by doing sections of that hall. Also our project is use to maintain the statistical analysis of seats in hall. We can save the status of the hall by calculating persons entering in the room or exiting from the room. PIC is an advance controller that we used in our project is having very much better function. After implementing this project, we get a smart and fully automated seminar hall with the advantage of reduced electricity use and less human intervention.

REFERENCES

[1] Gill K., Shuang-Hua Yang, Fang Yao and Xin Lu, ―A zigbee-based home automation system,‖ IEEE Transactions on consumer Electronics, vol. 55,Issue.2, pp. 422–430, May 2009.

[2] Mrityunjaya Patted, Swarada Muley, Debamitra Panda, ―INTELLIGENT CLASSROOM AUTOMATION SYSTEM USING PIC MICROCONTROLLER‖, International Journal of Research in Engineering and Technology, Volume: 05 Issue: 06, Jun-2016.

[3] Anuja Kamble, hruti Kolambekar, Tejashri Rahate, Komal Shinde, Kamble S.B, ―Hall Entrance & Power Management‖, International Journal of Emerging Technology and Advanced Engineering, Volume 6, Issue 4, April 2016.

[4] M.Bharathi, V.Renu, and U.Tamilselvi. ―Remote Controllable and Energy Saving Room Architecture with Security System Based on Zigbee Communication‖, International Journal of Scientific & Engineering Research, ISSN 2229-5518, Vol-4, Issue 5, p315-321, May 2013.

[5] V. Sathya Narayanan, S. Gayathri. ―Design of Wireless Home automation and security system using PIC Microcontroller‖. International Journal of Computer Applications in Engineering Sciences ISSN: 2231-4946 Volume III, p136-140, August 2013. [6] Inderpreet Kaur (Asstt. Prof.) ―Microcontroller Based Home