Gate Alarm
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• Mini project Done by
• Ajai S • Arun Krishnan • Geethu S Nair • Indu S
This
project serves as a detecting mechanism to indicate the presence of an object or person in undetected cases.
This
system uses an IR transmitter sensor unit to identify the arrival of a person
It
makes a beep sound using a buzzer.
This
is basically a detecting mechanism project.
This system switches on the gate light when surrounding light is low.
It
helps a lot in saving electricity.
This
circuit has two stages.
Transmitting
unit and receiving unit .
Transmitting
unit consists of IR LED
Receiving
unit consists of TSOP sensor.
555 TIMER
An
IC 555 working in monostable mode gives the time delay.
IC
555 is a highly stable controller capable of producing accurate timing pulses.
It
can operate with a supply voltage in the range of 4.5 to 18V.
It
is a pulse generating circuit.
The
duration of this pulse is determined by the RC network connected externally to the 555 timer.
In
a stable state, the output of the circuit is approximately zero or a logiclow level.
When
external trigger pulse is applied output is forced to go high (» VCC)
At
the end of the timing interval, the output automatically drawn back to its low stable state.
It
is a two stage switching circuit.
This
free running multivibrator generates square wave without any external triggering pulse.
It
switches back and forth from one state to another.
It
remains in each state for a time depending upon the discharging of the capacitive circuit
TSOP
The
TSOP17 Series are receivers for infrared remote control systems.
The
three pin terminals of the TSOP are GND, VCC and OUTPUT.
A
bandpassfilter and an integrator stage are used to suppress unexpected output pulses.
LDR
An Its
LDR is a variable resistor.
value decreases with increasing incident light intensity.
It
can have a wide range of resistance.
In
bright light resistance is less than 100Ω & in darkness its excess of 10 MΩ.
The
cells are capable of reacting to a broad range of frequencies, including infrared (IR), visible light, and ultraviolet (UV).
RELAY
A
relay is an electrically operated switch.
It
can be used to electrically isolate different parts of a circuit
When
electricity flows through a coil, it becomes an electromagnet.
Relays
allow one circuit to switch a second circuit which can be completely separate from the first.
The
switch's motion (ON and OFF) is controlled by the current flowing to the coil, or not.
CIRCUIT DIAGRAM
SUGGESTIONS FOR IMPROVEMENT
• Home and business owners can now choose a new type of keypad control panel designed to help reduce false alarms. • Newer model alarms have technology to measure the size/weight of the object causing the disturbance so we are able to decide how serious the threat is. • When we use high intensity alarms it turns out to be a domestic as well as security purpose project.
CONCLUSION
• The project provides the detecting mechanism of objects or person at unexpected timings. • It has the advantage of saving of electricity since the bulb glows in the dark only for a short interval of time.
• Another main advantage is the height adjusting mechanism which we could implement.
ADVANTAGES •High sensitivity •Low cost •Simple construction •Easy to install and maintain •Less power consuming •Requires less space •Reliable
• Ajai S • Arun Krishnan • Geethu S Nair • Indu S
This
project serves as a detecting mechanism to indicate the presence of an object or person in undetected cases.
This
system uses an IR transmitter sensor unit to identify the arrival of a person
It
makes a beep sound using a buzzer.
This
is basically a detecting mechanism project.
This system switches on the gate light when surrounding light is low.
It
helps a lot in saving electricity.
This
circuit has two stages.
Transmitting
unit and receiving unit .
Transmitting
unit consists of IR LED
Receiving
unit consists of TSOP sensor.
555 TIMER
An
IC 555 working in monostable mode gives the time delay.
IC
555 is a highly stable controller capable of producing accurate timing pulses.
It
can operate with a supply voltage in the range of 4.5 to 18V.
It
is a pulse generating circuit.
The
duration of this pulse is determined by the RC network connected externally to the 555 timer.
In
a stable state, the output of the circuit is approximately zero or a logiclow level.
When
external trigger pulse is applied output is forced to go high (» VCC)
At
the end of the timing interval, the output automatically drawn back to its low stable state.
It
is a two stage switching circuit.
This
free running multivibrator generates square wave without any external triggering pulse.
It
switches back and forth from one state to another.
It
remains in each state for a time depending upon the discharging of the capacitive circuit
TSOP
The
TSOP17 Series are receivers for infrared remote control systems.
The
three pin terminals of the TSOP are GND, VCC and OUTPUT.
A
bandpassfilter and an integrator stage are used to suppress unexpected output pulses.
LDR
An Its
LDR is a variable resistor.
value decreases with increasing incident light intensity.
It
can have a wide range of resistance.
In
bright light resistance is less than 100Ω & in darkness its excess of 10 MΩ.
The
cells are capable of reacting to a broad range of frequencies, including infrared (IR), visible light, and ultraviolet (UV).
RELAY
A
relay is an electrically operated switch.
It
can be used to electrically isolate different parts of a circuit
When
electricity flows through a coil, it becomes an electromagnet.
Relays
allow one circuit to switch a second circuit which can be completely separate from the first.
The
switch's motion (ON and OFF) is controlled by the current flowing to the coil, or not.
CIRCUIT DIAGRAM
SUGGESTIONS FOR IMPROVEMENT
• Home and business owners can now choose a new type of keypad control panel designed to help reduce false alarms. • Newer model alarms have technology to measure the size/weight of the object causing the disturbance so we are able to decide how serious the threat is. • When we use high intensity alarms it turns out to be a domestic as well as security purpose project.
CONCLUSION
• The project provides the detecting mechanism of objects or person at unexpected timings. • It has the advantage of saving of electricity since the bulb glows in the dark only for a short interval of time.
• Another main advantage is the height adjusting mechanism which we could implement.
ADVANTAGES •High sensitivity •Low cost •Simple construction •Easy to install and maintain •Less power consuming •Requires less space •Reliable
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