June 22, 2008
June 22, 2008
June 25, 2008
13.758.1 - 13.758.12
Integrated Vehicle Security Alarm with Wireless Telephone Network Abstract
This paper describes the design, features, assembly, and functionality of a wireless integration of a standard electronic vehicle security alarm with the telephone network. Generally, car alarms are usually most effective when the system’s warnings are audible or visible to the owner of driver. When the security of the vehicle is breached, time plays a major factor for an immediate and appropriate response to the warning. Due to the dynamics of daily life, it is not unusual for vehicle operators to be away and out of audio and/or visible range. In this system, a trigger circuit is connected to the vehicle alarm. When activated by the car alarm, it will wirelessly alert the owner’s cellular phone, and upon a response to the alert, he/she will be able to listen to the audible information being transmitted from the car. In this endeavor, the objective was to develop a simpler and more cost-efficient product than those currently available, by utilizing a timer module. All aspects of the car alarm system were simulated, modified, and subsequently prototyped by students utilizing their knowledge acquired in an electronics engineering technology program as a senior-level control systems course project, and resulted in an efficient, cost-effective, and possibly marketable product. It is anticipated that this design concept will contribute toward better security for vehicles or any other appropriate applications.
According to Popular Mechanics, the early vehicle alarm system was composed of a horn or bell, which used the drive-shaft to operate it when the car was improperly moved1. The horn or bell projected a loud noise that eventually would scare off the thief. Consequently, people began purchasing these systems for the sake of securing their vehicle.
A similar concept continues to be utilized today, even in simple car alarm systems that employ unsophisticated technology that closes the circuit, which in turn, signals the siren to sound off as soon as the car is tampered with2. Recent technological advancement has made possible the development of more complex systems that generally consist of the following:
♦ a computer control unit used to monitor the complete process and eventually sound the alarm (the brain of the system); ♦ an array of sensors that includes switches, pressure sensors, and motion detectors; ♦ a siren, which can be set to different sounds; ♦ a radio receiver used to control the alarm from a wireless key fob; ♦ an auxiliary battery to operate the alarm even if the main battery is disconnected.
The computer control unit’s function is to activate the switches triggered by the power-sensing devices that energize the alarm mechanisms, such as the siren, horn, and/or the headlights.
Further, an alarm system may include sensors such as: an immobilizer, vibration, internal pressure changes (inside vehicle), shock (in event of impact or movement of car), engine and/or steering wheel locking, and fuel pump shut-off, etc.3
Saneifard, R., & Oluoch, C., & Guerrero, J. (2008, June), Integrated Vehicle Security Alarm With Wireless Telephone Network Paper presented at 2008 Annual Conference & Exposition, Pittsburgh, Pennsylvania. https://peer.asee.org/3241
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