28-07-2014, 01:05 AM
please give me complete material about this topic so that we make project very easly.
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plc based automatic college bell announcement system
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please give me complete material about this topic so that we make project very easly.
27-06-2016, 03:02 PM
sir/madam i want project guideline about automatic college bell with announcement system
21-07-2016, 12:19 PM
Automatic college bell system
Abstract:
The world over the decades has made considerable advancement in automation; automation is
employed in every sector whether it is home or industry. Here a new and inexpensive design is being
presented. This design finds a tremendous use at primary and secondary school levels as well as in colleges
where the teaching sections can span over eight periods including breaks. The advantage of this design is
that the bell rings at the start of each period without any human intervention to a great degree of accuracy
and hence takes over the manual task of switching on/off the college bell with respect to time. It uses Real
Time Clock (DS1307) which tracks the real time. The scheduled time results are compared with that of a
clock, however, some drift is noticed, which is negligible. The microcontroller AT89S52 is used to control
all the functions, it gets the time through the keypad and stores it in its memory. When this programmed
time equals the real time then the bell is switched on via a relay for a predetermined time. The bell ringing
time can be edited at any time, so that it can be reused again and again at normal class timings as well as at
exam times. Also it can be made password protected so that no unintended person can operate this system
except for the operator. For this a microcontroller has to be programmed using the C language or assembly
language for controlling the circuit.
INTRODUCTION
In today’s life, everyone gives importance to time.
Time does not wait for anybody. Everything
should be performed in time & with accuracy.
Now a day’s school/college bells are operated
manually. Hence there is a big question of
accuracy. Also there is necessity of manpower and
money. Hence here we have presented a system,
which saves our manpower and money & also
give highest accuracy. A bell is a percussion
instrument used in schools and colleges that
indicates the students when it is time to go to the
class in the morning and when it is time to change
classes during the day. No other instrument can do
such a work. So it is an important instrument in
both primary and secondary schools and even in
the industries and other businesses where the bell
timer plays a critical role throughout the day.
Clock towers can be heard over long distance
which was especially important in the time when
clocks were too expensive for widespread use.
And also due to literacy awareness the number of
colleges, schools and institutions are rapidly
increasing. At present bells for periods in schools
are operated manually. After every class, one
employee is engaged into operating the bell.
Automatic college bell helps us to avoid this. This
design takes over the task of ringing the bell in
colleges as the bell would ring automatically at
the schedule time. It has a Real Time Clock
(DS1307) which tracks over
the real time. When this time equals to the bell
ringing time, then the relay for the bell is switched
on.
Relay:
Relay is electro-mechanical device
which is used to isolate one electrical circuit from
another. It allows a low current control circuit to
make or break an electrically isolated high current
circuit path. Total isolation is provided by the
relay between the triggering source applied to the
terminal and the output. This total isolation is a
feature that makes relay different from other
integrated circuits and is also important in many
digital applications. It is a feature that certain
semiconductor switches (e.g. transistors, diodes
and integrated circuits) cannot provide. In this
circuit a 12V magnetic relay is used. In magnetic
relay, insulated copper wire coil is used to
magnetize and attract the plunger .
Conclusion:
Present day ringing the bell in
colleges or schools are carried out manually. The
main disadvantage of this is that one person has to
be alert for this. At the same time during that time
he could not be engage in another task. To
overcome from this, we have decided to prepare
the circuit which will be operated automatically
and the ringing of bell will start by its own time.
The time input can be edited as per requirements.
This circuit is simple to prepare and easy to
install. We can say that it will be much useful for
colleges or schools or other educational
institutions.
Abstract:
The world over the decades has made considerable advancement in automation; automation is
employed in every sector whether it is home or industry. Here a new and inexpensive design is being
presented. This design finds a tremendous use at primary and secondary school levels as well as in colleges
where the teaching sections can span over eight periods including breaks. The advantage of this design is
that the bell rings at the start of each period without any human intervention to a great degree of accuracy
and hence takes over the manual task of switching on/off the college bell with respect to time. It uses Real
Time Clock (DS1307) which tracks the real time. The scheduled time results are compared with that of a
clock, however, some drift is noticed, which is negligible. The microcontroller AT89S52 is used to control
all the functions, it gets the time through the keypad and stores it in its memory. When this programmed
time equals the real time then the bell is switched on via a relay for a predetermined time. The bell ringing
time can be edited at any time, so that it can be reused again and again at normal class timings as well as at
exam times. Also it can be made password protected so that no unintended person can operate this system
except for the operator. For this a microcontroller has to be programmed using the C language or assembly
language for controlling the circuit.
INTRODUCTION
In today’s life, everyone gives importance to time.
Time does not wait for anybody. Everything
should be performed in time & with accuracy.
Now a day’s school/college bells are operated
manually. Hence there is a big question of
accuracy. Also there is necessity of manpower and
money. Hence here we have presented a system,
which saves our manpower and money & also
give highest accuracy. A bell is a percussion
instrument used in schools and colleges that
indicates the students when it is time to go to the
class in the morning and when it is time to change
classes during the day. No other instrument can do
such a work. So it is an important instrument in
both primary and secondary schools and even in
the industries and other businesses where the bell
timer plays a critical role throughout the day.
