The first case of car theft was recorded in 1896, a decade after gas-powered cars were introduced. Studies have claimed that nowadays a car gets broken into every 20 seconds in the United States alone. Therefore, to reduce this increasing crime, and to keep our cars protected, today almost every car is equipped with the most sophisticated security systems.
Today's modern cars are equipped with alarm systems that are more advanced and developed. They comprise:
- A layout of sensors which include switches, pressure sensors, and motion detectors. Sensors are basically devices that receive and respond to a stimulus.
- A siren to generate a variety of sounds so that you can choose a distinct sound for your car.
- An auxiliary battery that can be used as a replacement if the original battery doesn't work or is not charged.
- A computer-controlled system to monitor and control all these operations of the system.
Most alarm systems employ a switching mechanism built within the car. As soon as the thief opens the door, the car door transfers the electricity to the interior lights and alarms the thief.
So, if the car receives a shock and experiences an unidentified change in its velocity, a full scale warning alarm beeps. In some cases, the sensor is also connected to the fuel engine which stops supplying fuel, if a drastic change in the intensity of motion is detected.
Window and Pressure Sensors
These sensors are very effective in detecting broken windows. They are connected to a microphone which is attached to the computer-controlled system.
When the thief breaks the windows of a car, the sensor detects the sound and air pressure of the car. The microphone monitors the air pressure and air fluctuations, converts them into electric signals, and sends to the system. This way it triggers the siren and alarms the thief.
Motion and Tilt Sensors
These are extremely helpful when the thief tries to tow or drag the car to some other place. The sensor consists of perimeter scanners that tab any tilt, lifting, and even slight movement of the car.
Like this, one can easily monitor all the activities happening within a predetermined perimeter of the parking lot. Therefore, if any motion is scanned, the radio transmitter transmits signals which are reflected by the receiver monitors.
Tilt sensor consists of a series of mercury switches formed by two electrical wires and a ball of mercury. These switches generate electricity and in case of any car tilt or lifting, the electrical wires change the flow of circulation and alert the thief.
In fact, nowadays many car security systems play recorded messages when somebody steps too close to the car.