PROJECT ELECTRONIC RESEARCH
CHAPTER I. GENERAL
1.1 Title: ELECTRONIC ANTI-THEFT. 1.2 The responsible authority
OF PROJECT: MACAHUACHI BARBOZA, ESTELA.
1.3 ADVISORY: ABDEL ROJAS. 1.4
INSTITUTION: ISTP JOSE PARDO "
1.5 KEY PROJECT: SINGLE ALARM
WELFARE CHAPTER II THE APPROACH TO THE STUDY
2.1 STUDY APPROACH
at all four sites are constantly increasing thefts departments , temporary or occasional empty, with more intensity in large cities than in small towns. Today
takes place at any time of year and not just during the holiday exodus.
The number of such thefts is very high, and for that cause most cases it is vain hope of identifying and recovering the stolen responsibilities. This type of crime, along with auto theft, ranked first in the classification of crimes unpunished
2.2 HYPOTHESIS
thefts mostly occur by showdown, economic failure or simply are committed by persons of evil life. To counter these crimes
It follows a theft protection system
2.3 RESEARCH OBJECTIVES
In assembling this project, we get a light or sound alarm with two types of circuits: an open circuit and closed circuit.
2.4 Assessment of the Problem
actually shows that this type of justivas insights not only takes place in major towns but also in popular departments in the groups of houses on the periphery of urban centers.
How to reply to the question of how to be able to defend this action and ignoring constant vigilance, little more than impossible, it is the action of signing an insurance policy, although there maybe loss of sentimental property without compensation as possible.
seems that the solution best is to prevent the perpetrators of such crimes to enter the house or, if they do, put them to flight immediately. This can be achieved using an electronic alarm. The device presented here is a valid tool for both home defense, as the car.
The use of this device requires that the installation be performed in the most timely and offer the widest guarantees of safety. Construction and installation does not have the slightest difficulty, but especially in regard to the installation must follow a very precise criteria on which are the key points necessary to prevent the attacker can isolate and neutralize the device. The device is extremely easy to operate, since its commissioning was done by means of a switch.
2.5 RATIONALE AND IMPORTANCE OF THE PROBLEM
to establish the electrical short circuit operation of the alarm, you can use a micro pressure or any other contact system is operated to open the door or window to be protected. Use of this system is very simple and requires no special care
Thanks to this simple alarm, be comfortable leaving, for example, house or anything else that is under our care.
This new alarm can be installed across a corner and you can form a security between neighbors because when the alarm sounds the neighbors will be watching and ready to act.
CHAPTER III METHODOLOGY
The main component of this circuit is an SCR (silicon controlled rectifier), which acts as security or electronic switch. Initially, the SCR does not conduct and the LED does not light.
control circuit alarm consists of two types of switches, one closed and one normally open. When the switch S1 is closed, current flows through R1, to the gate of SCR. The same happens when the switch S2 opens, current flows through R2 and D1.
In either case, a positive voltage appears on the gate of SCR and this leads anode and cathode lighting LED.
Then we say that the alarm is activated.
As the SCR is closed but the voltage is removed from the gate, the alarm will stay on regardless of the position of the switches.
can be connected to the auxiliary output, a buzzer of 6 or 9 volts or a relay that can handle a high volume siren.
This circuit can also be powered with a car battery of 12 volts and can take account of not overloading the SCR with a current higher than its capacity.
The switches most commonly used sensors are magnetic. These consist of two parts: a small magnet that attaches to the door or window of a moving part, and a fixed part that has a switch that activates when approaching the magnet.
In this normal state, with the door or window closed, the switches are closed to be the magnet around, when you open the door or window is opened and the switch activates the alarm.
CHAPTER IV.
administrative aspects. 4.1 Material
• 1 ceramic capacitor of 0.1 uf.
• 1 red LED.
¨ C106B SCR.
• 1 common 1N4003 diode
33kW resistors • 2 • 1
resistance of 220 W.
• 1 printed circuit.
Connector • 1 9 volt battery .. 4.2 Budget
OR COST OF PROJECT
As mentioned, This alarm was simple and cheap addition, the cost of all materials is about S/8.00 approximately soles. CHAPTER V.
REFERENCES
• Project complete electronic
KIT .- "Basic course in applied electronics"
· Electronics modern applied 4
Sybil P. Parker
Editor in chref.
Third Circuit Integrated Technical issues
REDE, paragraph 35400-Barcelona.
CHAPTER VI ANNEXES
6.1 Definition of Terms
INTEGRATED CIRCUITS: With the initials IC (integrated circuit) is known universally a piece of silicon as thin as a sheet of paper and so small that it can be said to be inside any of the letters "o". Although they look so small, the IC is, in fact, the bridge that has permitted beyond the limits of the micro-electronics, which is the science and technology for building electronic circuits as small as possible. Its construction requires the ongoing collaboration of highly specialized electronic engineering, physics, chemistry, crystallography and microphotography.
At first glance, all integrated look identical. In fact, the manufacturing method is the same in all cases and the differences between the two types look really minimal. It takes the same technique and the same time to produce 10 thousand or a single IC, whether it is as relay amplifiers, oscillators or electronic conmutaciores. It does not matter which is intended to run at incredible speeds within electronic computers, to stabilizing current or voltage, to encode or decode, a color TV or if they exceed the most stringent heat or cold more intense and a trip to the moon.
SCR (Silicon Controlled Rectifier) \u200b\u200bis an electronic switch that closes when a positive voltage applied to its gate or "Gate."
An SCR is a diode, but with a difference. As a diode is the cathode and anode, and passes current in one direction, also has an additional terminal called the gate or "Gate." The gate is used to push or trigger the SCR conduction state. Only when the gate receives a positive voltage, drives the SCR.
Then, although the suspension that voltage, the SCR continues to conduct.
The only way to stop driving, is to remove or change the voltage polarity is positive at the anode.
RESISTANCE. O resistors: Basically, the resistors used to limit or control the current in the circuits.
components are most commonly found in electronic devices such as radios, televisions, amplifiers and are the lowest cost. CONDENSER
or capacitors: It consists of two plates separated kill them with an insulating material called "dielectric."
The main function of the capacitors store electrical energy is temporarily em.
rectifier diodes, components are made of semiconductor material and has two elements called the anode and cathode.
The main function is to allow the passage of current in one direction and for this reason its main use is to convert current alternating current. BATTERIES
or batteries: components are widely used today, as modern electronic circuits consume little power and therefore can be fed to them. The purpose of a battery is supplying electrical power to operate the electronic circuits.
LED (light emitting diode): An LED or light emitting diode is a special type of diode that produces light when current is flowing through it.
is important to remember that the LED, as all the diode, have polarity. The cathode is generally indicated by a flat edge or a terminal shorter than the other.
0 comments:
Post a Comment