Clock towers can be heard over long distance
which was especially important in the time when
clocks were too expensive for widespread use.
And also due to literacy awareness the number of
colleges, schools and institutions are rapidly
increasing. At present bells for periods in schools
are operated manually. After every class, one
employee is engaged into operating the bell.
Automatic college bell helps us to avoid this. This
design takes over the task of ringing the bell in
colleges as the bell would ring automatically at
the schedule time. It has a Real Time Clock
(DS1307) which tracks over
the real time. When this time equals to the bell
ringing time, then the relay for the bell is switched
on.
Relay:
Relay is electro-mechanical device
which is used to isolate one electrical circuit from
another. It allows a low current control circuit to
make or break an electrically isolated high current
circuit path. Total isolation is provided by the
relay between the triggering source applied to the
terminal and the output. This total isolation is a
feature that makes relay different from other
integrated circuits and is also important in many
digital applications. It is a feature that certain
semiconductor switches (e.g. transistors, diodes
and integrated circuits) cannot provide. In this
circuit a 12V magnetic relay is used. In magnetic
relay, insulated copper wire coil is used to
magnetize and attract the plunger .
Conclusion:
Present day ringing the bell in
colleges or schools are carried out manually. The
main disadvantage of this is that one person has to
be alert for this. At the same time during that time
he could not be engage in another task. To
overcome from this, we have decided to prepare
the circuit which will be operated automatically
and the ringing of bell will start by its own time.
The time input can be edited as per requirements.
This circuit is simple to prepare and easy to
install. We can say that it will be much useful for
colleges or schools or other educational
institutions.
21-07-2016, 02:05 PM
AUTOMATIC COLLEGE BELL
This Project takes over the task of Ringing of the Bell in Colleges. It replaces the Manual Switching of the Bell in the College. It has an Inbuilt Real Time Clock (DS1307)which tracks over the Real Time. When this time equals to the Bell Ringing time, then the Relay for the Bell is switched on.
The Bell Ringing time can be edited at any Time, so that it can be used at Normal Class Timings as well as Exam Times. The Real Time Clock is displayed on LCD display. The pic Microcontroller is used to control all the Functions, it get the time through the keypad and store it in its Memory. And when the Real time and Bell time get equal then the Bell is switched on for a predetermined time.
Abstract
Embedded Based Automatic College Bell System project is developed for the users to control Bell system in companies or institutions automatically. All the bell timings and durations are predefined and set in the microcontroller.
The user can set the timings using a key pad. A LCD display is used to display the timings. The timings set by the user are stored in the microcontroller.
At the particular time, signal is generated in the microcontroller and sent through the output port. The electronic circuit receives the signal and drives a corresponding relay. The relay is used as a switch to operate the Bell. As soon as the duration is over, the signal is stopped and waiting for the next set time.
This system is mainly used in Schools, Colleges and other companies where Bell system is implemented. There is no need of a person managing the bell timings.
The microcontroller program is written in Assembly Language. The microcontroller used is PIC 16F73
21-07-2016, 02:23 PM
Abstract
The world over the decades has made considerable advancement in automation; automation is employed in every sector whether it is home or industry. Here a new and inexpensive design is being presented. This design finds a tremendous use at primary and secondary school levels as well as in colleges where the teaching sections can span over eight periods including breaks. The advantage of this design is that the bell rings at the start of each period without any human intervention to a great degree of accuracy and hence takes over the manual task of switching on/off the college bell with respect to time. It uses Real Time Clock (DS1307) which tracks the real time. The scheduled time results are compared with that of a clock, however, some drift is noticed, which is negligible. The microcontroller AT89S52 is used to control all the functions, it gets the time through the keypad and stores it in its memory. When this programmed time equals the real time then the bell is switched on via a relay for a predetermined time. The bell ringing time can be edited at any time, so that it can be reused again and again at normal class timings as well as at exam times. Also it can be made password protected so that no unintended person can operate this system except for the operator. For this a microcontroller has to be programmed using the C language or assembly language for controlling the circuit.
The world over the decades has made considerable advancement in automation; automation is employed in every sector whether it is home or industry. Here a new and inexpensive design is being presented. This design finds a tremendous use at primary and secondary school levels as well as in colleges where the teaching sections can span over eight periods including breaks. The advantage of this design is that the bell rings at the start of each period without any human intervention to a great degree of accuracy and hence takes over the manual task of switching on/off the college bell with respect to time. It uses Real Time Clock (DS1307) which tracks the real time. The scheduled time results are compared with that of a clock, however, some drift is noticed, which is negligible. The microcontroller AT89S52 is used to control all the functions, it gets the time through the keypad and stores it in its memory. When this programmed time equals the real time then the bell is switched on via a relay for a predetermined time. The bell ringing time can be edited at any time, so that it can be reused again and again at normal class timings as well as at exam times. Also it can be made password protected so that no unintended person can operate this system except for the operator. For this a microcontroller has to be programmed using the C language or assembly language for controlling the circuit.
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