01-10-2014, 03:03 PM
ACCIDENT PREVENTION TECHNIQUE USING BLUETOOTH
ACCIDENT PREVENTION.doc (Size: 568.5 KB / Downloads: 9)
Abstract
In the current scenario, the world is plagued by accidents which are primarily due to human errors in judgment and hence thousands of lives are lost. These accidents can be avoided if only if there was a mechanism to alert the drivers of approaching danger. This can be done by monitoring the distance between nearby cars and alerting the driver whenever the distance becomes too short. This is prime aim of our paper. In this paper, we propose the use of Bluetooth Technology by which we can check the speed of the car whenever it comes dangerously close to any other vehicle up front, thereby saving many lives.
INTRODUCTION
As India sees a sharp rise in sale of personal vehicles, it is witness to another unfortunate rise, in number of deaths in road mishaps — around 1,05,000 every year, reports World Health Organisation in its report on “Decade of Action for Road Safety 2011-2020” . By using Bluetooth technology this number can be decreased. Bluetooth is a short-range radio link intended to replace the cable(s) connecting portable and/or fixed electronic devices. Key features are robustness, low complexity, low power and low cost. At a given point of time, Bluetooth devices can communicate with eight other similar devices. Thus 8 cars having Bluetooth enabled can communicate with each other within a distance of 100 meters. The range is dependent on the power class of the product.
Power transmission rates vary in many Bluetooth devices depending upon the power saving features available in a particular unit, bandwidth requirements, transmission distance. We can use this feature of Bluetooth to avoid accidents, as any car comes closer to another than the specified distance, the driver will be alarmed about the same and the speed of the car will be decreased only if the speed of the car or any other in the radius of 10 m is more than 40 km ph. If the speed is less, then the driver will only be indicated about the nearby cars
BLUETOOTH
Bluetooth devices are capable of communicating with eight other devices simultaneously. We can monitor and check the speeds of eight neighbouring cars simultaneously, thus preventing accidents. Thus if we have two Bluetooth enabled devices in two cars, the devices automatically communicate with each other when they come in the range of up to 100 meters. The range is dependent on the power class of the product. Power transmission rates vary in many Bluetooth devices depending upon the power saving features available in a particular unit, bandwidth requirements, transmission distance. The statistics of road accidents is tremendous and highlights the need for such a system
BLUETOOTH TECHNOLOGY OVER RADAR SENSORS
Radar can take up to 2 seconds to lock on. Radar has wide beam spread (50 ft diameter over 200 ft. range). Cannot track if deceleration is greater than one mph/sec. Large targets close to radar can saturate receiver. Hand -held modulation can falsify readings. It needs more interference sources.
BLUETOOTH OVER GLOBAL POSITIONING SYSTEM
Price of a GPS system can be a major disadvantage. If you purchase a "bargain GPS," you will get what you pay for, and features such as traffic and up-to-date maps could be lacking. GPS devices are limited by having clear access to the satellites that provide the tracking. In locations with tall buildings or sparse coverage, reception can be poor. Turn-by-turn directions are not available on every type of GPS device. Some devices will give very little advanced notice before an upcoming turn. Maps on GPS devices are not updated in real time for all models. This means that it is possible thata GPS device will direct you onto a road that is closed or no longer exists. It could also miss new roads and businesses.GPS units that are not plugged into a power source, and rely on batteries, which can drain quickly.This can increase the cost of owning a GPS unit significantly.
OPERATION
The Bluetooth radio is a short distance, low power radio operating in the unlicensed spectrum of 2.4 GHz and using a nominal antenna power of 20 dB. The modulation used inRadio frequency identification is a technique used in tracking and identification of obstacles using radio waves. It consists of readers & tags. Most of the RFID tags contain: Integrated circuit for storing & processing the information and modulates and demodulates the signal
CHALLENGES
A set of challenges in developing the network and information infrastructure is discussed in this chapter. First and foremost, dealing with an environment is very dynamic and composed of high-motion vehicles. This results in rapidly changing network topologies. In addition, data exchanged between the vehicles is extremely time sensitive. The number of nodes involved is much larger than any system that has been proposed to date (e.g., sensor environments). On the other hand, since the communication devices are mounted in vehicles, the power supply is unlimited. This makes it possible to use fairly large antennas and on-board GPS devices. Also, data is only of interest to a small set of neighboring vehicles.
CONCLUSION
The Bluetooth technology is being widely adopted by the Industry leaders. The possibility for new applications is very exciting with this versatile technology. It provides a simple logical answer to the entire problem, which built a single common radio into every mobile computer. Then companies have to worry about neither WAN nor building external cables. The Bluetooth communication device will thus be a small, low powered radio in a chip that will talk to other Bluetooth enabled products. Bluetooth has been designed to solve a number of connectivity problems experienced by the mobile workers & consumers. Thus, this technology is user friendly and helps address various other problems like accidents.